12-05-2016, 09:40 PM | #1 |
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Let's talk about reliable engines
What are in your opinion the most reliable diesel and petrol engines of BMW F30?
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12-06-2016, 03:08 AM | #3 | |
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It is a big 'if' for the N47. The used market will be very nervous of the N47 as mileage is added, due to the poor track record of N47 timing chain failures. |
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12-06-2016, 06:08 AM | #4 |
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The 3 litre 6 cyl diesel in my own experience.
Have driven it in 3 cars, only totalling 100,000 miles admittedly. Not one engine fault - only issues I've had have been with TPMS and internal lighting, all fixed under warranty of course
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12-06-2016, 06:48 AM | #5 |
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From a sample of one, my engine (N57) is quite reliable.
It has been tuned for the past 30k KM and I have no issues yet (knock on wood)
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12-07-2016, 04:21 PM | #6 |
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anything turbo in general will be less reliable than naturally aspirate counterparts. alot of long term reliability depends on how the car was driven for the first 3000 miles. if you refrain from revving past 3-4K for this period, the piston rings and what-not will seat properly and ensure you dont burn a drop of oil down the road. this ensures that your engine lasts as long as possible. although this has nothing to do with the f30, the most reliable engines BMW every built was any inline 6 in the e46 or earlier. these engines are alot easier to work on compared to the newer stuff as well. when the new age of BMW engines was introduced (N52+) lots of complex electronics were added. IMO, the most reliable modern BMW engine is probably the N52.
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12-10-2016, 04:50 PM | #8 | |
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12-10-2016, 10:56 PM | #9 |
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Yes they said try not to rev past 4K for first 1K or so miles. But that's pretty much impossible to do once I merge onto the autobahn.
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12-10-2016, 11:10 PM | #10 | |
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break-in procedure is NOT 1000miles for any car. engine is not fully sealed until 3000miles. |
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12-10-2016, 11:12 PM | #11 | |
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12-11-2016, 08:13 AM | #12 |
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That's true but in general modern cars are very reliable mechanically. Turbo or NA. I'm not sure why the OP asked this question but if reliability is a factor in choosing a new car, I wouldn't hesitate to buy a turbocharged car. In fact my last two were. First was a 2014 328i which was dead reliable over 65,000 miles which is too short a term for true long term reliability. And I didn't give a second thought to the turbo engine on my current VW GTI. I bought this car and plan on driving it at least 100,000 miles, possibly 150,000 or more.
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12-11-2016, 09:41 AM | #13 | |
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12-11-2016, 10:49 AM | #14 | |
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I agree with n52 being my pick for most reliable modern BMW engine. Less stuff that can go wrong without turbos. N55 does seem reliable but the oldest versions of them are just exiting warranty now so we don't really know. Same with the s55. So far so good but too new to say for sure. |
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12-11-2016, 10:55 AM | #15 | |
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my friend has a 2012 acura TL. him and his dad drive the absolute piss out of it. my friend said that for 100% his dad revved the shit out of it when new and it does not burn a single drop of 0w-20 oil 7000KM later. this whole thing is a tad confusing to me. if you shared in detail how you drove on the circuit, perhaps it will clear things up? thanks! |
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12-11-2016, 11:08 AM | #16 |
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This link is quite controversial http://mototuneusa.com/break_in_secrets.htm
I used that advice and there is in fact a section called "on the racetrack". Basically, it says to warm it up completely then go for it (similar to what your friend and his father did with their TL it sounds like) If you didn't warm up your Mazda complete before hammering on it, that could be a concern. You could also check for an oil leak (my previous z435 had several gaskets leaking minor amount of oil in first year of ownership). Edit: ask your dad to autox the Mazda with you rather than "borrowing" it to beat on it on the streets (aka street race it).... |
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12-12-2016, 01:52 PM | #17 | |
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12-12-2016, 03:09 PM | #19 | |
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12-12-2016, 03:10 PM | #20 |
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I've actually always thought how nice the n52 would be in the f30 as well.. agreed. what do you think of the n20? how does it compare to the n52 for you? ive actually never tried it before so im curious.
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12-12-2016, 05:23 PM | #21 | |
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I would gladly take a fuel economy hit and lose a few HP to have a smoother engine. It's not all about power. My favorite was the M54. |
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12-12-2016, 05:47 PM | #22 | |
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during real world driving, expect to see identical fuel economy figures between the N52 and N20 with their respective transmission choices. if you drive the n20 aggressively and on boost often (especially winding out past 5000rpm) the fuel economy will easily be worse. turbo engines get AWFUL fuel economy at high rpm's because the ECU dumps extra fuel into the engine under these conditions (run rich) in order to protect the engine from the immense heat. this is another reason why turbo engines tend to be less reliable. its alot of stress for the engine to be on boost all the time. |
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