My old e46 m3 was a Japanese import.
Owned that one for 11 years. Needed the usual M3 servicing. Wasn’t any better or any worse that my NZ new counterparts owned. Brought it at 48,000km and sold it at 189,000km
My F80 M3 is a UK import. Seems normal, done 22,000kms
E36s were a different story
NZ New 325i , no issues, just needed servicing to 220,000 km
Imported 328i , auto transmission issues at 120,000 km
Imported 318i aka the lemon. Auto transmission issues , most things actually. Suspect the dealer had had the speedo reversed and the car was built by British Leyland workers on a Friday after the pub.