By my experience, IC engines are only quiet when the car is coasting, but not when it is accelerating or has to go uphill. Having compared the driving noises of

By my experience, IC engines are only quiet when the car is coasting, but not when it is accelerating or has to go uphill. Having compared the driving noises of electrical and ICE cars driving past me, the noise reduction is quite significant. Even more, when accelerating at traffic lights, or when cranking the car.