What is it?
The Audi A3 e-tron is a plug-in petrol hybrid version of the A3 Sportback. It’s powered by a 148bhp 1.4 litre TSI engine and a 99bhp electric motor sandwiched between the gearbox and power unit to drive the front wheels. The motor also doubles as the engine’s starter.
A six-speed DSG gearbox harnesses the power, its wide ratio spread enabling the electric motor to operate through a narrower, 0-2000rpm rev range that allows for a more efficient design. The adapted DSG transmission includes an additional clutch that decouples the motors to allow coasting, which is a more efficient use of kinetic energy than recuperation.
The e-tron’s 8.8kWh, 125kg battery lives under the rear seat, while the repositioned fuel tank sits beneath a slightly raised boot floor. Despite the tank’s proximity to the A3’s back end this car can absorb a 50mph rear impact without the plastic tank rupturing. At the other end of this A3 e-tron, neatly hidden behind the four rings of its grille, is the power socket for the charging cable.
Despite its low emission, fuel-saving hardware the e-tron can be considered as both fuel-saver and lightly sporting performance car. It has the scope to achieve a spectacular 188.3mpg – one tester has even managed 235mpg – besides sprinting to 62mph in 7.6sec and topping 138mph. It will also travel at up to 80mph on electric power alone, although its 31-mile range will obviously be compromised by high EV speeds like these.