Engines get mean and green

1980 average vehicle

104.6hp

3,493 lb

16.9mpg

17.2 sec. 0 to 60 acceleration

2015 average vehicle

233.2hp

4,212 lb

23.4mpg

8.6 sec. 0 to 60 acceleration

123% horsepower growth 1985-2015

39.1% fuel economy growth 1985-2015

V-8 horsepower

1980: 145.5hp

1985: 157.5hp

1990: 185.2hp

1995: 209.1hp

2000: 248.2hp

2005: 288.6hp

2010: 331.2hp

2015: 375.6hp

4-cylinder horsepower

1980: 78.1hp

1985: 95.3hp

1990: 106.4hp

1995: 116.2hp

2000: 135.9hp

2005: 153.9hp

2010: 161.4hp

2015: 171.4hp

Source: U.S. Environmental Protection Agency