Mileage: 21 mpg combined city/highwayStarting price: $29,305The 2008 MKZ is bigger, more powerful (263-hp V-6 engine), and less expensive than some of its more prestigious luxury-import competitors. Fuel efficiency is better than decent, considering its size and power. According to the 2007 J.D. Power & Associates Initial Quality Study, the 2007 MKZ was the highest-ranked car, with the fewest problems per 100 vehicles in the entry premium car segment.