Power comes from a 1.6-liter four-cylinder diesel engine that produces 77 kW (105 hp) and 250 Nm of torque.

Audi has unveiled the fuel efficient A3 1.6 TDI.

As the name implies, power comes from a 1.6-liter four-cylinder diesel engine that produces 77 kW (105 hp) and 250 Nm of torque. There's no confusing it with the long-rumored RS3, as 0-100 km/h takes 11.4 seconds (11.7 seconds for the Sportback) and the top speed is limited to 190 km/h (118.06 mph).

Thanks to brake-energy regeneration and an engine start/stop system, the 1.6 TDI only consumes 3.8L/100 km (61.90 US mpg) while emitting 99 grams of CO2 per kilometer (159.33 g/mile). Other efficiency tweaks include a gear-change indicator, improved aerodynamics, and low rolling resistance tires.

While pricing information wasn't released, Audi said the new model will be launched in the first half of 2010.

Gallery: Audi A3 TDI Joins the Line-up