However, the downside is usually that, since the engine is held at peak power as you speed up (Usually at greater revs), CVT gearboxes will make cars and trucks fairly noisy, especially if the motor is somewhat weedy and really should be revved tougher to tug you along. Lay Shaft: https://tituslvycc.anchor-blog.com/14459613/not-known-facts-about-gearbox-auto