The Enzo has a semi-automatic transmission (also known as the F1 gearbox) using paddles to control an automated shifting and clutch mechanism, with LED lights on the steering wheel telling the driver when to change gears. The gearbox has a shift time of just 150 milliseconds. The transmission was a first generation "clutchless" design from the late 1990s, and there have been complaints about its abrupt shifting.[5][7]