Every year, the American Council for an Energy-Efficient Economy (ACEEE) releases ratings for all the vehicles on sale based on how green they are.
This is the 21st year for the list, and as part of its overall ratings, it declares a Greenest and Meanest vehicle. Sitting atop the greenest list, for the second-straight year, is the Hyundai Ioniq Electric.
The list for the least green cars has a Mercedes-Benz G550 sitting atop it. The G-Wagon actually occupies all top-three spots in all three variants of the vehicle (G550, G63, G65). Those are followed by the Jeep Grand Cherokee Trackhawk with 707 horsepower and a supercharged V8.

The worst-performing pickup truck is the Toyota Tundra. Several other big Toyotas make the list. The family-friendly Durango SRT crossover with 475 horsepower comes in at number 12.

SEE ALSO: 2018 Hyundai Ioniq Electric Review – Video

On the green side, the aforementioned Ioniq Electric tops the list. It’s followed by the Mercedes-Benz Smart Fortwo Electric Drive and the BMW i3 BEV. In fourth place is the Tesla Model 3 with the long-range battery pack. The Bolt EV is sixth on the list. The Toyota Prius Eco hybrid sits at number eight.
The entire green list is rounded out with the Chevrolet Volt in 12th place.
ACEEE has some recommendations if you’re looking for a greener vehicle. In addition to the greenest and meanest list, it provides recommendations in various categories.
For a midsize car, it recommend the new Camry Hybrid. For a large car, it likes the C-MAX Hybrid from Ford. The Nissan Rogue Hybrid is its pick for small SUV, and the hybrid Lexus RX 450h is its choice for large SUV.
It also provides a midsize pickup and a full size pickup option. For the midsize the Colorado and Canyon with the diesel gets the nod. For full size the F-150 base with the 2.7L EcoBoost wins the day.