Going green has never been easier. Some of the most fuel-efficient vehicles on the road are brand-new this year, and by our ratings, they're scoring better than ever in their lifetimes.
But when it comes down to purchasing one of the big green mainstays, which one's better for you—the new Toyota Prius, or the latest Chevrolet Volt?
By the numbers here, the Volt rates ahead of the Prius. Both have been rated with our new scoring system, and the Volt is our winner based on its looks and refinement. The Prius makes available great safety features at a low cost, and is still the most efficient vehicle without a cord, but the differences go deeper than that. (Read more about how we rate cars.)
Now entering its fourth generation, the legendary status of the Toyota Prius hybrid is completely established. It remains the most highly-rated car for fuel efficiency sold in the U.S. without a plug—this year at either 52 or 56 miles per gallon combined—and it’s by far the most prolific hybrid in the world, with more than 3 million sold.
The range-extended electric Chevy Volt is also all-new this year, entering its second generation. It now lets its drivers cover about 50 miles purely on electric power from the grid, used to recharge its battery, after which it too becomes a conventional hybrid—with a rated fuel efficiency of 42 mpg.
In its early years, the Volt drew long-time Prius owners out of their cars—indicating that the hybrid-electric vehicle is no longer the pinnacle of technology chic it was when it launched. The Volt offered not only hybrid-level fuel economy (or close) but the superior driving experience of an electric car without any of the range anxiety of a battery-only vehicle.
While the Prius family also includes a smaller Prius C subcompact and a larger Prius V wagon, it’s the new five-door Prius Liftback that sells the best against the Volt. (We cover the new Prius Prime separately.)
For the first time, the Prius Liftback offers two different battery packs. The base Prius Two sticks with the well-known and cheaper nickel-metal-hydride pack, while the Prius Three and higher models go with a smaller, lighter lithium-ion pack. For gas mileage, there’s the Prius Two Eco model, which is rated at 56 mpg combined. All other Prius models come in at 52 mpg combined.
Like all Priuses before, the car gets at most a mile of electric range, when driven gently at low speeds. Otherwise, the electric motor recaptures otherwise wasted energy and assists the highly efficient gasoline engine by adding torque so fuel consumption is reducing.
The Volt’s 42 mpg combined is lower than that, obviously, but its 18.4-kilowatt-hour battery is rated at 53 miles of electric range for 2016—and our tests indicate that’s a realistic number, at least in temperate climates. Once the pack is depleted, the Volt's gasoline engine switches on as needed and the car operates as a conventional hybrid until its pack is recharged again.
2016 Toyota Prius Two EcoEnlarge Photo
2016 Toyota Prius VEnlarge Photo
2016 Toyota Prius VEnlarge Photo
Which car is better at saving gasoline—and money? If you do 150 miles a day, the Prius wins. If you do 50 miles a day, the Volt wins. If you're somewhere in the middle, the math gets complex. Volt owner who covers less than 50 miles a day and recharges every night may not switch on his engine for weeks at a time. Owners may easily record "gas mileage" of 100 to 400 miles per gallon under those circumstances.