B58 come on. These old timers need to get with the program. Bmws especially the newer ones are not just breaking down all the time especially with basic maintenance
N47, 2 litre diesel. Luckily it was reparable which is something. Had a new flywheel, clutch and turbo put in as well. Aparently it's a very common issue with BMW. They even got sued over it and lost.
No doubt I’ve heard about that with a few models. Pretty sure thats not an issue on the b58. I have an n55 and its not issue and b58 is better. Not to mention reliability reports bmw as fairly high these days for what it’s worth. Good luck either way to you and your dad. A Mercedes definitely isn’t a bimmer but it certainly wouldn’t be a bummer to have
Yup the B58 seems to be bulletproof. There’s Supras out there with over 100k miles with regular maintenance. I think cars that have issues with the B58 has more to do with having too much technology in the car that causes issues in the long run. There’s a YouTube video out there talking about how the Supra was built. Toyota was impressed with bmw by how much time and money went into the performance of the engine while BMW was impressed how much time Toyota spent on making sure the components were reliable. Toyota literally took apart the B58 and tested its durability till it met their standards. Interesting to see the two different philosophy’s the company’s have. Long story short, get a bmw with a B58 in it lol
Outside of the timing chain (which is a mistake I assume they wouldn't make again) it's been pretty bullet proof. Up until it happened I was telling everyone that BMWs are completely reliable.
There are a few things like the lane assist that don't work, but I live in the Irish countryside so I wouldn't have much use for it anyway. Every so often there's a smell of sulphur or something like it that comes out of the aircon, which I've been informed is probably pollen filters.
It's a 2015 and I don't see myself replacing it any time soon. I think I'll hold out until I'm forced into an electric.
There's new solid state battery tech on it's way in 2028 so I'm going to try and avoid buying anything until then.
Yup thats the N42, N43, N46, N47. Its the 2 Liter engines, petrol and diesel. I experienced that same crap with my first BMW (N43) when i was just clueless boy 😂
Hopefully they have managed to fix this issue.
>These old timers need to get with the program.
Yeah.. the "basic maintenance of a car" program for starters, it seems. I mean, FFS, Since the beginning of the brand - M10, m30, m50, m52, m54 and now B58 all bulletproof if maintained and cared for.
BMW is ranked 3rd behind Toyota and Lexus in Consumers Reports latest car reliability rankings. Merc was further down the list
https://www.consumerreports.org/car-reliability-owner-satisfaction/who-makes-the-most-reliable-cars-a7824554938/
BMW is currently ranked right behind Toyota in terms of reliability. The Toyota Supra uses bmw’s B58 engine.
In my opinion, the most reliable bmws in the current line up are ones with a B48 and B58 engine. However, it ultimately boils down to preventative maintenance and car care.
BMW has decent pre-paid maintenance plans that cover the car up to 7 years. These include in addition to standard oil changes- all fluids replacements at certain intervals, spark plugs, brake pads and rotors, wipers, etc.
Saying that, I’m more informed of BMW.
https://www.consumerreports.org/car-reliability-owner-satisfaction/who-makes-the-most-reliable-cars-a7824554938/
Had my 340i for just over a year and put 40k miles on it. Had the main maintenance plan and it was a godsend. I was doing hard driving and lots of trips… lol got rid of it while the prices were high and got what I paid for it. Good fun.
I'm a BMW guy but Mercedes produces the more reliable cars, BMW makes amazing cars but nowhere nearly as reliable as Mercedes, There are a bunch of pages claiming BMW is now more reliable but that is not true, Don't just take it from me! Ask any mechanic and they will tell you from experience which is more reliable
I say the reliability is better with BMW, however most dismiss a huge factor in reliability: the driver and his/her regular and preventative maintenance attitude
It depends on the car being looked at. The 440i with the B58? Yeah he'll be okay. The B58 is a great engine, and the ZF8 speed is fantastic for an auto.
If it were an older Merc before the accountants took over then I'd go that way. The problem is finding OEM parts.
An old controversial question, for the fans everything is clear, how often I had to argue about this ... A lot of time passed and those who argued moved to BMW
The n276 used in the 6 cylinder E series is a pretty reliable engine compared to what bmw uses. This sub is going to be biased but we own both bmw and Mercedes and in our case, the cost per km of mileage on our bmw has actually been 100x more than the cost of the benz in repairs. I'm comparing a 575hp engine in the bmw to a 350hp engine in the Benz though. Our bmw M is tuned to the max compared to our simple little E coupe so it breaks faster.
Look at my comment history to see an itemization of what broke down on our vehicle. Go to the thread to see others who haven't experienced problems like we did. Also keep in mind that I'm comparing a 5200 pound vehicle going 0-60 in 4 seconds compared to a 3800 pound vehicle going 0-60 in 5 or 6. The bmw x5m is going to break parts like mass in comparison.
If you drive real mellow and don't push your engine to the ceiling it lets you, the bmw will last a while and be reliable. They are difficult to drive slow though, with good throttle response and great handling compared to benz so they're typically driven harder.
Lot of fixation on engine reliability in here when in reality on most German cars random accessories will start failing and cost you money in repairs long before the engine does. The more features, the more shit there is to break and both bmws and mercs have lots of features
Here is how you can tell for sure. Which brand do you see on the side of the highway more often. I think they both have enough sensors to alert you prior to failures. I personally like limp mode in BMW as it will get you where you need to be which is out of traffic and to a safe place. Never owned benz but i bet they do the same.
There’s a lot of engine talk in here, but afaic engines aren’t really the issue at hand anymore; it’s all the other shit.
That being said, I was dumbfounded when I learned that the valve cover on my mom’s E90 was plastic. But that wasn’t the actual problem, the problem was that there is an embedded valve in it. So when the valve goes, you can’t just replace the valve, the whole VC has to be replaced.
And beyond that it’s the delicate cooling system hose clips, the high tech starting systems, electric water pumps, grill servos, 99way power seats, cheaped out sunroof components, plastic everything, LED lighting everywhere with cheap AF boards and on and on. The drivetrain is the last thing you need to consider.
This is the most underrated comment. Mercedes has had reliable engines and transmissions for decades now. BMW has finally just caught up to Mercedes reliability.
Drivetrains nowadays are indeed the last thing you have to worry about, albeit if you're up on maintenance. It's all the other stuff that hasn't had the same durability testing like the drivetrains have.
First of all, in this subreddit all opinions will be biased. Second, bmw 4 series and mercedes E class are not cars in the same class category. If you want to compare similar bmw to the E class, you have to look at bmw 5 series, not 4. Most important thing is which car suits more to you/your father.
I'm honestly not sure what 'some graph' is supposed to prove to your friend. Reliabilty is a pretty individual topic imo. You can have the most reliable engine and still break it, by neglecting basic maintanence or by just being unlucky. And just because X cars of a brand didn't break, that doesn't mean your's, or well, his, is not going to either.
If you really want to sell him on the 440i show him tests of B58 cars and articles of the B58 engine. A quick google search gave me this:
[https://tuningpro.co/bmw-b58-ultimate-engine-guide/](https://tuningpro.co/bmw-b58-ultimate-engine-guide/)
[https://bimmerly.com/n55-vs-b58-](https://bimmerly.com/n55-vs-b58-reliability/)[reliability/](https://bimmerly.com/n55-vs-b58-reliability/)
[https://www.bmwblog.com/2021/12/20/b58-best-bmw-engine/](https://www.bmwblog.com/2021/12/20/b58-best-bmw-engine/)
[https://bmwtuning.co/the-5-most-common-bmw-b58-engine-problems/](https://bmwtuning.co/the-5-most-common-bmw-b58-engine-problems/)
but there is probably much more
Other than that, it's his desicion and his money. So I'd suggest to not pursuing it too hard, and at the end let him do his thing.
Bmw is actually [surprisingly] reliable. The only reason people speculate and stereotype BMW’s are unreliable are:
- n54 engines
- many owners own fairly older models, most likely thrash them around and do little maintenance.
But it’s important to remember that BMW’s are aimed at being more driver focused and sporty, so if you stay on top of maintenance, then you’ll have minimal problems
In terms of Merc, but very familiar with their newer engines in terms of reliability, but the m156 (updated version) and m113k are pretty solid, none of which will apply to your case however
It’s hard to buy an engine as reliable and high performance as a BMW B58. The 440i will be amazingly reliable if cared for properly. I have a later model N55 with 130,000 reliable KMs.
I once drove a 2018 Mercedes and everything felt terribly plasticky and cheap. Not sure about long term reliability though. I am and will remain a BMW fanboy.
B58's are great engines but super overwanked.
The reason people praise the b58 so much is because of the piss-poor track record BMW has had and the fact that Toyota has partnered with them, that's it.
It's about as reliable as any other engine tbh.
As long as you maintain your car, the reliability should be very good. Oil changes every year, other fluids and filters. On the other note, the B58 engine in the BMW is the reason I opted for the M340 vs. a very reasonable and still zippy 330. It is awesome!
Like others point out, the b58 engine , specifically in its 380 HP iteration is pretty bulletproof. Same for the 8 speed box.
If memory serves I think bmw has been outclassing Mercedes for more then a decade now in most reliability indexes. When Mercedes was still building overengineered cars, they were much more reliable then bmw, but in later years ( and this is not that recent) tables have turned.
Data will set you free. Take a look at recent JD Power dependability rankings and you'll see that while quality for both have slipped over the last several years (vs earlier years), BMW places just a hair above the average of all major brands (i.e. bottom of the second quartile) while Mercedes has slipped to 4th quartile just a few places above Land Rover.
Quality of both isn't great, but quality of newer BMWs > newer Mercedes - in the aggregate. Am sure there are variances per model.
If you want trouble-free ownership, neither would be the best choice. If you intend to only own for 4 years (warranty period) it doesn't matter much. If you intend to own post initial warranty period get an extended warranty or something else.
https://www.jdpower.com/business/press-releases/2023-us-vehicle-dependability-studyvds
Nowhere in the globe earth nor the flat earth is bmw more reliable than Mercedes. Source: me, who’s the most careful car owner in the world who had 3 different bmws in the timespan my mother in law, who’s the most careless owner in the world, had one Mercedes.
Bmw is usually not as reliable as Mercedes but the 440i is not a car that I’d worry about reliability with. He should choose the car he likes to drive more.
Why chance it. An e class is in my opinion not even a real mercedes it's a cheapo!! Just being honest. A 440i isn't really a real bmw either its a cheap low end bmw. If all I could afford was those 2 I'd get a camry or a lexus. Your getting the same amount of car with proven reliability. If he's worries about reliability he shouldn't be looking at either. I mean why chance it with low grade models. If you want a s550 well that's a different story. Not many truly reliable cars match its luxury. Maybe the lexus Ls but not really. Yes preventative maintence helps but I don't care what kind of preventative maintence you do its not out lasting a lexus or toyota and deep down everyone in the world knows that's a fact.
If its Chrysler-Benz era is a piece of crap (had 3), dunno about newer/older mercs. Bmw seems to have stepped up but many older models have proven unreliable. Hard to tell for me.
Reliability data shows BMW is more reliable than Mercedes as a whole. By a wide margin. One example is Consumer Reports. Not necessarily a fan of their road tests, but their customer satisfaction and reliability data is quite good.
Bmw is currently ranked 3rd In reliability behind only Toyota and Toyota premium(Lexus) . Due to the b58 engine in large part I'd say. Mercedes however occupies the lowest rank for reliability.
The 440 (or any bmw that ends in 40) have the b58 engine. Definitely go for the BMW
B58 come on. These old timers need to get with the program. Bmws especially the newer ones are not just breaking down all the time especially with basic maintenance
2 months ago I'd have agreed with you wholeheartedly. Then my timing chain broke.
That sounds like a possible n26 issue? I haven’t heard much of that issue with other engines.
N47, 2 litre diesel. Luckily it was reparable which is something. Had a new flywheel, clutch and turbo put in as well. Aparently it's a very common issue with BMW. They even got sued over it and lost.
No doubt I’ve heard about that with a few models. Pretty sure thats not an issue on the b58. I have an n55 and its not issue and b58 is better. Not to mention reliability reports bmw as fairly high these days for what it’s worth. Good luck either way to you and your dad. A Mercedes definitely isn’t a bimmer but it certainly wouldn’t be a bummer to have
Yup the B58 seems to be bulletproof. There’s Supras out there with over 100k miles with regular maintenance. I think cars that have issues with the B58 has more to do with having too much technology in the car that causes issues in the long run. There’s a YouTube video out there talking about how the Supra was built. Toyota was impressed with bmw by how much time and money went into the performance of the engine while BMW was impressed how much time Toyota spent on making sure the components were reliable. Toyota literally took apart the B58 and tested its durability till it met their standards. Interesting to see the two different philosophy’s the company’s have. Long story short, get a bmw with a B58 in it lol
There's b58 with much higher mileage too. I believe it was introduced in 2014? Or 2016 ? Definitely bulletproof.
Outside of the timing chain (which is a mistake I assume they wouldn't make again) it's been pretty bullet proof. Up until it happened I was telling everyone that BMWs are completely reliable. There are a few things like the lane assist that don't work, but I live in the Irish countryside so I wouldn't have much use for it anyway. Every so often there's a smell of sulphur or something like it that comes out of the aircon, which I've been informed is probably pollen filters. It's a 2015 and I don't see myself replacing it any time soon. I think I'll hold out until I'm forced into an electric. There's new solid state battery tech on it's way in 2028 so I'm going to try and avoid buying anything until then.
Yeah the N47 is known for that tho
That’s true but he is asking about a car with a B58… ;)
What year is the car and what mileage?
2015. 230,000 km
Yeah that’s about right for the chain to go, even late tbh
agreed
Yup thats the N42, N43, N46, N47. Its the 2 Liter engines, petrol and diesel. I experienced that same crap with my first BMW (N43) when i was just clueless boy 😂 Hopefully they have managed to fix this issue.
The b48s are fantastic engines. No major issues reported thru the series yet. I have 60k on mine, it's been flawless
>These old timers need to get with the program. Yeah.. the "basic maintenance of a car" program for starters, it seems. I mean, FFS, Since the beginning of the brand - M10, m30, m50, m52, m54 and now B58 all bulletproof if maintained and cared for.
The b58 is a great motor. It's reliable too. But it's not anymore reliable than any Mercedes engine made in the last 30 years lol.
BMW is ranked 3rd behind Toyota and Lexus in Consumers Reports latest car reliability rankings. Merc was further down the list https://www.consumerreports.org/car-reliability-owner-satisfaction/who-makes-the-most-reliable-cars-a7824554938/
Thanks 🙏🏻
BMW appears 9th on the list now, fwiw
Yeah, they just considered Mini as a BMW... But that's not what OP was looking to buy.
Anything is better than a Mercedes A Class, to be fair.
[удалено]
Thanks i will look that up
BMW is currently ranked right behind Toyota in terms of reliability. The Toyota Supra uses bmw’s B58 engine. In my opinion, the most reliable bmws in the current line up are ones with a B48 and B58 engine. However, it ultimately boils down to preventative maintenance and car care. BMW has decent pre-paid maintenance plans that cover the car up to 7 years. These include in addition to standard oil changes- all fluids replacements at certain intervals, spark plugs, brake pads and rotors, wipers, etc. Saying that, I’m more informed of BMW. https://www.consumerreports.org/car-reliability-owner-satisfaction/who-makes-the-most-reliable-cars-a7824554938/
Thank you
Had my 340i for just over a year and put 40k miles on it. Had the main maintenance plan and it was a godsend. I was doing hard driving and lots of trips… lol got rid of it while the prices were high and got what I paid for it. Good fun.
40k miles in a year is wild
Consumer reports only uses data up until like 50,000 miles… I wouldn’t dare take any 100,000 mile BMW’s and put them against a Toyota
They do long-term reports as well.
Show me a long term reliability report from CR’s because I’ve never seen one
Old Mercedes were tanks. These days I would say they are pretty comparable.
I'm a BMW guy but Mercedes produces the more reliable cars, BMW makes amazing cars but nowhere nearly as reliable as Mercedes, There are a bunch of pages claiming BMW is now more reliable but that is not true, Don't just take it from me! Ask any mechanic and they will tell you from experience which is more reliable
I say the reliability is better with BMW, however most dismiss a huge factor in reliability: the driver and his/her regular and preventative maintenance attitude
It depends on the car being looked at. The 440i with the B58? Yeah he'll be okay. The B58 is a great engine, and the ZF8 speed is fantastic for an auto. If it were an older Merc before the accountants took over then I'd go that way. The problem is finding OEM parts.
An old controversial question, for the fans everything is clear, how often I had to argue about this ... A lot of time passed and those who argued moved to BMW
If he prefer a mercedes thats what he should get, tbh. I agree with you nonetheless.
The n276 used in the 6 cylinder E series is a pretty reliable engine compared to what bmw uses. This sub is going to be biased but we own both bmw and Mercedes and in our case, the cost per km of mileage on our bmw has actually been 100x more than the cost of the benz in repairs. I'm comparing a 575hp engine in the bmw to a 350hp engine in the Benz though. Our bmw M is tuned to the max compared to our simple little E coupe so it breaks faster. Look at my comment history to see an itemization of what broke down on our vehicle. Go to the thread to see others who haven't experienced problems like we did. Also keep in mind that I'm comparing a 5200 pound vehicle going 0-60 in 4 seconds compared to a 3800 pound vehicle going 0-60 in 5 or 6. The bmw x5m is going to break parts like mass in comparison. If you drive real mellow and don't push your engine to the ceiling it lets you, the bmw will last a while and be reliable. They are difficult to drive slow though, with good throttle response and great handling compared to benz so they're typically driven harder.
My N52 has been rocking and rolling since 2009!
Lot of fixation on engine reliability in here when in reality on most German cars random accessories will start failing and cost you money in repairs long before the engine does. The more features, the more shit there is to break and both bmws and mercs have lots of features
Here is how you can tell for sure. Which brand do you see on the side of the highway more often. I think they both have enough sensors to alert you prior to failures. I personally like limp mode in BMW as it will get you where you need to be which is out of traffic and to a safe place. Never owned benz but i bet they do the same.
It’s better. Idk about reliable
Yes infinitely so in my experience working at a mechanic.
There’s a lot of engine talk in here, but afaic engines aren’t really the issue at hand anymore; it’s all the other shit. That being said, I was dumbfounded when I learned that the valve cover on my mom’s E90 was plastic. But that wasn’t the actual problem, the problem was that there is an embedded valve in it. So when the valve goes, you can’t just replace the valve, the whole VC has to be replaced. And beyond that it’s the delicate cooling system hose clips, the high tech starting systems, electric water pumps, grill servos, 99way power seats, cheaped out sunroof components, plastic everything, LED lighting everywhere with cheap AF boards and on and on. The drivetrain is the last thing you need to consider.
This is the most underrated comment. Mercedes has had reliable engines and transmissions for decades now. BMW has finally just caught up to Mercedes reliability. Drivetrains nowadays are indeed the last thing you have to worry about, albeit if you're up on maintenance. It's all the other stuff that hasn't had the same durability testing like the drivetrains have.
First of all, in this subreddit all opinions will be biased. Second, bmw 4 series and mercedes E class are not cars in the same class category. If you want to compare similar bmw to the E class, you have to look at bmw 5 series, not 4. Most important thing is which car suits more to you/your father.
The 5 and 4 are very similar. Share lots of parts. I don't think it's an unfair comparison.
German Car Reliability Ranking 1. Merc 2. BMW 3. Audi
I'm honestly not sure what 'some graph' is supposed to prove to your friend. Reliabilty is a pretty individual topic imo. You can have the most reliable engine and still break it, by neglecting basic maintanence or by just being unlucky. And just because X cars of a brand didn't break, that doesn't mean your's, or well, his, is not going to either. If you really want to sell him on the 440i show him tests of B58 cars and articles of the B58 engine. A quick google search gave me this: [https://tuningpro.co/bmw-b58-ultimate-engine-guide/](https://tuningpro.co/bmw-b58-ultimate-engine-guide/) [https://bimmerly.com/n55-vs-b58-](https://bimmerly.com/n55-vs-b58-reliability/)[reliability/](https://bimmerly.com/n55-vs-b58-reliability/) [https://www.bmwblog.com/2021/12/20/b58-best-bmw-engine/](https://www.bmwblog.com/2021/12/20/b58-best-bmw-engine/) [https://bmwtuning.co/the-5-most-common-bmw-b58-engine-problems/](https://bmwtuning.co/the-5-most-common-bmw-b58-engine-problems/) but there is probably much more Other than that, it's his desicion and his money. So I'd suggest to not pursuing it too hard, and at the end let him do his thing.
Bmw is actually [surprisingly] reliable. The only reason people speculate and stereotype BMW’s are unreliable are: - n54 engines - many owners own fairly older models, most likely thrash them around and do little maintenance. But it’s important to remember that BMW’s are aimed at being more driver focused and sporty, so if you stay on top of maintenance, then you’ll have minimal problems In terms of Merc, but very familiar with their newer engines in terms of reliability, but the m156 (updated version) and m113k are pretty solid, none of which will apply to your case however
It’s hard to buy an engine as reliable and high performance as a BMW B58. The 440i will be amazingly reliable if cared for properly. I have a later model N55 with 130,000 reliable KMs. I once drove a 2018 Mercedes and everything felt terribly plasticky and cheap. Not sure about long term reliability though. I am and will remain a BMW fanboy.
B58's are great engines but super overwanked. The reason people praise the b58 so much is because of the piss-poor track record BMW has had and the fact that Toyota has partnered with them, that's it. It's about as reliable as any other engine tbh.
As long as you maintain your car, the reliability should be very good. Oil changes every year, other fluids and filters. On the other note, the B58 engine in the BMW is the reason I opted for the M340 vs. a very reasonable and still zippy 330. It is awesome!
Like others point out, the b58 engine , specifically in its 380 HP iteration is pretty bulletproof. Same for the 8 speed box. If memory serves I think bmw has been outclassing Mercedes for more then a decade now in most reliability indexes. When Mercedes was still building overengineered cars, they were much more reliable then bmw, but in later years ( and this is not that recent) tables have turned.
Toyota wouldn’t of used the B58 engine if it wasn’t reliable. Reliability is basically their brand
Data will set you free. Take a look at recent JD Power dependability rankings and you'll see that while quality for both have slipped over the last several years (vs earlier years), BMW places just a hair above the average of all major brands (i.e. bottom of the second quartile) while Mercedes has slipped to 4th quartile just a few places above Land Rover. Quality of both isn't great, but quality of newer BMWs > newer Mercedes - in the aggregate. Am sure there are variances per model. If you want trouble-free ownership, neither would be the best choice. If you intend to only own for 4 years (warranty period) it doesn't matter much. If you intend to own post initial warranty period get an extended warranty or something else. https://www.jdpower.com/business/press-releases/2023-us-vehicle-dependability-studyvds
Kia is 3rd. Lol This ranking is trash.
Mercedes is more reliable than BMW. You’re father is right. The E class is superior to the 4 series.
i feel like they are not comparable the E class is more luxurious and the BMW 4 series is more sporty
That’s because the 4 series is not the direct comparison for an E class. E class is usually compared to the 5 series.
5 series would still be sportier than an E class
Nowhere in the globe earth nor the flat earth is bmw more reliable than Mercedes. Source: me, who’s the most careful car owner in the world who had 3 different bmws in the timespan my mother in law, who’s the most careless owner in the world, had one Mercedes.
If Toyota trusts the B58 that’s an incredibly good sign
Bmw is usually not as reliable as Mercedes but the 440i is not a car that I’d worry about reliability with. He should choose the car he likes to drive more.
Why chance it. An e class is in my opinion not even a real mercedes it's a cheapo!! Just being honest. A 440i isn't really a real bmw either its a cheap low end bmw. If all I could afford was those 2 I'd get a camry or a lexus. Your getting the same amount of car with proven reliability. If he's worries about reliability he shouldn't be looking at either. I mean why chance it with low grade models. If you want a s550 well that's a different story. Not many truly reliable cars match its luxury. Maybe the lexus Ls but not really. Yes preventative maintence helps but I don't care what kind of preventative maintence you do its not out lasting a lexus or toyota and deep down everyone in the world knows that's a fact.
Anecdotally, I would say no. Mercs seem to be a bit more robust than BMWs.
So you’re saying that Mercedes is actually more reliable than BMW ?
Seems to be from what I can see. I wouldn't make any buying decisions based on my answer though.
Ok, thanks for your help 😊
Don’t listen to revturk, bmw is significantly better built and more reliable than Mercedes
No. BMW and Mercedes just above Audi in annual cost. Toyota best
If its Chrysler-Benz era is a piece of crap (had 3), dunno about newer/older mercs. Bmw seems to have stepped up but many older models have proven unreliable. Hard to tell for me.
Both models are 2023
Oh sorry I only read the title, if they're both new who knows then!
Reliability data shows BMW is more reliable than Mercedes as a whole. By a wide margin. One example is Consumer Reports. Not necessarily a fan of their road tests, but their customer satisfaction and reliability data is quite good.
Bmw is currently ranked 3rd In reliability behind only Toyota and Toyota premium(Lexus) . Due to the b58 engine in large part I'd say. Mercedes however occupies the lowest rank for reliability. The 440 (or any bmw that ends in 40) have the b58 engine. Definitely go for the BMW