Hi, just bought 2016 smart car, loving it but the humming noise is really annoying, wondering if anyone out there has got the same issues. I think it is not the tyres as it’s quite new, only done 2000 miles.
Hi, thanks for the info. It's more like cruising at 30 mph that the humming noise sets in. I think the best option is to take it back to smart, it's still under warranty.So your MY16 451 ICE (not MY17 453 ED) has an annoying hum - upon starting, in gear/neutral, while driving, at speed from what direction/area?
Can be very hard to diagnose over the Internet? Note, these two vehicles/model years do not compare well and are very much apples to oranges . . .
Really need more information or, it should be under warranty if you are lucky enough to have a smart Center near.