Sitting atop the Q8 family is the 2025 Audi RS Q8 Performance, good for a claimed 631 horsepower and 627 lb-ft of torque from its 4.0-liter twin-turbo V-8. An eight-speed automatic transmission sends ...

Overall, the Audi Q8 is the most reliable due to its engine choice, the 3.0L V6, and even the sportier S8 and RSQ8 have very ...