1984: map-controlled five-cylinder gasoline engine with emissions control as standard:
In 1984, a completely new development appears. Audi is the first manufacturer to optimize the five-cylinder engine with a fully electronic map-controlled ignition system and a catalytic converter as standard. From 2,309 cc, it produces 100 kW (136 hp) at 5,600 rpm and 188 newton meters (138.66 lb-ft) of torque at 3,500 revolutions per minute. The most widely used five-cylinder engine from Audi is found in the Audi 100 2.3E (C3), the Audi Coupe 2.3E (B3) and in the Audi 90 2.3 E (B3). From 1990, it also powers the Audi 100 2.3E (C4) and a year later the Audi 80 2.3E (B4) and the Audi Cabriolet 2.3E. Here, it delivers 98 kW (133 hp) at 5,600 revolutions per minute and 186 newton meters (137.19 lb-ft) at 4,000 rpm.