Advise needed

[extvr]

Hi chaps, looking at Volvo`s again, i need some advise about what really is the better car between an 850TR saloon, or S80T6 saloon. The S80 is a bigger engine with a twin turbo so power is up on the 850, but what is MPG like in the real world on both models, and would the S80 really be that much quicker?. Thanks guys i really like both models i just carnt decide which is the better.

Steve.