2015 Toyota Prius vs. Its Competition

John Voelcker

The 2015 Toyota Prius continues its reign as the highest-selling hybrid and the most fuel-efficient car without a plug on sale in the U.S.

The rival Ford C-Max has now had its gas mileage ratings reduced twice, from an original 47 mpg to 40 mpg today; while it's more comfortable, luxurious, and powerful, its sales have not held up.

The Prius consistently returns 45 to 50 mpg in real-world use for most drivers, and the only non-Prius hybrid we think may come close to that is the Honda Accord Hybrid, which is in somewhat limited supply.

It's hard to distinguish the hybrid Accord from a regular one, and of course it's a four-door sedan rather than a five-door hatchback, but its real-world mileage was impressive on road tests.

Prius Liftback shoppers may want to consider the roomier Prius V wagon if more space for people and stuff is needed; it's rated at 42 mpg combined.

Smaller but more luxurious, and definitely more fun to drive, is the Lexus CT 200h compact hybrid hatchback.

Finally, if your miles are mostly on the highway, check out Volkswagen's TDI diesels--either the brand-new 2015 Golf hatchback or the lightly revised Jetta four-door compact sedan.

Both are more engaging to drive, and their highway fuel economy may match that of the Prius.