330i Which engine is the best/worst?
Hello, I'm after some advice please. I'm looking to buy a 330i E90 convertible (2006-2010 era) in the next week or so but understand their are different editions of the engine e.g. N53, N52 etc.
I wanted to know which is the best edition of the engine in terms of sound, economy, performance etc. and which one should be avoided?
Also how can I tell when I go to view a car which edition of the engine it is?
Thanks in advance and appreciate any further advice...
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