[kayodelycaon]

For most Toyota hybrids they use a single planetary gear set to combine electric motors and a gas engine into a single unit. That's the entire transmission. It's far more efficient than bolting a generator on an electric car.

For climate control, they are nearly identical to a gas Toyota.

[mrguyorama]

The funniest part is that the way Toyota hybrid powertrains work, if either the ICE or electric motor doesn't work, you cannot go anywhere. It's LESS systemically reliable than either a purely ICE or purely electric powertrain, and yet STILL Toyota hybrids are some of the most reliable cars you can buy.

Their engineering is just that insanely conservative. They just make giant, absurdly understressed engines. You can pull a 2.5L 4cyl engine out of a Camry, designed to make 180 horsepower, replace only a few components, and make 400hp with the reliability you would normally expect from an engine built for endurance racing. They are super popular in drift racing leagues.