KBB.com 10 Best Luxury SUVs. Only 39,814 Miles! Boasts 25 Highway MPG and 20 City MPG! This Audi Q7 boasts a Intercooled Turbo Premium Unleaded I-4 2.0 L/121 engine powering this Automatic transmission. Leather seating surfaces, Window Grid Diversity Antenna, Wheels: 18... via CarSoup