I am still considering buying an A3 sportback 1.4 COD. I have not yet been able to test drive one, but did get a test drive on a S line 2.0 TDI with 18" wheels. Interesting that What Car comments on the amount of road noise in the Audi, because I found it to be intrusive on my drive and was very disappointed, comparing it unfavourably with my current Jaguar XF, which I am thinking of changing because I want a petrol engine and smaller car.
Is anyone able to give their opinion on how much, if any, road noise is less with 17" wheels?