[Danny chang]

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.

 

[Danny chang]

Hi, thanks for your reply.. l bought it used did not test drive the car cos we also have a 2017 smart car but without this issues. It’s not the electric model.. thanks again

 

[Danny chang]

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.

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.

 

[Danny chang]

Hi thanks for your info. The humming noise is very annoying probably around 30-35mph and beyond that speed it is not so awkward, l mean l can live with it. I was wondering has anyone’s got issues with this Continental ContiEco Contact 185/50 R16 tyres and only done 2100 miles. l have all along suspected that is the cause of the humming noise .. but again it couldn’t be so loud. Maybe you are right about the noise from the engine drone.. thanks a

 

[Danny chang]

Hi Rich, thanks for the info. I was also thinking that it might be a tyre issue but this car has only done 2000 miles. Probably Elementary Dragon is right about the engine drone noise. I might go to the tyre shop for second opinion. Thanks

 

[Danny chang]

Normal noises is understandable for a smart convertible but humming noise is different, very irritating.. it shouldn’t behave like that.. hopefully it’s the tyre issue. Thanks

 

[Danny chang]

Yes, did not test drive because it’s has only done 1500 miles and at them time l also owned at 2017 normal spec cabriolet.. it drives beautifully without any issues.. l would believe that the normal specs has got normal suspension and tyres that is why it’s not noisy and bumpy.. it’s my fault, l went for the looks instead of comfort.. haha.

 

[Danny chang]

Hi, l am in London and mine is also a 451 cabrio fitted with Conti tyres. You are right about the noise in the conti tyres as it’s standard for all Mercedes and Smart cars. I don’t think we have ED tyres over here but l surely do a search..
Thanks again