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 supersmooth eight-speed automatic. That results in effortless acceleration and fuel economy of 20 mpg overall in our tests. The Q7 is very quiet, instilling a sense of tranquility. There is an underlying firmness to the ride unless you splurge for 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. Advanced safety systems can keep the Q7 in its lane and brake the SUV automatically in an emergency.