The 2008 Volvo S80 3.2 is the entry-level trim, offering less power than the T6 and the V8. The 3.2 features a 3.2-liter, 235-hp inline-six engine with a six-speed automatic transmission, and its gas mileage comes out to 16 mpg in the city, 24 on the highway. Drivers like the 3.2's smooth ride and 14.9 cubic feet of cargo space, but wouldn't mind getting a little more style.