From my recent experience, a Mondeo is 95% the car that a 3 series is. Assuming similar power of course. Having said that, a 320d (with the 180BHP engine) is verging on ‘proper’ fast and, with normal tyres, is a lovely firm ride. Quietness? I’d say the Mondeo is ever so slightly quieter. If you want room, it’s no contest of course. Audi A4 and C Class don’t come close for driving enjoyment. The A4 really is hugely overrated, IMHO. The quality of a C-Class isn’t as good as a Ford, by the way.