Every year Ward’s Auto takes a look at all the new cars and engines out there, and puts together a list of their favorite drivetrains. This year some old friends and new faces were on Ward’s 10 Best Engines of 2015 list, including an electric motor and hydrogen drivetrain.

The 127 kW/170 horsepower electric motor from the Car of the Year BMW i3 was listed alongside the 100-kW fuel cell from the Hyundai Tucson Fuel Cell. It’s not the first time either an electric motor has been chosen for Ward’s 10 Best Engines list, as the Fiat 500e was given the nod for its 83 kW motor last year, though the 691 horsepower motor from the Tesla Model S P85D was conspicuously absent. Perhaps next year?

The new three-cylinder MINI Cooper engine gave BMW its second spot on the list, while Chrysler got the nod twice with the 3.0 liter EcoDiesel in the Ram 1500 (again) and the Challenger Hellcat’s 707 horsepower supercharged V8. The three-cylinder Ford EcoBoost engine made its fourth appearance on the 10 Best list, and was joined by the Volkswagen 1.8 turbocharged four-cylinder (again), the Volvo 2.0 liter turbo from the V60, the 2.0 liter Boxer from the Subaru WRX, and the Chevy Corvette’s 6.2 liter V8 (also again).

Will there come a day when alternative fuel drivetrains dominate the Ward’s 10 Best Engines list? This writer thinks so.