Audi diesel straight-4 1.9 L AAZ engines

Audi diesel straight-4 1.9 L AAZ 74 HP at 4400 RPM, 140 N⋅m at 2200 RPM engine

It's an 1896 cc (1.67 UK qt.) internal combustion reciprocating Inline 4 engine. It has bore/stroke ratio of 79.5 mm × 95.5 mm (3.13 in × 3.76 in). This engine was rated 55 kW (73.76 hp) at 4400 rpm and 140 N⋅m (103.26 lbf⋅ft) of torque at 2200 rpm.