Not only is the 2.5 - liter engine $ 1,500 more expensive than the 2.0 - liter, but it's also much more expensive to run — the claimed 20mpg city / 29mpg highway economy figures pale in comparison to the 2.0 - liter's 26mpg city /
38mpg highway numbers (figures which, we may add, make the Volvo S60 with that engine the most efficient compact executive sedan on the market today).