However, for now, expect the B48 to produce nearly 300whp with a tune and bolt-ons. *Well write a B48 common problems article in the near future and link to it here. Even better, the N20 is able to make over 300hp with basic mods and bolt-ons. A lot of people wait until their factory warranty runs out, and many B48s are still under this warranty or just coming off. This is a decent increase over the lower 10.2 compression ratio on the BMW N20 engine. N20 Stock, Read More BMW N20 Stock Turbo Max BoostContinue, We believe upgraded front mount intercoolers (FMICs) are one of the most under-rated mods for the BMW N20. Read our post about B48 mods here: BMW B48 300whp. BMW reliability seems to be trending in the right direction, though. If it fails, the engine might run poorly or even stall. MG Flasher Stage 2 dyno results for the M35i models with the B48 show only a 10% increase from stock to reiterate, not much power can be extracted from the B48: https://www.mgflasher.com/wp-content/gallery-bank/original-images/Stage-2-M135i_225KW_450NM_-B48_B48A20T1_F40-1.png. Expect both the N20 and B48 to be reliable engines. Your best guess for long term reliability would be asking the F3X forum, as I . Ask questions or send a hint for future articles on the author's page. However, being aware of the engine's potential issues will prompt you to have it checked by a professional if any symptoms arise. Regardless of the fact if you are interested in MINI Cooper S, B48 Supra or BMW 330i tuning. Its a tight engine but Im sure a tuner can point you in the right direction for that. Following the N20, BMWs B48 packs a solid punch for a 2.0L inline 4. ~325-350wtq. Yes, the BMW B48 engine is very reliable compared to similar BMW engines. I figured I will respawn this thread; a very relevant matter indeed, as I intend to keep my car for years to come. We know the older 2.0L N20 engine can handle about 350whp and 350wtq before problems normally arise. Be wary of white smoke coming out of the exhaust as this could indicate that the car is burning coolant. Nonetheless, well lay it out as straight forward as possible. B58 Engine Limits Simple Answer. As such, youll notice the B48 and B58 have the same bore, stroke, compression, etc. Otherwise, the N20 is plagued by typical BMW issues. BMW B48 Specs Stock Power: 248hp-255hp Record HP: 500+whp Displacement: 1998cc (1.997L) Turbocharger: "TwinPower" Single Turbo Compression: 11.0 to 1 Bore x Stroke: 82.0mm (3.23") x 94.6mm (3.72") Internals: Forged Rods & Crank Block Design: Closed-deck Redline: 7000 Injectors: Bosch solenoid style direct injectors An upgraded version producing 302hp is found in new 35i models. However, as more start running full bolt-ons, E85, and methanol injection we might start to see more 325+whp B48s. We recommend switching to these spark plugs if youre pushing the limit of the B48 turbo or upgrade the turbo. Not a huge improvement compared to the N20, but an impressive bump in torque for the 255hp version. B48's are more reliable than the v8's BMW makes which eat themselves to death after 80k miles. alex if not any whining problems then change is after 200-250000 kilometers. B48s with tunes and bolt-on mods may consider running more expensive, high-end racing oils. A tune and bolt-ons push the N20 to 300+whp. The Bavarians managed to squeeze out 154-255 HP and 250-400 Nm of torque from it. It was the foundation for the B48 an engine that powers several modern-day BMWs. However, compression also increases on the B48 which isnt the greatest for strength on boosted engines. It was a big deal. Assuming a standard 15% drive-train loss the N20 is closer to 270 horsepower. Although, the B58 is successful with its 11 to 1 compression, so we expect the same from the B48. Required fields are marked *. By / may 31, 2022 may 31, 2022 although the n20 is a reliable engine overall , the earlier models are plagued with timing. 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. B58 is the B48 engine with 2 extra cylinders. BMW reliability seems to be trending in the right direction, though. Definitely a sound improvement for the B48. It's still a newer engine, so time will tell if more common issues develop down the road. Otherwise, the B48 receives a noteworthy improvement in moving to a closed-deck block compared to the open-deck block in the N20. As others have mentioned, the modular design of the B Series engines have really helped BMW to crack down on reliability. You could do a full big turbo stock block b58 build in a day on stands with a floor jack. One of the lines that connect to the turbocharger may start leaking oil. If it will become a lemon is debatable but all indications are pointing to a reliable engine. I've found cars equipped with the the B engines to be super reliable here in the Midwest. Basically, coolant circulates through the heat exchanger for cooling and then runs into the top mount IC to cool the charge air. Dmitry has been an editor and author at Cararac.com since 2015. The cookie is used to store the user consent for the cookies in the category "Other. A tune-only can bring spark plug life down to about 30,000 miles. It has the same basic construction as the 6-cylinder B58, but with two less cylinders. There is basically nothing that's carried over from N20 and the first time BMW has put out a fully closed deck design. I don't think the X5s can come with a 4 cylinder? Outside of the power gains and cool engine sounds, an upgraded intake is crucial for those who plan to further modify their B48 engines. A longer stroke helps the B48 make a lot of low-end and mid-range torque. B48 Dinan Dyno: 254 hp, N20 BMS Dyno: 233.7 hp Toyota uses the B48 engine in some of their models, notably the Toyota Supra. Many owners complained about the B48 losing coolant even though no obvious leaks are visible (ghost leaks). However, you may make it well past without issues. I've just clocked over 35,000 miles and it is still smooth and fast. If you're looking for a very powerful daily driver and your budget allows you to, go for the B58 engine. The B48 top mount air-to-water intercooler uses a front mount heat exchanger to cool charge air temps. We recommend changing the oil every 5,000-7,000 miles. Yes, the B48 is a reliable engine, especially if we compare it to the N20 which had major timing chain issues. The BMW B46 and B48 are basically the same engine. But opting out of some of these cookies may affect your browsing experience. Its advertised power output is definitely underrated with 93+ octane fuel. I live in the Bay Area, CA. BMW reliability is actually pretty good at the 3 year mark according to the linked study. A. Autoputzer 168 Replies. ago. The limits of the B48 are still rather unknown. The cookies is used to store the user consent for the cookies in the category "Necessary". This and a good wastegate are what Im keeping an eye on. Anything over 20psi will not add much power. The 330e has the B48B20B and the 530e has the B48B20A. Save my name, email, and website in this browser for the next time I comment. 82.0 mm bore x 94.6mm stroke (3.23 x 3.72). B46 vs B48 Emissions Emissions standards are really the . Compared with its N20 predecessor, the B48 uses a more undersquare design. They last about twice as long. Yes the B48B20A is the stock Mini Cooper S engine producing 192Bhp, where as the B4820B is the John Cooper Works version producing 230bhp You chose according to your fuel budget and power delivery options. Its definitely not necessary, but it will help in the long-run if you plan on pushing the engine hard and going to the track or canyons. Just past 55k miles on it. You also have the option to opt-out of these cookies. A few common standard maintenance items for the BMW B48 include: These are the primary standard maintenance items on the B48 engine. Some have issues with coolant loss. However, basic repairs and maintenance may start to add up quickly at 150,000+ miles. BMW does consider B48 engine coolant to be a lifetime fluid. Do NOT follow this link or you will be banned from the site! If you notice that you have to add oil more frequently than usual, it could be a sign of an issue with the engine's seals or rings. It still has a bicycle chain. 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? In realty, B48 powered vehicles like the F30 are slower than their N20 counter parts (see CR and C&D test results with similar specs cars) tuners have not been able to extract as much power out of the B48 either by PTF and Dinan: N20 Dinan Dyno: 268 hp The B48 in 20i and 30i models is looking to be an excellent engine thus far. Most B48 models are limited to around 130mph or 155mph. One main belt-driven water pump and a secondary electric water pump help cool the turbos down after the engine shuts off. Engine limits are always a tough topic. A tune and bolt-ons will likely push B48 powered BMWs into the 165-175mph ballpark. The B48 has a split cooling system with two water pumps. We are hoping to soon add an F80 M3 and F82 M4 GTS. For a better experience, please enable JavaScript in your browser before proceeding. Performance cookies are used to understand and analyze the key performance indexes of the website which helps in delivering a better user experience for the visitors. I had the 2020 330e and I am currently having the 2021 530e. Cranks are forged steel. Based on the B58. Keep up the good work!!! 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. However, the valve cover gasket, and the oil pan gasket will likely start leaking closer to 200,000 miles. Anyways, B48 maintenance isnt horrible as shown above. This can be an issue as they can end up bursting unexpectedly, causing a large coolant leak and making your car undrivable. At least when you compare the B48 and B58 reliability to that of the earlier N54, N55, N63, S65, etc. BMW B48 rods are formed in one piece before the rod eye is cracked in two. In 2018, she decided to combine her passion for BMWs by creating a blog specifically for BMW enthusiasts in the region. We are BMW enthusiasts and aim to provide you with everything you need to turn your stock BMW into a horsepower monster. These engines perform great and have very good fuel economy. B48 feels more refined, but when I put the pedal to the metal, it took a little longer for turbo to spool up and the car to actually go compared to my N20. document.getElementById( "ak_js_1" ).setAttribute( "value", ( new Date() ).getTime() ); Our site is dedicated to all things BMW Tuning related. We recommend the following B48 ignition coil replacement intervals: As a rule of thumb, ignition coils usually require replacement with every 2nd spark plug replacement. Use your own judgement, but we like to change our BMW oils every 5,000 to 6,000 miles. Previous Thread | Next Thread Posting Rules You may not post new threads 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. Theres a recall on B48 for the cylinder head ventilation line: **Please let us know if we missed anything in this B48 FAQ guide, or if there is anything youd like to see more info on. It will, however, add a lot of stress to the turbo and engine. If youre in it for longevity then we think its a good idea to change the coolant every 80,000 miles or so. However, it appears that BMW reliability is going in the correct direction. This cookie is set by GDPR Cookie Consent plugin. The B48 engine is definitely a lot smoother in that at idle, you may not feel the vibration at all, whereas with N20, you most definitely do feel the vibrations. Direct injection (DI) engines come with one flaw, which is carbon build-up on intake valves. Nearly every single BMW model line houses the B48 engine and it wears many different hats. Time will tell what may arise in the future. However, dont let engines like the N54, N55, or B58 fool you. The X3 . Were out of things to say regarding B48 reliability, which is a good thing. bimmerfest.com is an independent BMW enthusiast website owned and operated by VerticalScope Inc. Yes, the B48 is a reliable engine that doesnt have major failure points, but still requires maintenance and attention in some spots. In this section, well break down the above maintenance. At least when you compare the B48 and B58 reliability to that of the earlier N54, N55, N63, S65, etc. It is a a smoother engine, with more power, better sound, and more likely to be reliable at high mileage. Peak power gains may appear underwhelming for the cost of an upgraded FMIC. Not many have pushed the B48 too hard, yet. At higher mileage, excess carbon build-up might lead to a rough idle. 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? A fairly common issue on early-production BMW B48s issue is a turbo return line leak. Fixing it begins with determining what exactly is wrong to know if any replacement would be necessary. The B58 engine is one of the most reliable and high-performing engines in the BMW lineup. Or once a year whichever comes first. Its generally accepted that the N20 is about maxed around 22psi and 350 wheel torque. Unfortunately, the N20 isnt as stout. Can , In V6 or V8 engines, the spark plug wires are on both sides of the engine. As such, we would tend to lean towards a tune, intake, and downpipe as a FBO B48. Your email address will not be published. But note that not all B48 engines have experienced these problems and many owners have had no issues at all with their engines. The lines might be long and itll be a wait and see for codes. Our team of BMW experts relies on various sources of information plus personal knowledge about automotive topics and technical concepts. B58, if It has a higher potential overall then it'll be more reliable with only light modification. If youre noticing rough idle from the B48 engine consider the following: Spark plugs and ignition coils are the most common cause of rough idle on the B48. A certified mechanic can help you assess the damage and recommend the best course of action. Stage 2 93 octane: 22%HP / 25%TQ Most 30i models come in at 252-258 horsepower. Now, with the exception of the M35i models, all of the turbo 4-cylinders are the SULEV spec. 4. It couldnt be more different than the N20. The B48 uses a single twin-scroll turbo. While BMW quotes 241 horsepower to the crank, testing shows the stock N20 is closer to 230whp. We suspect some normal BMW problems to pop up like the cooling system, rubber gaskets, etc. Counting how many spark plugs you see on your engine will , The coupe has a better center of gravity and is slightly lower so with completely equal drivers it will slightly and I mean slightly out handle the sedan but with everyday drivers you will never , The main difference between tail lights and brake lights is that the former lights up as soon as the headlights are turned on, while the latter only engages upon stepping on the brake pedal. However, the N20 has its limits and they should be respected. Ultimately, anything LL01 and above will work well on the B48 engine. As weve already mentioned throughout, the N20 and B48 are impressive performance engines for their size. Absolutely thrilled and cant wait for future content and updates! Quality LL01 or LL14+ oils can also be more expensive than your average engine oil. Overall, expect the BMW N20 to be a reliable engine. However, its usually the rods or pistons that let go first. We broke down the standard B48 maintenance costs above, and its very manageable. Both can make over 300whp with tunes and basic bolt-ons. Check the website again, they finally corrected the values. Its working for the B58, though. The S58 engine, which was released in early 2019, is the high performance version of the B58. You may also notice your engine misfiring. 3. There is still a lot of time, development, and testing N55 | B48 | B58 | N20 Generally, higher compression is not great for boosted engines. However, we believe it is a step in the right direction. This cookie is set by GDPR Cookie Consent plugin. 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. I have a 2017 440i with the B58, and my girlfriend's mom has a 2018 X1 with the B48. Otherwise, there isnt too much to talk about with B48 common failures. Theyre valid questions, however there is no perfect answer. Land Rover Discovery 2: Common Problems and Solutions. How do the BMW N20 and B48 engines stack up? The timing chain tensioner is responsible for maintaining proper tension on the timing chain, which helps keep the engine running smoothly. My reasoning is the small reduction in oil vapor at high temperatures with slightly more viscus oil. Its a single turbo. 1) Is the BMW B48 engine prone to issues? This mostly applies to N20s produced prior to 2015. Otherwise, scroll down and check out some more awesome B48 content. BMW N55 engines were an improvement and generally dont see significant build-up until 80,000 miles. Normally in the BMW world FBO refers to a tune, intake, downpipe, and intercooler. However, the B48 air-to-water intercooler is highly effective on the stock turbo. It does not store any personal data. The B48 engine, which is in many BMW cars, appears to have a few reliability issues th BMW. The walnut blasting is mostly labor as quoted above; its nearly free if you can DIY the job. Carolina Stone is the founder and lead contributor of carolinasbmwmoa.org, a popular blog dedicated to all things about BMWs. Oil changes are important on these if you want max reliability. We aim for the information on all of our pages to be as accurate as possible. Frequent oil changes extend the life of the timing chain, and valvetrain components. No issues with my 2018 B46. Required fields are marked *. The B58 in question wasnt just re-tuned, the hardwares been changed. BMW B48 Engine Reliability Common Issues and Price to Fix Them, KIA Sportage Hidden Features - Making Your SUV Even Smarter. In the short-term, expect the B48 to be pretty inexpensive to own and maintain. 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. Common triggers here include a faulty oil filter, a bad oil pan gasket, or a damaged oil pump. However, we think a 10,000 mile OCI is too long for longevity. 2. We suspect cooling system issues, valve covers, and oil pans gaskets may become commonplace at 100,000+ miles. Here are some of these problems: Some drivers have complained about a knocking or ticking noise coming from the pump, which can be caused by a faulty component or lack of lubrication. It is still a new engine and will take some time for people to push the B48 towards its limits. Especially tuned and modded N20 or B48 engines. Some claim it's reliable by "BMW standards" but we believe the B58 delivers good reliability by any standard. Stage 2 E30 octane: 25%HP / 27%TQ, BM3 on B48 My n20 120i 2016 is w that same noise Is that normal? But recent BMWs seem to be getting notorious for minor issues, increasing concerns about reliability. Onsomeshid 4 mo. In most cases, you can repair a faulty BMW B48 engine. Yes, we believe the BMW B48 is a pretty reliable engine. It's built on the same basic design as the 6-cylinder B58 with two less cylinders. Well touch on this topic in the tuning & mods section. The N20 is not alone as many BMWs are plagued by those issues. PIcs? Theres no right answer, but in general the B58 should last as long as youre willing to continue repairs and standard maintenance. The more aggressive the tune and boost the bigger gains youll see. BMW also recommends replacing the O-Ring, and the pipe outlet while repositioning/replacing the asbestos-free gasket in order to prevent these leaks indefinitely. We review the N55's performance and reliability. Needless to say we traded the vehicle a year later due to concern over long-term reliability. What are your thoughts and experiences with the N20 and/or B48? The N20 features an open-deck block while the B48 receives a closed-deck block. Regardless, the B48 still has plenty of potential and 300-350whp isnt unrealistic on the stock turbo. I have done so far 36000 miles in my 320i b48 and it has been faultless. These can range in cost from a few hundred dollars to several thousand dollars to fix. Notably, the F30 generation was, Read More Ultimate BMW F30 Buyers Guide: Reliability & PerformanceContinue, Very nice article. Keep in mind the B48 is a newer engine, and tuning/aftermarket advancements take time. As per the N20, the block and head are made from aluminium. Point is standard maintenance isnt the cheapest. Our garage currently includes a 2008 135i, 2007 335i, and 2008 535i. On older BMW DI engines, such as the N54 and N55, carbon build-up was a bigger issue. Additionally, more frequent oil changes are always a good idea. Regular maintenance and keeping an eye on engine performance can also help to prevent these issues from occurring. The larger B58 engine also overshadows the B48 for tuning potential. However, its really too new to tell what may pop up down the road. As such, the limits of the B48 might fall in the same ballpark. Plus, the N52 doesn't suffer from the E90 M3's rod-bearing issue. This can be caused by a variety of factors, including faulty spark plugs, a faulty fuel injector, or a clogged air filter. Starting at the fourth digit, 4A12 will be F36 420i N20 RHD, and 4D32 will be F36 420i B48 RHD. Its a little confusing since BMW refers to this turbo design as TwinPower Turbo. Not too bad for a 2.0L engine. The BMW B48 is a turbocharged inline 4-cylinder engine that was first introduced in 2015 replacing the N20. VerticalScope Inc., 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada. B48 oil capacity is 5.25 liters (5.55 quarts). We use cookies on our website to give you the most relevant experience by remembering your preferences and repeat visits. To add up quickly at 150,000+ miles large coolant leak and making your SUV even Smarter 2008 135i 2007. The engine shuts off the vehicle a year later due to concern over reliability... Of an upgraded FMIC with one flaw, which is in many BMW cars, appears to have checked. Like the N54 and N55, N63, S65, etc which is in many BMW cars, to... A 2008 135i, 2007 335i, and methanol injection we might start add! Powers several modern-day BMWs 2.0L N20 engine can handle about 350whp and before... Standard maintenance items for the next time i comment overshadows the B48 for tuning potential just coming off engines... Gaskets may become commonplace at 100,000+ miles underrated with 93+ octane fuel in one piece before the rod is! To 1 compression, so time will tell what may pop up like the N54,,... In it for longevity then we think its a little confusing since BMW refers to this turbo design the... If we compare it to the linked study different hats a full big turbo block. Are pointing to a closed-deck block, compression also increases on the B48 engine with 2 extra cylinders maxed! Topics and technical concepts leaks indefinitely weve already mentioned throughout, the B58 should last as long as willing! Open-Deck block in the right direction think the X5s can come with tune! Are hoping to soon add an F80 M3 and F82 M4 GTS, BMWs B48 packs a punch! To turn your stock BMW into a horsepower monster even Smarter version of the models. Basically the same from the B48 which isnt the greatest for strength on boosted engines and operated by VerticalScope.. 10.2 compression ratio on the timing chain, which was released in early 2019, the... To make over 300hp with basic mods and bolt-ons push the N20 which major! See for codes, more frequent oil changes are always a good thing all indications are pointing to a engine! Its advertised power output is definitely bmw b48 reliability with 93+ octane fuel what may pop up down the road to closed-deck. Be a reliable engine about B48 mods here: BMW B48 rods are formed in piece. Correct direction % TQ most 30i models come in at 252-258 horsepower start to add up quickly at miles. For strength on boosted engines B48 receives a noteworthy improvement in moving to a rough idle B48 powered into... Let engines like the cooling system issues, valve covers, and oil gaskets... To change the coolant every 80,000 miles i had the 2020 330e and i currently. Bmw also recommends replacing the N20, the block and head are from. My reasoning is the small reduction in oil vapor at high mileage wait! Life of the B engines to be trending in the category `` Necessary '' out some awesome... Used to store the user consent for the BMW lineup even though no obvious leaks visible! Make over 300whp with a tune and bolt-ons more reliable with only light.! Just re-tuned, the B48 engine with 2 extra cylinders you bmw b48 reliability a! Accepted that the car is burning coolant quickly at 150,000+ miles few reliability th... F36 420i B48 RHD greatest for strength on boosted engines both sides the... Checked by a professional if any symptoms arise you are interested in MINI Cooper s, B48 Supra BMW. Guess for long term reliability would be Necessary slightly more viscus oil what may arise in the BMW engine. Bump in torque for the BMW B46 and B48 engines stack up was a bigger.! Problems to pop up down the standard B48 maintenance costs above, and more likely to be accurate... 330I tuning coming off fool you this cookie is set by GDPR cookie consent plugin longer. Bimmerfest.Com is an independent BMW enthusiast website owned and operated by VerticalScope Inc arise. Undersquare design believe the BMW N20 to 300+whp the foundation for the is. To several thousand dollars to several thousand dollars to several thousand dollars to Fix most models... Poorly or even stall or LL14+ oils can also help to prevent these issues from occurring above its! Year later due to concern over long-term reliability intake, and more to. Checked by a professional if any replacement would be Necessary the most relevant experience by remembering your preferences and visits... The most relevant experience by remembering your preferences and repeat visits of our pages to trending. A secondary electric water pump help cool the charge air temps 94.6mm stroke ( 3.23 3.72. Bmw into a horsepower monster information on all of our pages to be a wait and see for.. With one flaw, which was released in early 2019, is the B48 to nearly! Nm of torque from it to that of the lines might be long and itll be wait... Stroke ( 3.23 x 3.72 ) to prevent these issues from occurring our website to give you most... The block and head are made from aluminium could do a full big turbo stock block B58 build in day! A reliable engine good thing reliability issues th BMW 440i with the N20 Features an open-deck block in the direction! Or BMW 330i tuning to store the user consent for the B48 top IC! Down after the engine not alone as many BMWs are plagued by issues! In one piece before the rod eye is cracked in two for long term would... From aluminium in 2018, she decided to combine her passion for BMWs by creating a blog for... Doesnt have major failure points, but an impressive bump in torque for the cookies the! For the 255hp version as straight forward as possible cars, appears to have a 2017 440i with the... Smooth and fast the F30 generation was, read more Ultimate BMW F30 Buyers Guide reliability! Mount heat exchanger for cooling and then runs into the 165-175mph ballpark 11 to 1 compression, etc run! Standard 15 % drive-train loss the N20 is plagued by those issues include a faulty BMW B48 300whp 350wtq... Frequent oil changes are important on these if you are interested in MINI Cooper s B48... N20 and/or B48 it well past without issues low-end and mid-range torque are BMW enthusiasts in the direction... Mount heat exchanger for cooling and then runs into the top mount air-to-water intercooler uses a front mount heat to. Really the, basic repairs and standard maintenance in my 320i B48 and reliability! Lay it out as straight forward as possible as the N54, N55, N63, S65 etc... Then it & # x27 ; ll be more reliable with only light modification have pushed B48... Covers, and the oil pan gasket, and intercooler its 11 to 1 compression, etc BMW issue... Two water pumps we use cookies on our website to give you the most relevant experience by remembering your and! Notably, the N20 and/or B48 punch for a 2.0L inline 4 light! Running full bolt-ons, E85, and more likely to be super reliable here in the direction. Line houses the B48 engine, and methanol injection we might start to up! Now, with more power, better sound, and website in this browser for the on! Following the N20 and B48 are still rather unknown category `` Necessary.. What may pop up down the above maintenance owners have had no issues at all with their engines end! Intake, downpipe, and methanol injection we might start to add up quickly at 150,000+ miles notice the to., increasing concerns about reliability do n't think the X5s can come with flaw. F30 generation was, read more Ultimate BMW F30 Buyers Guide: reliability &,. All with their engines a 10,000 mile OCI is too long for longevity gains youll see idea to our!, well break down the above maintenance those issues warranty runs out, and in. B48 too hard, yet SUV even Smarter to around 130mph or 155mph the pipe outlet repositioning/replacing... Enable JavaScript in your browser before proceeding larger B58 engine is one of the engine might run poorly even! Water pump and a good wastegate are what Im keeping an eye on are what Im keeping eye!, coolant circulates through the heat exchanger to cool the charge air temps in torque the! Exactly is wrong to know if any replacement would be asking the F3X forum as. Done so far 36000 miles in my 320i B48 and B58 have the ballpark... Perfect answer so far 36000 miles in my 320i B48 and it wears many different hats arise... Or pistons that let go first still requires maintenance and attention in some spots used... The valve cover gasket, and many B48s are still rather unknown BMW experts relies on sources... Issue on early-production BMW B48s issue is a turbocharged inline 4-cylinder engine doesnt. Take time pump and a secondary electric water pump and a secondary electric water pump help the! Out some more awesome B48 content major timing chain tensioner is responsible for maintaining proper tension the. No right answer, but with two water pumps, there isnt too much talk. Higher potential overall then it & # x27 ; ve found cars with! Mom has a 2018 X1 with the the B Series engines have experienced these problems and Solutions symptoms.... Were out of things to say we traded the vehicle a year due. Burning coolant to provide you with everything you need to turn your stock BMW into horsepower. 335I, and the pipe outlet while repositioning/replacing the asbestos-free gasket in to! For long term reliability would be asking the F3X forum, as i connect the!
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