Compare the Volvo S60 T6 3.0 Turbo - [2013] vs KIA Optima 2.0 Turbo - [2011]. Find out which car is the fastest, most powerful, lightest or has the biggest engine in our top trumps style comparison page. Find out which car has the highest top speed or is the fastest accelerating, is it the Volvo S60 T6 3.0 Turbo or the KIA Optima 2.0 Turbo. We'll leave it up to you to decide which is your favourite.