BMW M3 is simply the premier 4-seater sport coupe or convertible on the road today. When it comes to performance, handling and communication between vehicle and driver, this vehicle is truly in another class.
The "M" indicates that this vehicle comes from BMW's Motorsports performance division. What they do is take a given vehicle (in this case a 3-Series)
and tweak an already impressive engine to increase output, upgrade the suspension to get even more agility in the handling, add more powerful brakes and a specialized limited-slip rear differential, and then toss in some additional sporty design elements (both exterior and interior).