Engine Audi AAD

The 2.0-liter Audi AAD gasoline engine was produced by the concern from 1990 to 1993 and was installed on the company’s most popular models of its time with indexes 80 and 100. This power unit was equipped with a very capricious KE-Motronic fuel injection system.

The EA827 2.0l series includes: 2E, AAD, AAE, ABT, ABK, ADY, AGG, ABF, ACE.


Production years 1990-1993
Displacement, cc 1984
Fuel system KE-Motronic
Power output, hp 115
Torque output, Nm 168
Cylinder block cast iron R4
Block head aluminum 8v
Cylinder bore, mm 82.5
Piston stroke, mm 92.8
Compression ratio 10.4
Features SOHC
Hydraulic lifters yes
Timing drive belt
Phase regulator no
Turbocharging no
Recommended engine oil 5W-30
Engine oil capacity, liter 3.0
Fuel type petrol
Euro standards EURO 2
Fuel consumption, L/100 km (for Audi 100 1992)
— city
— highway
— combined
Engine lifespan, km ~320 000

The engine was installed on:

  • Audi 80 B3 (8A) in 1990 – 1991;
  • Audi 100 C4 (4A) in 1990 – 1993.

Disadvantages of the Audi AAD engine

  • Most often, car owners with such an engine complain about the vagaries of KE-Motronic;
  • The main reasons for unstable operation are sensor glitches or air leaks;
  • Also, many components of the ignition system have low reliability;
  • The timing belt is designed for 90 thousand km, but when it breaks, the valves most often do not bend;
  • At very long runs, hydraulic lifters often fail and knock.

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