This BMW Engine is FINALLY Toyota Level Reliable (N54/N55/S55/B58) 

If it's still putting down the road in 20 years with no major repairs then it is Toyota reliable.

The recent B58’s are making well over 400hp crank now. BMW rates them at 385 but guys are seeing 385 at the wheels on the dyno. SUUUPER impressive.

I have the B58 in my X5. Tons of power,smooth acceleration, and decent fuel economy. No reliability issues so far!

For 24/25, they’ve upped the HP for the base B58 engine on the X5 to 375 HP and 398 ft lb torque- And with 25 mpg combined EPA. Incredible engine and what looks to be great reliability. I’ll take it !!

I was slightly disappointed I didn't get the N54 when they first came out, but years later (and still to this day with 265k miles on it), I'm glad I have an N52 in my 2007 328xi E92 6MT! Edit: 286k miles now! I should hit 300k by next spring!

Bro I have N57 on my Diesel X5 2017 35d m sport and I'm telling you is bulletproof engine, just amazing.

Great video Mark. Loved the detailed history of the modern BMW 6. Toyota really pushed BMW on the latest 6 to build it reliably. Interesting was that Toyota was flying engine bolts to Japan to test the strength.

For over 2 years I am driving 6 years old 5 series with B58, currently on MHD stage 1 and no issues whatsoever at 70k miles. Just oil and filters every 6k. Drives like a dream. It is my 8th BMW and best engine so far. I can highly recommend this one.

N54 owner here. Took my car from 108xxx to 175xxx. I can say that some things like the waterpump and pre-'08 N54s had HPFP issues. If BMW simply went with less plastic(valvecover, charge pipe, recirculating valves, waterpump) BMW could have saved a lot of issues and been much more reliable. Most of those parts are actually surprisingly cheap to fix(for BMW) and if you did them yourself you really wouldn't have batted an eye at the cost. Plastic doesn't belong in engine bays, too many chemicals, heat cycling, etc. Hoping to get in a B58/S58 in the near future. No S58?!

I had a BMW M340ix with the B58 engine and it was fantastic. I went ahead and upgraded to the 2020 X3M competition which uses the (S58) variant and it’s very good too. Honestly, if I could go back I would probably pick the X3M40i which has the B58 because it has plenty of power off the line.

The B58 is the only turbo BMW I want. I like the BMW Z4 M40i and the 340i. I am a huge fan of BMW’s N/A engines having owned everything from M20,M42,M30,S38,M88,M54,S54, S62, and N52. I currently have my 06 330i sport pack manual with the 255hp N52 as a daily driver and it is extremely reliable. The S54 M Roadster and S62 E39 M5 are for special days. I am glad BMW is redeeming themselves with the engine but they still have work to do in the styling department to bring back the magic of the good ‘ol days. These newer engines can’t provide the beautiful sounds of the older N/A engines, but that’s why I will always keep an N/A BMW in my garage.

Mark this is literally the video I've been waiting for. You really shined a light on just how great the B58 motor is , and it will gain legendary status! Hopefully all the BMW haters will see that BMW has reliability nowadays, and when people like myself defend the brand it's because they have some truly excellent powertrains! B58 blows my mind everytime I get behind the wheel!

Great Video Mark! I have a 2014 M135i which has the N55 engine. Currently on 79K miles. Apart from boost pipe failure its been pretty solid.

Can’t beat the reliability of the naturally aspirated straight 6. N52 with cold air intake is plenty for a lightweight car to have fun

The b58Tu which is found in the m40i,m340i/m440i which produce 382hp is even better than the B58 that was first release and used in the non M-40i models.

This video has inspired me. I may start a channel talking about reliability of BMW just like Scotty Kilmer talks about Toyota and Lexus.

Loved my BMWs but I always carried spare parts and followed preventive maintenance schedule. Great info on this video.

I think we need the same video but for 4 cyl, n20 vs b48 vs b48tu, many people think only on 6 cyl, but now pretty much everything ,if not a x40i, comes with 4 banger.

Its crazy to see that the S55 in the M4 is sooo reliable and fuel efficient despite all the power and great driver experience it produces. Great video as always. I love ECPP because of the BMW videos.

I’m starting to see the 540i coming down to tasty prices, I just wonder about non engine related issues though… additional electronics, etc. Great vid!

57Kmiles on my N55 no engine issues what so ever . I don't push it hard, no tune, I change my oil liqui moly every 3k and its treating me like a beauty. Enough power to push my 640xi , I just know there are a lot of maintenance items coming very soon.

So I have had my 2008 335i since 2011 and it has now done 170k. I have religiously followed the service regiment, and addressed every single issue as soon as they appeared. What did I change during this time other than standard things like fluids, filters and pads? 1. High-pressure fuel pump, changed once. 2. Water pump, went after about 155k 3. flushed transmission once, and changed mechatronic sleeve 4. changed spark plugs twice 5. coil packs once. 6. Front shock absorbers once 7. Charge pipe That's it. Take care of the car, and the car takes care of you. Leaks? Only once from the front shocks right before they went. Sitting inside driving, the car looks and feels like new. No rattles, everything is tight. It is such a treat to drive, love the hydraulic steering rack, so much better than the newer electric ones!

Everything breaks. Until BMW lowers repair costs, Toyota will be king.

I'm sticking to my '07 E92 with the N52 with 95k... Only 215 bhp but sweet engine. Sorted the usual gaskets and vanos... Next will be a water pump and thermostat and that should be me for the next 50k. Oil changes every 5k is a must on these lumps. Loved this video btw 💚

I have the B58 inline-six in my 2023 840i. Although not a rocket like the M850i,(which processes the N63 - 4.4L twin-turbocharged V8) it still seems pretty spunky with 337 HP. I simply couldn't fathom spending $115K for the rocket-fast V8 M850i, which would never see its potential except on the track. I'm very pleased with my BMW 840i. Thanks, Mark for the reassurance about the B58. I always worry especially after watching all your BMW-related video's.

I sincerely hope the engines they are making now will go 300,000-400,000 km like the older non turbo engines would without significant issues. If this is the case I may actually consider buying a BMW again however I am adopting a wait and see approach - once bitten . . . . based on my experience I'll take reliability over tuneability.

Recently bought a slightly used lease return 2021 BMW X3 2.0L Turbo. Blue exterior with beige interior with Panoramic sunroof. It has the B48 engine.....hope it's reliable. I'm driving my X3 gingerly.😇😇😇 Good explanation of the BMW engines.

What’s up guys I own a 2009 n54, it has 85k miles I had it for four years and my guy is not lying about the diy’s. But again I love working on my car I do everything myself, the car is full bolt ons, which means dual cone cold air intakes, oil catch can, aluminum chargepipe, Blow off valve, aluminum outlets, silicone inlets, aluminum intercooler, catless downpipes, stage2 low fuel pump, upgraded twinturbos, on a custom tune. These cars aren’t too bad to be honest, once you upgrade all the plastic parts it’s good, it’s not like they break every week lol That’s why I tell people it’s maintenance over modifications. Because you don’t know how the previous owner treated the car. You have to do oil change and all fuilds, vacuum lines so you don’t have boost leaks, spark plugs, ignition coils, and fix any type of leak coolant or oil, fix it asap. And you can’t expect a car not to break if you’re abusing it everyday, come even a lambo or Ferrari will break, take care of your car and it’ll take care of you. Last thing If you don’t like working on cars and you want a bmw you better have deep pockets or just get a Honda or infinity 😂 🤷‍♂️

Got a 335is at 54k..replaced everything for peace of mind and I’m at 134k FBO rn with no issues but I know it’s time for a refresh and new turbos. Oil change every 3k miles

My uncles got a M140i B58. My gosh that engine is a monster! He tuned it pushing 421bhp

Great video. It's funny to see that the engine's greatest attribute is It's less likely to grenade itself. I hope the timing gear is genuinely improved for the long term since it's on the back of the motor now.

My X6 is B58 , has lots fun to drive, thanks Mark make me understand my car !

I just hit 70k miles on my 2018 540i with the B58. No issues so far and it is a blast to drive!

My 2012 e92 328 RWD 6 spd has been “mostly” rock solid for the most part. 160,000!km and two injector coils and issues when I was forced to let it sit for 6 months when I moved it from AB to Southern California, finally and when I loaded it to a friend and they somehow blew up the clutch… Total repair cost over 10 years about 6000… not the best not the worst. Big chunk was replacing the transmission.

More good info. One of my favorite channel. Thanks.

I have 68.000 miles on my 2019 440i. The engine is as tight as the day I bought it...loads of power on tap and great gas mileage in Eco mode. Having driven nothing but Toyotas since day one, I bought the 440i because of similar videos praising the B58 engine. So far, so good.

Excellent video! I am vette/Lexus/Acura guy and recently been looking at M4’s and M440i’s you answered all of my questions! Thanks for putting this together! 🙏🏾

I have a 2013 535i Xdrive with the N55 with 96K miles and gets 30+ mpg on the highway and currently have had no major issues with the engine and drive train. I've replaced both CV axles, low pressure fuel pump as well as the valve cover gasket. Outside of that the car has been very reliable.

You forgot the M57 inline six diesel engine. The old M20 and M30 inline sixes we're pretty good too back in the golden age of BMW.

I guess the verdict isn’t in on the S 58 yet but I think you for steering me in the right direction with my M440 2022

There’s loads of videos of people tuning these things well past 1000hp. A lot of which are still using 50%+ stock parts

The B48 is shaping up to be a pretty reliable drivetrain as well.

I haven’t had any major issues with my N55 and I’m willing to say its Toyota RELIABLE!!!!!!

I'm glad they've fixed the b58 thanks to Toyota. I hope the same can be said for b48. My timing just failed at 100k and second engine and cars got 217k mi.

Although stock reliability is increasing...the number of repairs needed increases with each iteration due to added complexities of more sensors, emissions components, automated / luxury features, and overall higher number of components in the vehicles. From this perspective....the original 335i with an N54 is probably the friendliest (boosted) BMW to own and maintain at the 10+ year mark.

The N54 has a open deck block too. Although it's a great engine, I prefer the M54 with the closed deck block. I'd rather supercharge or turbocharge a M54.

In my opinion this video is best one you made 👏

The S58 is my pick. Only because I bought one. We’ll see how the reliability goes.

I had a N54 335i….I felt your pain😅 It should be noted the B58 also has both injection (direct & port). This take care of the carbon buildup issues behind the valves & intake.

Your breakdown is good and info is pretty accurate, but your potential horsepower numbers are way off. There's no way you can make 1000 hp on N54 or 700 hp on N55 or 1300 hp on S55 even close to reliably without MAJOR modifications like a completely built motor. If you look on the forums, cars tuned that hard are not very reliable. I am not sure about N54 but I know N55 really shouldn't go past 450 whp if you want a reliable car. S55 shouldn't go past 600. Also, on S55 the crank hub can spin (especially if tuned) and charge air cooler cracks and leaks frequently.

Nice to see the engines being reliable what about the rest of the car?!

I have a M340i and it has been super reliable thus far.

Good info Mark, I wouldn’t buy BMW without B58 which is unexpectedly reliable engine as my son has one with 124,000 and no issues, hard to believe

Awesome technical details for someone thinking about which engine to buy.

Currently 41k miles in my GR Supra. Zero issues so far.

Great review. I’ve owned BMRs with the N54, N55 and S55 engines. The N54 also has carbon buildup on the exhaust valves that have to be cleaned periodically. The S55 is a top end engine. Dual coolant systems, 5-6 separate radiators, dual HPFP’s. The only warning for mod folks is you’ll have to replace the original crank hub or it might spin and destroy your engine.

The N55 data isn't quite true in all cases. The 2014+ electronic wastegate (EWG) N55s all have the forged S55 rods and also the S55 rod bearings. The N55 in the M235 and M2 have a forged crank. The EWG N55s also have a larger turbo than the 2010-2013 N55s with the pneumatic wastegates.

Love my 2009 e90 with the classical N52 engine, changed water pump and thermostat by myself and VANOS solenoids. Moved up to a F25 X3 with N55 engine, and replaced the valve gasket over a weekend wrenching in my garage, now it's clean and no smelly air in the cabinet. I listened the sounds of those 4 cylinder turbo engines like N20, those sounds horrible and story about their timing chain really scared me away. Now I am really looking at the B58 engines, seems a good bet with BMW for better reliability.

Great information. BMW have always been such a cool looking vehicle. Opening the door and looking inside was always an exciting moment. That reliability was a reason I tried Mercedes. Not a ton better but engines are better. Glad BMW is getting back on track. Now let's see them get rid of so many platic parts. Thanks Mark.

A breath of fresh air on BMW stepping up reliability. In general, turbos provide additional power in smaller engines and thus are a great marketing attribute for folks who prefer high performance cars over economy. The EPA places so much pressure on manufacturers to decrease fuel consumption and carbon, which is not what people who love high performance are necessarily interested in and as a result, manufacturers have also made detrimental changes to lighten vehicles with plastics which are intolerable to conditions of performance cars in the long run. In turn, plastics are compromising reliability (longevity).

Another very reliable (just small and every now and then appearing known issues) engine from BMW is the N52B30 which is also known as one of the last 6 cylinder inline naturally aspirated non direct injection BMW motor available out there. You can have those in the BMW E60 generations.

Love the B58 in my Grenadier. Others are taking note and switching back to the inline 6 configuration.

To add to this: I got an s55 pushing around 600 crank hp tuned for like 15k miles and 2 years. Car currently has 40k miles on it and no issues and I beat the piss out of it. Car is going at least 100 and red lining every time I take it out. Hit 175 in it too, could’ve gone faster, but thought that was good enough lolll

Great video, please do another similar for BMW 2 liter engines over the years

I have the n54 e90 08 rn issues at this point just water pump gaskets still fresh! Hopefully it stays that way for longer time but overall the performance I get out of it makes me happy for under the 10k including the cars price I spent on it stage 2 and loving it wouldn’t change it but I would say I want that 340i badly hopefully soon I can have one as well with my n54 on the side! Dream goal though is that s58 m3 hell of a robust block they put in there

My B58 had low oil alert at 12k miles. Toyota dealership didnt help me besides selling me a quart of oil, and I poured it in directly in front of the dealership. They had no idea what to do with the car, googled the recommended oil, and sent me to the parts department.

For those who can't pay the uppricing of a B58, the B48 99% identically constructed. Better to say Its the same engine -2 cylinders. It still can be very nasty fast with the 256hp B48 config.

I own the s63tu.. Its a super solid and reliable basic maintenance no real mechanical issues.. 2013-2016

Great video, Mark - I always wondered if there was anything about BMW that you did like. So some reliable engines, it's just the rest of the under the hood components that don't cut the mustard. Makes me hope there are some after market parts that address the problems.

I have a ‘08 328xi, have had it for 6 years now and the engine runs like brand new. I only had to replace the valve cover gasket and some basic maintenance (oil changes, spark plugs, ignition coils). It’s a non turbo, and it’s fast enough for me.

My BMW is so reliable guys. I just bought brand new BMW at 0km and drove to home still no issue.

Good job Mark I have my pumped up n54 that still rips hard at 24 years old also have m3 s65 v8 for the COOL factor😎

Toyota didn’t take just the B58 specifically, they took the entire Z4 drivetrain/chassis as Toyota had nothing in their portfolio. So Toyota had to take all engines which are/were available in the Z4, so the Supra not only has the B58 but also has the B48 from BMW

My 2013 335i was aweful. Had to pay thousands 3 times for multiple oil leaks. No matter how many times I paid to get oil leaks fox it kept breaking. Never again.

Thats why best bmw daily is n52.

BMW now ranks 3rd on reliablity as of Nov 2022 statistics

How do you measure reliability? Is there a certain specification or standardized testing procedure available to evaluate such ? What is the test result let’s say for N55 vs B58 ???

the n54 is reliable if youre not a weeb that cant take care of it. i have a 2011 740li with 178k miles, original turbos, original water pump. never leaks, no n54 issues at all. my 2008 535i 150k miles, 80k of those at 700whp and i have had to redo a few gaskets. my 335i made it to 160k before i started having issues. you absolutely need to know how to read a bmw assembly log and how to torque the bolts. youre suppose to go 180 degrees after torqueing 80% of the bolts on these engines. if you let them leak oil even at all, you will have rod bearing issues. if you dont replace the rubber gaskets every few years youre going to have a bad time. futhermore, maxxecu and the harness are cheaper than the index 12 injectors , you can plug the head and go port only injection on full standalone for the same price as replacing the stock injectors and if you upgrade to the metal water pump, you will have 0 issues period. i daily drive my 800whp 8hp75 swapped 335i 2 hrs to my office and back every day, runs like a champ on maxxecu. your maintanance on that car was NOT up to date if all that stuff failed. have built about 10 of these. they arent hondas, they arent ls's. you actually DO have to take care of them and know what you are doing. you can sleeve an n54 block, upgrade studs, upgrade valvesprings, pistons, rods and go make 900whp all day for like 5k dollars.

0:25 is a Volvo.

12:10 Papadakis racing modified one to make 1k HP, I don't know if we could call that a tune, but he has shown that this engine has the potential.

As an b48 owner I can confirm this new b48 b58 is outrageously reliable.

Got everybody beat here.....Bought a 2017 x3 35i, with N55 motor and I didnt even make it home from the dealership, overheated on me on the way home. Water pump and sensor took a hiatus on me soon as I signed the dotted line, had to spend the night in it, cell phone was dead and in a rough part of houston. Woke up to a cop tapping on my window, he took me to a hotel to get rested and ready to tee off on the dealership that following morning. He said it was a miracle I wasnt mugged at minimum, or in the bottom of buffalo bills human holding cell.

Great video. Loved the detail and history of the inline 6.

The change to plastic oil filter housing and the location makes for frequent, timely and costly repairs.

But which B58 to get? Thanks great vid!

Appreciating this video, as I have the X3 M40i , just like the one that you're showing in this video. It's my first BMW.

Yes but some reason mounting engine brackets do fail. This never happens on Japanese brand.

I have a s55 and can't complain

I’ve I had a sweet tooth for BMW, However, it sounds as if BMW has out smarted itself. Thank you Mark, 🇨🇦 ✌️❤️ Cheers 🥂

I have an S55 and this was reassuring. Trying to decide if i want to keep it or drive a Lexus with a NA 3.5L V6 AWD. :/

People who have had unreliable BMWs don’t do their maintenance, and have cold oil run through the engine every cold start.

B58 is also used in a grenadier

Keep up with maintenance and they’re all pretty good and most if not all problems can be fixed with aftermarket solutions

I have an 92 E30 with 246,000 miles on it...original engine...and, I'm the original owner...that's reliable!!!

Toyota did tear down the b58 and rigorously tested it over and over. Sent it back to BMW multiple times to have certain areas strengthened in order to match Toyota reliability. The b58 will prove it's build quality in time.

You really needed to spend more time on the N55. There are SO MANY variants... culminating in the M2 which has the forged internals of the S55.

I’m glad I went b58

I’ve been wanting a fast, but reliable car for a while. So what you’re telling me is, I should buy a brand new Toyota Supra, especially since it has a standard transmission now? I have to admit, I’ve been a naysayer of the new supra for the two reasons thatit has a BMW engine, and at first was only offered in automatic. Other than that, from the outside looking in - I love the car.

I’ll compare Bimmer reliability to Toyota when someone can show me a BMW and say “100k miles? Oh you’re just getting started”. What’s sad is a lot of companies aren’t doing turbo performance so you kinda have to go BMW now. Only reason I’m getting over my E92 M3 ptsd and still want an F80 M3 lol

N55 is great! Super reliable if you keep up with the maintenance. 50k miles on my 18 M2!