Audi will unveil its new Sport quattro concept at the Frankfurt motor show next week.

Powers comes from a plug-in hybrid system producing a total of 700PS and 800Nm of torque, enough to hit 62mph in just 3.7 seconds and on to a 189mph top speed.

The system uses a 4.0-litre twin-turbo V8 petrol engine rated at 560PS and 700Nm together with a 110kW 400Nm disc-shaped electric motor located between the engine and the eight-speed tiptronic transmission.

Electric power for the motor comes from a liquid-cooled 14.1 kWh lithium-ion battery in the rear of the car.

Three driving modes are available.  In EV mode, the electric motor drives the car with a 31-mile range.  In Hybrid mode, the car uses data from a variety of sources, including the satnav, to select the most efficient mix of petrol and electric motor use.  In Sport mode, the electric motor works to support the petrol engine to achieve maximum performance.

Driven sensibly, the Audi Sport quattro is said to be able to achieve up to 113mpg, with CO2 emissions of just 59 g/km.

The concept, which sits on 21-inch centre-locking wheels, measures 4,602mm long, 1,964mm wide and 1,386mm tall.

Extensive use of light-weight materials has allowed Audi to keep the concept’s weight down to just 1,850kg including batteries.  The doors and wings are made of aluminium, while the roof, bonnet and rear hatch are carbon-fibre reinforced plastic (CFRP).

The suspension is said to be ‘tautly-tuned’, while braking is by carbon-fibre ceramic discs.

The interior features a slim dashboard, racing-inspired bucket seats, and a cross-beam behind the rear seats for additional rigidity.  The instruments are all-digital, with a choice of modes – Race, Setup, etc.