Engine Audi NG

The 2.3-liter Audi 2.3 NG gasoline engine was produced by the concern from 1987 to 1994 and was installed on the third and fourth generations of popular models under the indices 80 and 90. Around 1991, the engine was significantly updated, some even write about two generations.

The EA828 series includes: RT, KU, NF, NG, AAR, AAN.


Production years 1987-1994
Displacement, cc 2309
Fuel system KE-III-Jetronic
Power output, hp 133 – 136
Torque output, Nm 186 – 190
Cylinder block cast iron R5
Block head aluminum 10v
Cylinder bore, mm 82.5
Piston stroke, mm 86.4
Compression ratio 10.0
Features SOHC
Hydraulic lifters yes
Timing drive belt
Phase regulator no
Turbocharging no
Recommended engine oil 5W-40
Engine oil capacity, liter 4.5
Fuel type petrol
Euro standards EURO 2
Fuel consumption, L/100 km (for Audi 80 B4 1993)
— city
— highway
— combined
Engine lifespan, km ~330 000

The engine was installed on:

  • Audi 80 B4 (8C) in 1991 – 1994;
  • Audi 90 B3 (8A) in 1987 – 1991.

Disadvantages of the Audi NG engine

  • Most of the problems of this unit are associated with the vagaries of the KE-III-Jetronic system.
  • The cause of floating speed is usually air leakage or contamination of the idle valve.
  • The culprits of unstable operation are often clogged nozzles and a gasoline pump.
  • Some components of the ignition system are distinguished by low reliability here.
  • On a run of 200,000 km, hydraulic lifters often begin to knock under the hood.

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