The Detroit concept sports a striking exterior design that combines the large footprint of an SUV with the sleek lines of a coupé. It is powered by an e-tron-badged plug-in hybrid powertrain made up of a 3.0 TFSI petrol engine, which produces 329bhp and 369lb ft, and an electric motor.
A 17.9kWh lithium ion battery is located at the rear. It gives a claimed all-electric range of 37 miles and takes two and a half hours to fully charge via a 7.2kW charger. With a full tank of fuel, the Q8 has a claimed maximum range of up to 621 miles.
The electric motor adds 134bhp and 243lb ft, bringing the combined system outputs to 443bhp and 516lb ft, which is enough for the Q8 to hit 62mph from rest in just 5.4sec and go on to a limited top speed of 155mph.
The concept uses an eight-speed tiptronic automatic transmission with permanent quattro four-wheel drive. It features a torque control system to improve agility by braking an inside wheel when cornering at speed.
The car sits on five-link adaptive air suspension front and rear. Adjustable damping control allows the driver to switch from Comfort through to a firmer Sport mode, with the different settings raising or lowering the car by as much as 90mm.