Audi has introduced a modification of the A3 Sportback, which can run on natural gas and biomethane. Sales of the 30 g-tron version start in the autumn at a price of € 30,700.
The fuel is stored in three bottles located at the rear of the body. The steel one holds four kilograms of methane and is located in front of the petrol tank, while two others made of reinforced polymer are fixed under the floor of the trunk.
The total amount of gas stored at a pressure of 200 bar is enough to travel 445 km. The nine-liter petrol tank is used to start the engine at low temperatures and to reserve if methane is used up.
Visually, the A3 Sportback 30 g-tron is completely identical to the other modifications. The only difference is in the volume of the trunk, whose volume has decreased from 380 to 280 liters.
Under the hood runs a 1.5-liter turbo engine with 131 hp. and a maximum torque of 200 Nm, combined with a seven-speed robotic transmission. Acceleration to 100 takes 9.7 seconds and top speed is 211 km / h.