For me:
- Two door sexy shooting brake
Four seated, with sufficient leg room for adults in the back
Rear seats can fold flat to allow all manner of large items to fit in the rear ()
Minimalist Tesla-style interior design, but with Jag levels of quality
Rear wheel drive for epic skidz
Light weight design, as far as possible
V6 engine, also with a plug in hybrid battery motor
Circa 300 bhp
Manufactured by Honda, Lexus, Volvo or maybe even Lotus
£40k new, I'll buy it at 5 years old for £16k