Without a doubt, it’s the M Series cars that make enthusiasts go ga-ga for BMW. Based on regular production series models, BMW’s M cars take performance to a new level, usually through a massaged engine, sport-tuned suspension, and other performance and cosmetic enhancements that turn something ordinary into something extraordinary. And of all the M Series models, it’s the M3 that really gets the enthusiast’s blood fired up. Using the standard 3 Series platform as a basis, the M3 takes everything the performance-minded driver loves about BMW’s entry-level model and turns the dial up to 11. This is the one that BMW chooses to run in competition, more often than not. And for good reason.
Source: Motor Trend