Combined mpg: 14 mpg city/highway (both models)
Base price: $88,850 (X5 M) and $92,900 (X6 M) Suburban moms and dads who want to channel their inner Mario Andretti will love these two crossover SUVs, which can each reach 155 mph. "These premium SUVs are really good, capable vehicles that are loaded with technological and comfort features," Reed says. Both models come with twin-turbocharged 555-horsepower V-8 engines that can go from 0 to 60 mph in 4.5 seconds. They also feature BMW's xDrive intelligent all-wheel-drive system, 6-speed M Sport automatic transmission and special sensors that control the SUVs' stabilizers and shock absorbers to ensure ultra-high performance. In fact, the only major design difference between the two is that the X6 M (shown above) has a sloping roof and smaller back seat. That improves aerodynamics, but means the X6 M can only hold four passengers to the X5 M's five. What's not different is that both models weigh a lot -- more than 5,300 pounds each -- and get crummy gas mileage. The EPA rates each vehicle at 12 mpg/city and 17 mpg/highway.