Highway road / wind noise, much quieter than the A3. A5 was a sport trim with 18 inch 245/40 tyres, 35TDI (2.0) 163ps. Did 69mpg on the journey back, did 61mpg on the journey up with the A3 30TFSI. Not quite sure it was MHEV or not, but it did shut the engine down whilst rolling (even on down sections on motoway) but not in the same ways as the A3. I like the illuminated cup holders! It was the same MMI system, except that the VC was the large one and had more dial options! However the one thing that struck me was how POOR the sound system was! 8 speaker (stock) sound system. I had the same USB full of my music and I put in the same treble and bass settings. Can't wait to get back my A3 with B&O soundwise!