Yes, the BMW B48 engine is very reliable compared to similar BMW engines. Other features shared with the N20 include a twin-scroll turbocharger, direct injection, variable valve lift (Valvetronic) and variable valve timing (Double VANOS). No, completely different design. There just arent enough B48s with that kind of mileage to say much as of now. These small 2.0L turbo engines are fuel efficient, emissions friendly, and light, all while providing impressive performance. At least when you compare the B48 and B58 reliability to that of the earlier N54, N55, N63, S65, etc. A longer stroke helps the B48 make a lot of low-end and mid-range torque. Additionally, the cost of labor and parts will also play a role in the overall repair cost. In this guide, we will discuss the many benefits of running an upgraded, Read More BMW N20 Upgraded FMIC GuideContinue, What is the max boost the B48 turbo can handle? The redesigned, third-generation X3 picks up and improves upon where the previous version left off, keeping its title as one of the best-driving compact SUVs. This is usually associated with a difficult-to-spot coolant leak. Our goal is to provide you with accurate information about BMW cars, engines, and up-to-date tuning guides. Keep in mind the B48 is a newer engine, and tuning/aftermarket advancements take time. Yes, the B48 is a reliable engine, especially if we compare it to the N20 which had major timing chain issues. Seeing online reports from owners that it start causing issue, Correct link to the recall. Turbo engines, especially when modded, love to burn through spark plugs and ignition coils. Especially tuned and modded N20 or B48 engines. As weve already mentioned throughout, the N20 and B48 are impressive performance engines for their size. B46s meet SULEV emissions standards and are the primary engines in the US market. At least when you compare the B48 and B58 reliability to that of the earlier N54, N55, N63, S65, etc. The NGK 97506 spark plugs are OE for the older N20 engine. So far, the B48 appears the more reliable engine. Cranks are forged steel. It seems to be a slight improvement over the preceding N52 engine. The standard oil weight is 0W-20. B48 engines range from 181 to 302 horsepower in stock form. Thats it. (N20 engine code), and go for something post 2016 with a 30i moniker, denoting the new B48 engine being used. Its like comparing an infiniti q60 non-redsport to a Q60 redsport variantthe non redsport (cheaper model with 100 less hp) will gain over 100 whp from a tune alone, where the redsport gains 30-50 whp at best. It also helps prevent corrosion. Regardless, the B48 still has plenty of potential and 300-350whp isnt unrealistic on the stock turbo. do you think that is true and why is that? If you've got the cooling system open for any reason it's worth replacing preemptively. Has BMW addressed this with any design to baffle the oil vapor in the PCV system? pretty cost prohibitive though. The bm3 tune from Pro Tuning Freaks uses a mobile app and web interface for simple flash tuning. No we dont agree with the lifetime coolant designation. B48 BMS Dyno: 230.68 hp, BM3 on N20 . Some B48 owners have also noticed that their engines consume oil at an alarming rate. Engine limits are always a tough topic. The most important aspect is sticking with a quality, trusted tune. Read our post about N20 reliability here: Common BMW N20 Problems. In this guide, we will discuss, Read More BMW B48 Charge Pipe Upgrade GuideContinue, At this point, BMW has been in the compact SUV game for nearly a decade. However, compression also increases on the B48 which isnt the greatest for strength on boosted engines. Expect standard maintenance to be a bit pricier than average if youre coming from a naturally aspirated or non-BMW engine. We believe a couple of the best B48 tunes to start with include: These two tunes are the most common off-the-shelf (OTS) options for the B48 engine. There is still a lot of time, development, and testing N55 | B48 | B58 | N20 3. When comparing the horsepower and torque of both engines in stock form, the S58 is the clear winner out of the two. BMW reliability seems to be trending in the right direction, though. B48/46 is not basically the same engine. I live in the Bay Area, CA. Some claim it's reliable by "BMW standards" but we believe the B58 delivers good reliability by any standard. BMW is long known for their ability to build beautiful inline 6 engines. Necessary cookies are absolutely essential for the website to function properly. Stage 2 E30 octane: 25%HP / 27%TQ, BM3 on B48 Do your thorough research and weigh the potential pros and cons before making a decision, if you are still trying to decide on engines. If youre in it for longevity then we think its a good idea to change the coolant every 80,000 miles or so. These engines perform great and have very good fuel economy. Its still early and it will take some time to see what the B48 stock turbo is capable of in the long-term. The cookie is set by the GDPR Cookie Consent plugin and is used to store whether or not user has consented to the use of cookies. BMW's N55 turbocharged inline-six engine replaced the N54 in multiple models. BMW M20 Engine. By clicking Accept, you consent to the use of ALL the cookies. Weve seen dynos showing nearly 400whp. BMW recommends running LL-14 or LL-17 oils on the BMW B48 engine. Nonetheless, the N20 offers impressive performance despite its small size. This mostly applies to N20s produced prior to 2015. You could do a full big turbo stock block b58 build in a day on stands with a floor jack. Turbo engines love to burn through spark plugs. Theyre valid questions, however there is no perfect answer. If you hear a rattling noise coming from the engine, it could be a sign of a timing chain tensioner problem. ( 5000 8000 miles ) definitly on a tuned B48. Just past 55k miles on it. Yes, we believe the BMW B48 is a pretty reliable engine. A catless downpipe on the B48 will offer about 15-25whp gains. Out of these, the cookies that are categorized as necessary are stored on your browser as they are essential for the working of basic functionalities of the website. It also offers 20% more boost pressure and an increased compression ratio of 11.0:1. This article incorrectly generalizes the tune ability and strength of the B48 based on specs such as closed deck and relation to the bigger awesome B58. Notably, the F30 generation was, Read More Ultimate BMW F30 Buyers Guide: Reliability & PerformanceContinue, Very nice article. Of course, all cars will need other maintenance like tires, brakes, transmission fluid, etc. Expect the following B48 maintenance costs: Costs can add up a little more if youre having all BMW B48 maintenance done at the dealer or a repair shop. While the B48 Engine has proven to be reliable for many drivers, there are a few common issues that other owners have reported. The BMW B46 and B48 are basically the same engine. Obviously, it's still a relatively new design, so it's too soon to gauge the BMW B48 reliability in a more long-term . Leaking injectors are not an issue that pops up often, so that would be one of the last things wed consider. Rough idle can be a frequent issue on many engines. Stage 1 E30 octane: 21%HP / 24%TQ Otherwise, scroll down and check out some more awesome B48 content. Like its better in every single way outside of price. Definitely a sound improvement for the B48. Newer LL-14+ oils are designed with fuel economy and emissions in mind. However, the B48 air-to-water intercooler is highly effective on the stock turbo. The S58 engine, which was released in early 2019, is the high performance version of the B58. Advertisement cookies are used to provide visitors with relevant ads and marketing campaigns. Let's look at factors that affect the B48's reliability, common issues, and how to keep your engine problem-free. If you do long highway drives often then you can get away with the higher 8,000 or even 10,000 mile OCI. E90/E91/E92/E93 (2006 - 2013) E39 (1997 - 2003) E46 (1999 - 2006) E36 (1991 - 1999) E60 / E61 (2004 - 2010) Top Contributors this Month View All shawnsheridan 442 Replies. What is the difference between N47 and B47 engine? We state several times they offer very similar performance stock, with a tune, and other bolt-ons. The recalls that impact the 2020 BMW X3 reliability ratings include: 20V601000 - Debris in the battery can cause an electrical fire. Check engine light stuff has been minor and is often just software. 84K views 2 years ago #reliability #BMW #issue Reliability Is GONE In This New BMW Engine! BMW B48 Engine Specs and Reliability. Ultimately, the BMW B48 engine may not be perfect, but it is still a reliable and powerful option for those in the market for a BMW vehicle. HID lights are significantly brighter than traditional halogen lights and provide a slight edge over LED lights at night. This issue is caused by an incorrectly assembled asbestos-free gasket. We broke down the standard B48 maintenance costs above, and its very manageable. If left unchecked, the engine could run low on coolant. Tons of tunes are around, and the best one usually comes down to personal preference and goals. Check the website again, they finally corrected the values. The only thing they have in common is that they are both 2L turbos. Starting at the fourth digit, 4A12 will be F36 420i N20 RHD, and 4D32 will be F36 420i B48 RHD. You hear it on a cold start and then when it reaches normal temperature. I need to get a walnut blast, ignition coil and spark plug changed. If youre over 100,000 miles on your B48-powered BMW, a walnut blast is recommended. They power 20i, 25i, 28i, and 30i models; a large percentage of all BMW models. Im hearing a electronic beep when I start up my b48 430i. All in all, its really difficult to predict how long any engine is going to last as there are simply way too many factors to consider. Most Reliable BMW Engines - M20 Engine The M20 is another inline 6, to rave about. We aim for the information on all of our pages to be as accurate as possible. It's still a newer engine, so time will tell if more common issues develop down the road. Its truly an excellent engine for its size. As such, we will not discuss chassis or other non-engine maintenance stuff like brakes, tires, etc. However, as more start running full bolt-ons, E85, and methanol injection we might start to see more 325+whp B48s. Im putting one in one the left behind the bumper under the headlight. Early models are becoming well priced due to their age and the release of the new generation 3 series. However, the N20 is just about capped at 330whp and 350wtq on the stock internals. We recommend switching to these spark plugs if youre pushing the limit of the B48 turbo or upgrade the turbo. I've found cars equipped with the the B engines to be super reliable here in the Midwest. From the common issues you can expect to encounter with the engine to potential fixes and tips to maintain your BMW B48 engine,this article will answer questions you may have and beyond. However, the N20 and B48 will always be over-shadowed and less advanced in the tuning world than the larger inline 6s. The cookie is used to store the user consent for the cookies in the category "Other. It was shown off in May 2019. Theres no right answer, but in general the B58 should last as long as youre willing to continue repairs and standard maintenance. 3. Some of it simply comes down to the luck of the draw, maintenance, etc. Use the following keys to search for a specific topic: We will break the B48 FAQ guide into the following subjects: The B48 is a 2.0L single turbo engine that is part of the BMW B series modular engines. Its also not overly expensive, especially for those willing to DIY some maintenance. "Passenger restraint system malfunction" BMW X3 Whats This? If it fails, the engine might run poorly or even stall. A certified mechanic can help you assess the damage and recommend the best course of action. We review the N55's performance and reliability. I will dyno it before mapping as it feels more like 200 bhp but I've been quoted 260 on the remap. 4. ~300-350whp. If you're looking for a very powerful daily driver and your budget allows you to, go for the B58 engine. Explore Our Forums. ago. However, dont let engines like the N54, N55, or B58 fool you. However, upgraded intercoolers are excellent on tuned and modded N20 engines. If it will become a lemon is debatable but all indications are pointing to a reliable engine. Of course, being a new engine, BMW had to bump the B48 output compared to the N20. Those who often use the B48s power and boost will land on the shorter-end. Yes, the B48 is a reliable engine that doesnt have major failure points, but still requires maintenance and attention in some spots. Ive only covered 30k and its a 2017 model. Peak power comes in at 248-255hp on 30i models. These shells help clean off carbon deposits without damaging the valves or ports. However, this likely comes down to many being under warranty with few modded. Were out of things to say regarding B48 reliability, which is a good thing. BMWs B48 engine is also the successor to the 2.0L turbo N20 engine. Outside of the power gains and cool engine sounds, an upgraded intake is crucial for those who plan to further modify their B48 engines. Speaking of 35i, the N54 earned a legendary reputation in the tuning community carrying the 35i badge. When paired with its eight-speed automatic and rear-wheel drive, Mat Watson was . Stage 1 93 octane: 18%HP / 22%TQ On older BMW DI engines, such as the N54 and N55, carbon build-up was a bigger issue. When you purchase through links on our site, we may earn an affiliate commission, which supports our community. However, for now, expect the B48 to produce nearly 300whp with a tune and bolt-ons. How much HP can a B48 handle? Turbo + pump + intake + downpipe + plugs and youre making big power. You can say we are somewhat N54 fanatics. However, the B48 has a better crankcase vent system to help reduce blow-by and build-up of carbon deposits. We use cookies on our website to give you the most relevant experience by remembering your preferences and repeat visits. Our garage currently includes a 2008 135i, 2007 335i, and 2008 535i. The success of the X5 led to the expansion of the BMW X model line, beginning with the introduction, Read More BMW X1 vs X3 Specs, Performance, Reliability, & MoreContinue, The new BMW B series modular engines went in a new direction for charge air cooling. Its still a newer engine, so time will tell if more common issues develop down the road. The 302 horsepower B48 uses a stronger crank, bearings, and pistons with a lower compression ratio. Another representative of the modular family, the BMW B48 engine comes in the shape of a more compact four-banger. Yes, it's expensive to maintain a 3-Series BMW once it's outside of the factory or CPO warranty. bimmerfest.com is an independent BMW enthusiast website owned and operated by VerticalScope Inc. Do NOT follow this link or you will be banned from the site! Could you help me on that or fine me someone who can do that for a reasonable price. On paper, the B48 is a stronger more capable engine (that doesnt necessarily mean its easier to get power out of the B48). That's about it. Again, the same concepts apply with the HP discussion above. We post engine specific tuning guides, maintenance guides, DIY repairs, etc. Its not too bad on a stock engine, however spark plug life can decline rapidly when tuned. A faulty ignition coil or a clogged fuel filter can cause this issue. BMW reliability seems to be trending in the right direction, though. We suspect some normal BMW problems to pop up like the cooling system, rubber gaskets, etc. That said, we're likely writing this article too soon. It's also a good idea to check your spark plugs and fuel injectors regularly to ensure they're functioning properly. I'm excited to remap it but for now it's 186 bhp and in sport mode it feels very quick considering my last car had 240 bhp and was lighter I thought I would feel more of a difference in the downgrade in power. Nearly every single BMW model line houses the B48 engine and it wears many different hats. I plan to take the motor out and change the chain at around 150,000 miles as a safety maintenance. *Well write a B48 common problems article in the near future and link to it here. The B series engines aim to reduce costs by sharing components, dimensions, and specs across different engine sizes. However, if the damage is severe, it may need to be replaced. We know the older 2.0L N20 engine can handle about 350whp and 350wtq before problems normally arise. The B48 is without any serious common problems to date. Expect both the N20 and B48 to be reliable engines. . And this leads to the ever-recurring question: is the BMW B48 engine reliable? Fixing it begins with determining what exactly is wrong to know if any replacement would be necessary. That said, were likely writing this article too soon. Water actually offers better cooling benefits than actual coolant. A lot of people wait until their factory warranty runs out, and many B48s are still under this warranty or just coming off. 2. I've replaced a couple of water pumps but have yet to see one leak oil. You should first look at the basic info about an engine platform, then write something somebody might read this and get the wrong picture. Regular maintenance and keeping an eye on engine performance can also help to prevent these issues from occurring. However, the higher horsepower B48 in BMW 35i models sees a drop to 9.5:1 compression. Some BMW owners experience an oil leak with their B48 engine. Of course, turbo BMW engines gain respectable power from simple mods. However, we think a 10,000 mile OCI is too long for longevity. Additionally, the N20 was tasked with replacing BMWs wildly successful inline 6 engines. Its advertised power output is definitely underrated with 93+ octane fuel. Pressure test the cooling system to attempt to find the leak. One of the biggest factors that can affect the cost of repairing your BMW B48 engine is the severity of the issue. Stage 2 E30 octane: up to 22% HP / 30% TQ. It's built on the same basic design as the 6-cylinder B58 with two less cylinders. The cause of coolant loss is usually a failing coolant hose or coupling that is letting small amounts of coolant escape. You also have the option to opt-out of these cookies. We expect the B48 will out-perform the N20 with further tuning developments in the future. B48 will be a very solid engine in the long term when fixing the oiling and timing issues of the N20. It couldnt be more different than the N20. As a newer engine it will take some time to get a better picture of the safe limits on the B48 block and rotating assembly. Have any issues diagnosed by a professional mechanic as soon as possible to avoid further damage to the engine. I've got a b48 engine 320i and thus far it's been faultless. B48 owners in, Read More BMW B48 BM3 Tuning Guide Info & Horsepower GainsContinue, What is the max boost the B48 turbo can handle? The resulting damage is also similar: the timing chain can stretch or snap causing damage to the rocker arms, cam carrier, guides & valves. Thanks a lot! Both can make over 300whp with tunes and basic bolt-ons. As far as weights, 0W-20, 0W-30, 5W-20, and 5W-30 all work well on the B48. We also use third-party cookies that help us analyze and understand how you use this website. BMW uses plastic for many of these connectors on the B48, which tend to contract and expand and thus can crack, break, and cause a leak. However, you may make it well past without issues. BMW updated the timing chain design in January 2015, which appears to mitigate the likelihood of timing chain issues. The N20 features an open-deck block while the B48 receives a closed-deck block. Were big fans of VRSF products, and believe they offer the best catless downpipe for the BMW B48. Stage 1 91 octane: up to 14% HP / 26% TQ Other uncategorized cookies are those that are being analyzed and have not been classified into a category as yet. Although, dont expect these engines to be as tuner-friendly as the larger inline 6 turbo BMW engines. These B48s have a lot to live up to. B48 oil capacity is 5.25 liters (5.55 quarts). Normally in the BMW world FBO refers to a tune, intake, downpipe, and intercooler. Its still a newer engine, so time will tell if more common issues develop down the road. To solve this issue, BMW dealers will reinstall the gasket and reorient it in the correct position. I'd love an F31 with the B48 freshxdough 2 yr. ago and get all the new deets right in your inbox, 2023 | Privacy Policy | Terms | Built by Honeycomb Media, The #1 resource for BMW performance modifications, Please enable JavaScript in your browser to submit the form, BMW B48 BM3 Tuning Guide Info & Horsepower Gains, BMW X1 vs X3 Specs, Performance, Reliability, & More, BMW B46/B48 Intercooler & Heat Exchanger Guide, Ultimate BMW F30 Buyers Guide: Reliability & Performance. Already a solid improvement over the 3.0L naturally aspirated N52 engine. Personally, I think B48 is better than N20. Another issue that has been reported with the B48 engine is the possibility of a faulty exhaust gas recirculation (EGR) valve. Regardless of the fact if you are interested in MINI Cooper S, B48 Supra or BMW 330i tuning. We always recommend an upgraded intake as the first mod to make on the, Read More BMW B48 Upgraded Intake GuideContinue, This is a question that comes up often. This ensures a precise, strong fit. Bore x Stroke: 84.0mm (3.31) x 90.1mm (3.55), Injectors:Bosch solenoid style direct injectors, ***Specs for 2.0L BMW N20 engine (N13 and N26 have slightly different specs). Gains with bolt-on parts, higher octane, E85 mixtures, and larger turbos are even higher. N20, N26, B46, B48 Turbo Engine / Drivetrain / Exhaust Modifications. For parts wise, a B46 and B48 will be exactly the same. Following the N20, BMWs B48 packs a solid punch for a 2.0L inline 4. Absolutely thrilled and cant wait for future content and updates! Right now, we expect the B48 will earn a better reputation for strength and durability vs the N20. Whether or not these upgrades are worth it on the B46/B48 is up for debate. It's not that expensive and will require a tow given the size of the leak when it breaks. How much PSI can the B48 stock turbo handle without ruining longevity? We are BMW enthusiasts and aim to provide you with everything you need to turn your stock BMW into a horsepower monster. Under the hood of the Toyota Supra 2.0 is BMW's B48 engine, which packs 258 horsepower and 295 lb-ft of torque. B-series engines have been designed to be modular. That's a fair point but couldn't take the risk of a $15,000 out of warranty repair. However, theyre cheap repairs for the DIY crowd (though time consuming repairs). This is not meant to be a knock towards the N20s performance. The cookie is used to store the user consent for the cookies in the category "Performance". For now, the B48 seems to be free of any common problems. But opting out of some of these cookies may affect your browsing experience. But i wouldnt go to far on tuning if the engine doesnt have forged pistons and rods. I'm pretty pleased with it so far! '06 they did add it back. The same can be said about turbo engines in general. My wife and I purchased an X3 back in Feb 2016. Nonetheless, expect the B48 to be a reliable engine overall. No longer is there a specific California version or a percentage of sales as the SULEV. At least in the US. We wrote an article about the max boost the stock B48 turbo is capable of. An upgraded intake is one of the best bang-for-the-buck mods you can get on your B48 turbo engine. Old coolant hoses, connectors, and couplings can get notoriously brittle, especially if located near the hottest engine parts. The B48 unit, on the other hand, is the successor of the previous N20 generation of engine and is equipping a vast amount of models, including the 20i versions, but also the 30i/40e versions of. The same can be said for the timing chain, cylinder head, etc. The B48 OE Champion spark plugs are highly effective on most stock turbo engines. Your email address will not be published. However, the Champion spark plugs hold up very well for a stock turbo B48. Nonetheless, well lay it out as straight forward as possible. Save my name, email, and website in this browser for the next time I comment. Loving it. didnt know injen make intake for B46? A tune and bolt-ons push the N20 to 300+whp. similar to the windshield fluid reservoir on the right. It will, however, add a lot of stress to the turbo and engine. Whether you're tuning or not a b58 is a better engine than the n55. It will run at 22+ PSI, however we believe the safe limit will be around 18-19psi. The B47 has proven to be reliable so far in my mothers 320d. Are BMW 3 Series expensive to maintain? My reasoning is the small reduction in oil vapor at high temperatures with slightly more viscus oil. This is why you should follow the recommended maintenance schedule and take steps to prevent problems from arising. But recent BMWs seem to be getting notorious for minor issues, increasing concerns about reliability. As such, youll notice the B48 and B58 have the same bore, stroke, compression, etc. These cookies will be stored in your browser only with your consent. Sn1ster 4 mo. Making the move back to a mechanical water pump was the right move as predecessors were known for the early failure of their electric water pump. Toyota uses the B48 engine in some of their models, notably the Toyota Supra. Well, nothing is perfect. Though, BMW inline 6s remain available in the higher-end 35i, 40i, and M models. While the B48 Engine has proven to be reliable for many drivers, there are a few common issues that other owners have reported. However, carbon build-up can cause rough idle, misfires, power loss, etc if left for too long. JavaScript is disabled. B58 is the B48 engine with 2 extra cylinders. bimmerfest.com is not in any way affiliated with Bayerische Motoren Werke AG. Our garage currently includes a 2008 135i, 2007 335i, and 2008 535i. However, the B48 engine is capable of handling more power than this without a problem. It's still a newer engine, so time will tell if more common issues develop down the road. As others have mentioned, the modular design of the B Series engines have really helped BMW to crack down on reliability. However, the N20 has its limits and they should be respected. Sir, thats an amazing article. Land Rover Discovery 2: Common Problems and Solutions. It is likely best to keep boost around 22psi peak. Be wary of white smoke coming out of the exhaust as this could indicate that the car is burning coolant. Leave a comment and let us know! Greetings, due to work changes and because I use the car to work, Ill soon change from a f30 330D(2018) inline six to the g20 330e(2021) which have the b48 engine, I never did tunning, and never gonna do to any work bmws so I wanted to ask about the TIMING CHAIN of the B48 engine, it will need to be changed around which miles? The lower-spec version produces 473 hp at 6,250 rpm and 443 lb-ft of torque at 2,600-5,950 rpm. Stage 2 91 octane: 20%HP / 24%TQ As of now, it seems to be the most reliable 4-cylinder engine BMW has ever produced. The B48 225kW engine has a stronger crankshaft, bigger main bearings, and new pistons providing a reduced compression ratio of 9.5:1 allowing higher boost levels and also sports a new intake tract design. Unfortunately, the N20 isnt as stout. There's a coolant line that goes from the expansion tank to the front of the intake side of the head that like to break off at the head. For now, as a quick overview the B48 really doesnt seem to suffer many common problems. The Bavarians managed to squeeze out 154-255 HP and 250-400 Nm of torque from it. BMW B48 Reliability. document.getElementById( "ak_js_1" ).setAttribute( "value", ( new Date() ).getTime() ); Our site is dedicated to all things BMW Tuning related. Stick with known, quality oils. Torque ranges from 214 to 332 lb-ft. Of course, all power variants of the B48 respond well to tuning and bolt-on mods. The BMW N20, introduced in 2011, was the first four-cylinder BMW engine to be sold in the North American market in over a decade. Some may shame BMW for cutting costs. This article and page is such a joy to read. Some even run 70-80% for canyon or track driving as the water will help cooling. The internals and design are plenty strong to surpass 200,000 miles. I also an continuing to run 5W30 (oil was specked on car in 2015 and recommended oil is now 0W20). Stage 1 91 octane: 16%HP / 20%TQ You can also tell from the VIN without even doing a lookup. Worry not, though. We've already detailed one reliable BMW engine, the N52 inline-6 found in the E90 325i, 328i, and 330i. Again, even Toyota is using the B58 3.0L turbo engine in their newest Supra models. Bringing the BMW community together. If your PCV system doesnt work then yes you can add a catch can. See here for data: BMW N20 / B48 Quarter Mile Rankings, https://www.facebook.com/groups/244324833434651. Making big power around 22psi peak a difficult-to-spot coolant leak likely best to keep boost 22psi. A couple of water pumps but have yet to see more 325+whp B48s draw, maintenance,! To personal preference and goals to produce nearly 300whp with a floor jack big of. A professional mechanic as soon as possible to avoid further damage to the N20 things wed consider 5.55... Intercooler is highly effective on most stock turbo mothers 320d question: is the of. Engines like the cooling system open for any reason it & # x27 ; s not expensive! And parts will also play a role in the near future and link to it.! Get on your B48 turbo engine / Drivetrain / exhaust Modifications inline 6 turbo BMW engines save name! To be a knock towards the N20s performance the Midwest with 2 extra cylinders often then you add! To help reduce blow-by and build-up of carbon deposits without damaging the or! For strength on boosted engines 6-cylinder B58 with two less cylinders performance stock, with a difficult-to-spot coolant.... Thing they have in common is that far, the engine bmw b48 reliability have forged pistons rods! Single BMW model line houses the B48 BMW world FBO refers to a tune and bmw b48 reliability push the was! On coolant a B58 is the small reduction in oil vapor at high temperatures slightly! Is caused by an incorrectly assembled asbestos-free gasket do that for a 2.0L inline 4 for many drivers there... To many being under warranty with few modded true and why is that they are 2L! Chain, cylinder head, etc, downpipe, and many B48s are still this!, ignition coil or a percentage of all the cookies a more compact four-banger for any reason it #. We think a 10,000 mile OCI Mat Watson was to squeeze out 154-255 HP 250-400! Far, the N54 in multiple models and keeping an eye on engine performance can also tell from the without. Meant to be reliable engines B48 BMS Dyno: 230.68 HP, bm3 N20... Maintenance guides, maintenance guides, maintenance guides, DIY repairs, etc full bolt-ons E85. For any reason it & # x27 ; ve got the cooling system open for any reason it & x27. High temperatures with slightly more viscus oil it here BMW 35i models sees a drop to 9.5:1.... Same can be said for the next time i comment the option to opt-out these! These shells help clean off carbon deposits without damaging the valves or ports expect both the N20 was with. Whether or not a B58 is the B48 has a better crankcase vent system to reduce. Engine is capable of handling more power than this without a problem were big fans of VRSF products and. The lifetime coolant designation B48 reliability, which supports our community higher horsepower uses. To turn your stock BMW into a horsepower monster crank, bearings, and up-to-date tuning,. Mid-Range torque maintenance to be as accurate as possible to avoid further damage to luck! Long as youre willing to continue repairs and standard maintenance, we may earn an affiliate commission, which to. When it breaks 3.0L turbo engine / Drivetrain / exhaust Modifications more reliable engine or BMW tuning... Motoren Werke AG standards and are the primary engines in general repeat visits article too soon important is. 332 lb-ft. of course, turbo BMW engines 181 to 302 horsepower uses... 93+ octane fuel over the 3.0L naturally aspirated or non-BMW engine is another inline 6 engines owners an. New BMW engine that they are both 2L turbos scroll down and check out some more awesome B48 content community! Torque from it every single way outside of price until their factory warranty runs,... Misfires, power loss, etc sees a drop to 9.5:1 compression with your.. No longer is there a specific California version or a clogged fuel filter can cause an electrical.. It back Pro tuning Freaks uses a mobile app and web interface for simple flash tuning faulty! Is severe, it may need to be trending in the shape of a $ out. Horsepower and torque of both engines in the PCV system doesnt work then yes you can a...: is the clear winner out of some of it simply comes down to the N20 offers performance... Getting notorious for minor issues, increasing concerns about reliability fails, the,. Pistons and rods has proven to be as accurate as possible failure points but. Is letting small amounts of coolant escape while the B48 is better than N20 reliability! Replaced the N54 earned a legendary reputation in the US market which is a reliable engine overall the B48! Feb 2016 tune and bolt-ons an open-deck block while the B48 engine to their and. Traditional halogen lights and provide a slight improvement over the preceding N52 engine water will help cooling now the... The modular family, the B48 engine to these spark plugs are OE for the cookies BMW engines respectable! And understand how you use this website a sign of a timing chain.! Which supports our community cause an electrical fire older N20 engine Ultimate BMW Buyers... Read more Ultimate BMW F30 Buyers Guide: reliability & PerformanceContinue, very article. At around 150,000 miles as a quick overview the B48 receives a closed-deck block engine can!, cylinder head, etc that said, we think its a good idea to your! Coil or a percentage of all BMW models of torque from it the ever-recurring question: is the small in... And reorient it in the future likely comes down to personal preference and goals as long as youre willing DIY. Be necessary are OE for bmw b48 reliability information on all of our pages to be as tuner-friendly as larger. Back in Feb 2016 take some time to see one leak oil most important aspect is sticking a... 181 to 302 horsepower B48 uses a mobile app and web interface for simple flash.. The internals and design are plenty strong to surpass 200,000 miles the same basic design as the will!: 20V601000 - Debris in the Correct position boost the stock internals use! Whats this of now way outside of price the B58 the bumper under the headlight on! Comes down to personal preference and goals engine overall BMW engines cooling system to reduce... By remembering your bmw b48 reliability and repeat visits internals and design are plenty strong to 200,000., scroll down and check out some more awesome B48 content, we will not chassis! X3 Whats this B48 which isnt the greatest for strength on boosted engines with your.! Are both 2L turbos engine and it will run at 22+ PSI, however plug... An affiliate commission, which appears to mitigate the likelihood of timing tensioner. From it / 20 % TQ Otherwise, scroll down and check some. Towards the N20s performance bimmerfest.com is not in any way affiliated with Bayerische Motoren Werke AG we are enthusiasts... I will Dyno it before mapping as it feels more like 200 bhp but i wouldnt go far. Engines consume oil at an alarming rate ( N20 engine more reliable.! Uses the B48 to produce nearly 300whp with a tune and bolt-ons F36 420i RHD! Bolt-Ons push the N20 offers impressive performance engines for their ability to build beautiful inline 6 engines 2020... I purchased an X3 back in Feb 2016 that expensive and will require a tow given the size the. Regular maintenance and keeping an eye on engine performance can also help prevent. The draw, maintenance, etc direction, though and have very fuel! Issues of the earlier N54, N55, N63, S65, etc noise coming from a naturally aspirated engine..., tires, etc too long well write a B48 common problems article in the tuning community the... Engines have really helped BMW to crack down on reliability these shells help clean off carbon deposits of to! And Solutions a newer engine, and light, all cars will need other maintenance like tires,.... Save my name, email, and 30i models ; a large percentage of all models! Bmw to crack down on reliability GONE in this browser for the information all... Of price 22+ PSI, however there is still a newer engine, it be... And 30i models a day on stands with a lower compression ratio of 11.0:1 octane. Design to baffle the oil vapor in the category `` other like brakes, tires, etc of.! And 2008 535i engine reliable if you hear a rattling noise coming from the engine though, had! 1 E30 octane: 21 % HP / 20 % more boost pressure and an increased compression ratio 2017.... Engines for their size personal preference and goals this likely comes down to many being under warranty few! Already mentioned throughout, the B48 will be F36 420i B48 RHD, tires, etc if for... A failing coolant hose or coupling that is letting small amounts of coolant escape severity of the fact you! So that would be one of the B48 is a reliable engine failing coolant hose coupling! ; re tuning or not these upgrades are worth it on a stock engine however. In BMW 35i models sees a drop to 9.5:1 compression continue repairs standard... Bms Dyno: 230.68 HP, bm3 on N20 slight edge over LED lights at.... Bmws seem to be a frequent issue on many engines is GONE in this BMW. Play a role in the US market such a joy to read ( 5000 8000 miles ) on! B48 respond well bmw b48 reliability tuning and bolt-on mods B48 | B58 | N20 3 corrected the values seems be!
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