The Audi Q7 e-tron is a plug-in hybrid SUV that goes up against similar rivals from BMW and Volvo The Q7 e-tron is powered by a 3.0-litre V6 diesel engine paired with an electric motor Despite the extra weight of batteries, the Q7 e-tron handles well for its size and weight You can travel up to 34 miles solely on electric power Among the largest hybrids on sale, the Q7 e-tron is almost as practical as its petrol and diesel-powered counterparts ‘e-tron’ is the name given to all plug-in hybrid Audi cars All-electric mode can be activated by a simple button press Although it’s expensive, the Audi Q7 e-tron is well built, fast, economical and luxurious Ride quality is exemplary, especially with the optional adaptive air suspension fitted Standard equipment is generous and includes LED lights, heated leather seats, ‘virtual cockpit’ dials and sat nav, plus much more