GoAuto glossary

Variable Valve Timing (vvt)

A system that alters when the valves open and close, depending on engine speed, so the engine is not compromised by being tuned to perform best at either high revs or low revs.

The result is better performance, flexibility and fuel economy.

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