BMW E30 M3
When most people think of BMW performance, they think of the “M” class cars. But, among the dozens of models that wore the M badge, the M3 E30 is the most iconic. But the heart of the E30 M3 was the S14 straight four engine with 2.3-liters of displacement.
Although it started with 195 HP, later the output was 215 HP. Since the car was light, the performance and road-holding were great. In fact, the M3 turned out to be the most successful racing car in touring car racing history.