Audi  have released details of their Plug-in Hybrid Quattro ahead of the 2013 Frankfurt Motor Show. The new Quattro will be powered by a  four litre, twin-turbocharged V-8 petrol, with cylinder deactivation and stop-start technology. Between this and the car’s 8-speed tiptronic automatic gearbox is a 110 kW (147 horsepower), 295 lb-ft disc-shaped electric motor, fed by a […]