The 3.0 TDI introduced in 2004 was the first of Audi’s new-generation V-engines all featuring a 90 degree row angle, 90 millimeter cylinder gap and chain drive on the rear of the engine. Like all the large diesel engines, it had a lightweight but extremely strong vermicular graphite cast-iron block. Piezo inline injectors were used for the first time in the cylinder heads. Three versions of this highly versatile three-liter TDI were initially launched, with power outputs of 150 kW (204 hp), 165 kW (224 hp) and 171 kW (233 hp). The engine has been widely used in the Audi model range since its launch.