The Q7 is a full-size (and high-end) luxury-sport crossover SUV with standard third row seating and Quattro all-wheel-drive. It's available with your choice of two gas V-6 engines (both supercharged) or a turbocharged, direct-injected diesel (TDI) V-6.the gas V-8 powered Infiniti sucked its tank dry in 476 miles of highway driving. In the Q7 you've got 660 miles before it’s fill-up time again.

With 225 hp but a huge 406 pound-feet of torque, the diesel is technically slower than the gasoline engines, but it feels stronger in most situations. And with fuel economy of 17 mpg city, 25 highway, it definitely does better than the V-6 models' 16/22 mpg. 

Prices start at $46,250 for the standard model with 3.0 liter gas V-6, automatic transmission and Quattro all-wheel-drive. The TDI diesel (also with automatic and Qutattro) starts at $51,450. An S-line version of the Q7 with a more powerful supercharged gas V-6 is also available. Its base price is $59,950.