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.
Specifications
| 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 |
13.2 7.2 9.3 |
| 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.
Frequently asked questions about the Volkswagen AQN
How much power does the Volkswagen AQN make?
The Volkswagen AQN develops 170 hp and 220 Nm of torque.
How much oil does the Volkswagen AQN take and which one?
Engine oil capacity: 4.6 liters. Recommended oil: 5W-30.
Does the Volkswagen AQN have a timing belt or chain?
Timing drive of the Volkswagen AQN: 2 chains.
Is the Volkswagen AQN turbocharged?
No, the Volkswagen AQN is naturally aspirated.
Does the Volkswagen AQN need valve clearance adjustment?
No, the Volkswagen AQN has hydraulic lifters, so the valve clearances do not need to be adjusted.
How long does the Volkswagen AQN last?
The typical lifespan of the Volkswagen AQN is ~280 000 km with proper maintenance.
What is the fuel consumption of the Volkswagen AQN?
VW Golf 2001: city 13.2, highway 7.2, combined 9.3 L/100 km.
What cars was the Volkswagen AQN 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.
What are the common problems of the Volkswagen AQN?
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. All known problems.
