This is the full-size SUV par excellence for those looking for space and good towing capacity. Its cargo volume increases from 308 to 2,053 litres once the rear bench is lowered. The line-up includes two 3.0L supercharged V6 engines that produce 280 to 333 horsepower. As for the Audi Q7 TDI, it develops 240 horsepower and 407 lbs.-ft. of torque for an average fuel consumption of 7.7 L/100 km on the highway.