Perhaps the greatest achievement of the latest A5 is its ability to isolate occupants from the dreaded collywobbles that blight most four-seat convertibles. For a drop-head, it feels remarkably shake-free, dealing with lumps and bumps in assured fashion. You still get the occasional clue, via some vibrations in the rear view mirror, and the odd wobble through the steering column, but for the most part, the windscreen pillars, seat frames and side windows remain remarkably resistant to tremors.
This body integrity is supplemented by smoothly measured suspension that allows the A5’s body to breathe vertically and float along fast flowing roads with great poise. However, there's no doubt that cars with the lower S line suspension do have a firmer feel, transmitting more of the lumps and bumps to the car's occupants. Roof down, with the wind deflector in place, front passenger hair-dos will remain unmolested, but a fair bit of buffeting can be heard swirling around the back of the cabin at 70mph, so you’ll need to raise your voice to the levels you normally reserve for your Grandad to communicate clearly with your front-seat partner. If you want to take the kids along, you’ll need to remove the wind deflector, and this dramatically increases the buffeting. It’ll be bearable if you’re just popping into town, but if you’re venturing further afield, you’ll definitely need to pop the roof up.
Handling depends a great deal on which engine you choose. The four-cylinder diesel A5 feels the most softly sprung and it rolls more in corners than the petrol models, and once you get it turned into a corner, you never really lose the sensation that the engine’s substantial heft is lolling around under the bonnet. The 2.0-litre petrol-engined car feels far more neutrally balanced and with it, more composed in bends, remaining flatter and reacting much quicker to steering inputs.