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The BMW M3 is a high-performance version of the BMW 3 Series, developed by BMW's in-house motorsport division, BMW M. M3 models have been derived from the 3-series, and sold with coupé, sedan and convertible body styles. Upgrades over the "standard" 3-Series automobiles include more powerful and responsive engines, improved handling/suspension/braking systems, aerodynamic body enhancements, and interior/exterior accents.

Based on the 1986 model year 3-Series, the first M3 was introduced with a 2.3 L I4. The engine design was based on various BMW parts: basic block layout from the M10 4 cylinder bored out and reinforced to similar specifications of the BMW M88 inline-6. The valve train and head architecture from BMW's M1 and, later, M6 inline-6 cylinder was adopted for aggressive breathing. it produced 192 hp. Evolution models (not sold in North America) continued with 2.3 liters but adopted revised exhaust-cam timing, increased compression along with the lack of a catalyst producing approximately 215 hp.