Thread: BMW N63 engine
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      12-30-2019, 10:57 AM   #10
zhangyi17
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Drives: BMW X5
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Originally Posted by claykin View Post
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Originally Posted by zhangyi17 View Post
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Originally Posted by LexxM3 View Post
My point of view: you should never own a modern BMW out of warranty. So get an extended warranty and enjoy the car for 7 years less a day.
Coming from a Honda owner experience, maybe I need to lower my expectations about the reliability of BMW? Trade off between reliability and power, would the N55 in the 40i be a more balanced than the N63?
40i uses the B58B30M1 which is second gen version of the B58 engine.

50i uses the N63TU3 (slightly different variants in 50i and M50i). This is third generation of the engine. I wouldn't be concerned about problems with the earlier versions.
This guy talks specifically about the problem with this latest generation of N63 engine. He names it as the most unreliable BMW engine

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