Road roar is a big problem on lots of vehicles, especially those fitted with massive wheels and elastic band tyres, the Aygo isn't so fitted but the lack of any soundproofing whatsoever over the rear wheelarches, under the rear seat, in the boot area and inside doors and rear quarter panels means as speed rises the noise gets intrusive, it doesn't help that the standard radio and speakers are stunningly poor, so turning up the permanent distortion from that source only adds to the overall din.

Its isn't alone in this and on too many cars, incl some costing far more if you unclip the plastic cover over the rear wheelarch you will find only painted tin foil thickness steel, if you do nothing other than stick some self adhesive soundproofing pads over the entire wheelarches (between shell and trim obviously) you will find a big difference....its easy to experiment and find the source, just shove some duvets/blankets over the most likely sources and then soundproof to suit.

SWMBO had a C2 VTS for a while, that was diabolical for noise think of the most beat up old empty panel van you've ever been in and you're half way there, you couldn't hear yourself think and the poor quality trim was wafer thickness with no insulation at all, getting rid of the OE Michelins helped no end (and stopped the awful torque steer too), but fully soundproofing the rear end made the car inhabitable at motorway speeds.

Edited by gordonbennet on 20/07/2014 at 10:45