Engine Volkswagen AQN

The 2.3-liter Volkswagen AQN 2.3 VR5 gasoline engine was produced from 2000 to 2005 and was installed on the Golf 4 and other platform models with a transverse engine. A similar power unit, which was installed longitudinally on the Passat B5, has the AZX index.

The EA395 series includes: AGZ, AQN, AZX.


Production years 2000-2005
Displacement, cc 2324
Fuel system injector
Power output, hp 170
Torque output, Nm 220
Cylinder block cast iron VR5
Block head aluminum 20v
Cylinder bore, mm 81
Piston stroke, mm 90.2
Compression ratio 10.8
Features no
Hydraulic lifters yes
Timing drive 2 chains
Phase regulator no
Turbocharging no
Recommended engine oil 5W-30
Engine oil capacity, liter 4.6
Fuel type petrol
Euro standards EURO 3
Fuel consumption, L/100 km (for VW Golf 2001)
— city
— highway
— combined
Engine lifespan, km ~280 000

The engine was installed on:

  • Volkswagen Beetle 1 (9C) in 2000 – 2005;
  • Volkswagen Bora 1 (1J) in 2000 – 2002;
  • Volkswagen Golf 4 (1J) in 2000 – 2003;
  • Seat Toledo 2 (1M) in 2001 – 2003.

Disadvantages of the VW AQN engine

  • You need to understand that this is a rare power engine and there are problems with its service;
  • The engine is famous for its high fuel consumption, and for high mileage also lubrication;
  • The timing chain does not have a very large resource, and its replacement is complicated and expensive;
  • Very often there are oil leaks from under the valve cover, you have to change it;
  • The reasons for floating engine speeds are air leaks or throttle contamination.

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