There are plenty of BMW M3 coupes driving around the web, but the newly announced sedan is a much rarer bird, indeed. The four-door M3 is mechanically the same as its coupe sibling, with its 4.0L V8 engine and six speed manual transmission. And from the A-pillar forward, the two Ms are nearly identical. The pair of souped-up 3-Series also have a lot of differences, starting with the door count and ending with the sedan's steel rather than carbon fiber roof, the latter of which helps the four-door tip the scales at over 3,500 lbs.
[Source: Motor Authority]