Master of efficiency
The 1.2 TDI was introduced in 2001, and made the A2 the first five-door car in the world to consume less than 3 liters of fuel per 100 kilometers (78.40 US mpg). Its average consumption of 2.99 l/100 km (78.67 US mpg) still remains unbeaten. The three-cylinder engine, based on the 1.4 TDI, weighed only 100 kilograms (220.46 lbs), mainly due to the use of an aluminum crankcase. A VTG turbocharger delivered air to the cylinders, and the fuel was injected by pump-nozzle elements. Power output was 45 kW (61 hp) and peak torque 140 Nm (103.26 lb-ft), maintained from 1,800 to 2,400 rpm. Even then, the A2 1.2 TDI had technical features such as a start-stop system for added efficiency.