10. Volvo 850 T-5R (1995)
The Volvo 850 T-5R challenged perceptions of Volvo as solely a maker of safe, practical vehicles, offering enthusiasts a surprising dose of performance in both wagon and sedan forms. Powered by a turbocharged 2.3-liter five-cylinder engine, developed with input from Porsche, the T-5R produced an impressive 243 horsepower. This power enabled it to sprint from 0 to 60 mph in just 6.5 seconds, placing it in direct competition with revered sports sedans like the BMW M3 and Mercedes-Benz C36 AMG. With its boxy styling and unassuming appearance, the 850 T-5R was the ultimate sleeper performance car of its time.
Source: MotorTrend