CVT gearboxes can make a droning noise that holds continual, rather than rising or lowering with motor speed. This may be a little disconcerting for many drivers, and usually takes some receiving used to. Some brands have developed CVTs with ‘phase’ know-how to imitate the gears of a standard https://gearboxcvt75318.theobloggers.com/38531056/gearbox-cvt-an-overview