Horsepower figures are one way automakers grab people’s attention. A family SUV with over 600 horsepower is a compelling proposition for someone who likes power without compromising utility. However, as a new video demonstrates, not all high-performance SUVs are equal, which compares the Audi RS Q8, BMW X5 Competition, Lamborghini Urus Performante, and Porsche Cayenne Turbo GT on the dyno.
Audi advertises its RS Q8 as cranking 600 horsepower from its 4.0-liter twin-turbocharged V8 engine. The calculated output after the dyno pull was 643 hp, with 530 of it reaching the wheels. However, it did weigh heavier than Audi’s claimed number, tipping the scales at a calculated 5,317 pounds (2,412 kilograms) and giving it a 266 hp/ton rating. That’s better than the manufacturer’s claimed 260 hp/ton.
