A few cars to think of in the future?

VW Passat (Saloon and Estate)

Impressive Fuel Economy/power balance on these:

(this is my favourite)

http://www.wisebuyers.co.uk/motoring/car-specifications/Volkswagen/Passat+(2001-05)/VW003900/ -> urban - 15km/litre, extra-urban - 25, combined 20.9 - BHP of 128

http://www.wisebuyers.co.uk/motoring/car-specifications/Volkswagen/Passat+(2001-05)/VW003929/

Volvo:

This one seems to be quite powerful (bhp of 180) but the fuel economy ...

http://www.wisebuyers.co.uk/motoring/car-specifications/Volvo/S60+(2000-06)/VO002361/

so this is a no no i think.