I've owned both the N55 and now N20...only reason I have the N20 is the wagon...otherwise I would be in another straight 6...go bigger, fuel mileage difference isn't that noticeable for everyday around town driving.
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2018 F80 M3 6MT (current)
2014 F31 328i Touring (sold)
2008 E92 M3 6MT (sold)
2011 E90 335xi (lease up)
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