2005 Volkswagen Passat
Some folks would argue you still can’t beat a diesel for fuel economy. The 2005 Volkswagen Passat TDI gets up to 38-mpg on the highway when powered by the 2.0-liter four-cylinder, turbo diesel engine. However, with only 95 cubic feet of passenger volume, the Passat’s interior is the smallest among our top ten. Prices start at about $24,000 for the GL TDI.