Audi's luxury three-row SUV is an impressive vehicle, and among the best we've ever tested. It employs a supercharged 3.0-liter V6 that is mated to a very smooth eight-speed automatic. This results in effortless acceleration and fuel economy of 20 mpg overall in our tests. The Q7 is very quiet, instilling a sense of tranquility. The ride has an underlying firmness unless you splurge on the Prestige trim and the optional air suspension, which makes it as plush as a luxury car. Handling is responsive and confidence-inspiring. The beautifully finished interior exudes luxury, with excellent seats and a vivid, high-tech digital instrument cluster. The controls prove logical with familiarity. Available advanced safety systems include automatic emergency braking and lane-keep assist.