Just picked up new Supra SE 450 from dealer with new 2017 Audi Q7 3.0 (gas) and towed it straight to the lake with 60 gallons gas, 5 passengers, 55 # puppy, and both stock ice chests full. With air suspension, 4-wheel steering and every other option it towed that >7000 # load without gear hunting cruising at 60-65 mph @< 2500 rpm. Steering, handling and braking were quite smooth. Acceleration was good even up hill. 100 deg outside and no overheating issues with AC on all the way.