Audi is now offering the A1 and A3 models with a 1.4-liter TFSI engine featuring cylinder-on-demand technology.

Audi is now offering the A1 and A3 models with a 1.4-liter TFSI engine featuring cylinder-on-demand technology.

The power unit is capable of developing 140 HP (103 kW) at 5,000 rpm and 250 Nm (184 lb-ft) of torque between 1,500 rpm and 3,500 rpm. The A1 and A1 Sportback come with a twin-clutch, 7-speed S tronic gearbox sending the three-door version to 62 mph (100 km/h) in 7.9 seconds and the five-door in 8 seconds. The A3 and A3 Sportback receive a 6-speed manual transmission which enables sprint times of 8.3s and 8.4s, respectively. All four cars are able to achieve a top speed of 132 mph (212 km/h).

The second and third cylinders are shut down during low and intermediate loads and also when coasting. The engine speed has to be between 1,400 rpm and 4,000 rpm, while the torque has to be between 25 Nm (18 lb-ft) and 75 Nm (55 lb-ft). Once the driver presses hard the acceleration pedal, the two cylinders are reactivated for a stronger engine response.

The Audi A1 Sport, S Line, Black Edition and A1 Sportback Sport can return 60.1 mpg UK (50 mpg US or 4.7 liters / 100 km) with CO2 emissions of 109 g/km, while the A1 Sportback S Line and Black Edition will do 57.6 mpg UK (47.9 mpg US or 4.9 liters / 100 km) and 113 g/km of CO2.

All versions of the A3 have a combined output of 60.1 mpg UK and CO2 emissions of 109 g/km, with the A3 Sportback being rated at 58.9 mpg UK (49 mpg US or 4.79 liters / 100 km) and 112 g/km of CO2.

Pricing details are available in the attached press release.

Audi A1 and A3 get 1.4 TFSI 140 HP engine with cylinder deactivation