GoAutoLogo
MENU

GoAuto glossary

Tachometer (tacho)

Also referred to as a rev-counter, it is the instrument that records the rate at which the engine’s crankshaft is rotating (revolutions per minute, or rpm) and therefore aids the driver in deciding when to change gears.

The tacho is generally located in the instrument panel next to the speedo and has a ‘redline’ that shows the manufacturer’s recommended maximum revs for the engine.

Glossary A to Z

Stuck on a word or some strange terminology?

Select the word in the list to become an automotive guru for your friends.

Select a term or phrase