More often than not, car transmissions have multiple speeds, or gears. How can you tell if your car has a six-speed or an eight-speed transmission?

Information about GM's 8-speed 8L90 M5U Hydra-Matic transmission, including details, specifications, vehicle applications, and more.

Information about GM's 8-speed 8L45 M5N Hydra-Matic transmission, including details, specifications, vehicle applications, and more.

The best automated manual transmissions aren't good enough for purists who claim there aren't any manual transmission vehicles available anymore, but that's simply not true. Read on to check out ...

The new eight-speed shifter also switches to a mechanical release button, giving a more traditional feel to latest iteration of this eight-speed transmission shifter.

Manual transmissions may be dying, but no one told these automakers. Here are the best cars that you can only get with a gearbox that you have to work yourself.

Car and Driver presents ZF s 8-Speed Automatic Transmission. Read expert vehicle reviews and award-winning feature content at Car and Driver.