For Carmakers, 40 MPG Is the New 30

Toughened fuel economy standards and engineering know-how are making 40 miles per gallon on the highway the new 30.

It wasn't so long ago that boasting 30 mpg on the highway for small cars seemed like enough to paint a car "green." But many new vehicles are hitting 40 mpg and beyond without resorting to hybrid or electric power.

The new Ford Fiesta achieves 40 mpg on the highway without a hybrid powertrain. Joining the "40 mpg Club" for their performance on the highway are the new Ford Focus (40 mpg); Hyundai Elantra (40 mpg); Chevy Cruze Eco (42 mpg, pictured) and Chevy Sonic (40 mph).

And there are more on the way. Toyota will launch the Scion iQ later this year, which will get north of 40 mpg.