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Not fixedwheelnut, but his advice to me was N47 engines are crap and prone to problems.
M47 more reliable. Swirl flap failure much more common on 6 cylinder (m57) vs 4 cylinder, and he said that he hadn't seen many m47 engines with swirl flap failure.
Also, from what I've read, the manuals are more reliable than the autos.
Nef-
I don't find N47 engine on E46, maybe a typo error?
So the M47 diesel engine is a good first lead then, cheers!
if anyone has also other inputs that would be great :) -
@paulbiche pretty much, I am not a fan of 4 cylinder engines after the M44 all N series engines seem to suffer chain issues of some sort, Valvetronic engines are also prone to finger wear in the valve train that can be expensive.
The M54 6 cyl is a reliable lump, they can suffer with water pump and vanos trouble but other than that pretty good.Hackengineering do a good modified vanos service with improved machined components if ever you do get trouble.
https://www.hackengineering.co.uk/
paulbiche
Fixedwheelnut
question to @Fixedwheelnut (who I remember has been in touch with BMW) and other BMW users/experts, what would be the best engine for the E46 for petrol and diesel?
Currently contemplating an E46 purchase for the next car, not looking for power at all just looking for best reliability in the E46 range?