#Bottom10

It was nearly 15 years ago that Honda was touting their magic number — 118.5 hp/L. This was the specific output for the U.S.-spec Honda S2000 powered by a high-strung, 237-horsepower, 2-liter engine and it was a marvel of engineering, trumping the Viper and many other more expensive machines.

Fast forward to today and there are only a few naturally aspirated vehicles that top Honda’s claim to fame, but many that easily beat it with some form of forced induction. Yet, even with this plethora of new high-output, small-displacement engines, the average specific output of gasoline and flex fuel vehicles in the United States is still below the record set by Honda back in 1999.