V - Variable valve timing

Monday, June 05, 2006

Variable valve timing - Valves let fuel and air in and out of the engine's cylinders. In most cars, the timing of the valves' opening is fixed to offer a fair compromise across the whole rev range. VVT, however, adjusts the timing with the speed of the engine so that it is always working at its peak efficiency.

Glossary

Want to know the difference between your APRs and your PCPs? Our Glossary will guide you through the minefield of car-buying terms.