Used 2014 Audi A8 Performance and Interior . Audi offers several power plants in the A8, starting with the standard supercharged 3.0-liter V6 that accelerates the sedan quickly. The range-topping engine is a 6.3-liter W12. The high-performance S8 has a twin-turbocharged V8 that puts out 520 horsepower and 481 pound-feet of torque. App Vay Tiền Nhanh.

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