The main thing at (near) steady state noise at higher speeds is how well the car is at mitigating the road noise. At city speeds, having both a Leaf at home an

The main thing at (near) steady state noise at higher speeds is how well the car is at mitigating the road noise. At city speeds, having both a Leaf at home and a Toyota Sienna, that the noise from the Leaf is near nothing. If I'm accelerating to make sure I make it through the yellow light, I never get a roar, an downshift, or anything of that nature. On my Toyota or any large car, that flares up and the noise is appreciable. If you floor it on an ICE at 60 to pass someone, that noise is quite loud, even against the road noise. On my Leaf, it's just road noise. I don't get a loud revving of the engine, just more road noise. Also, here's a reference for interior cabin noise found here: http://www.auto-decibel-db.com/ http://www.auto-decibel-db.com/