AUDI / VOLKSWAGEN AFB — 2.5L Engine
2.5L · 150 hp
Engine overview
Manufacturer
AUDI / VOLKSWAGEN
Displacement
2.5 L
Power
150 hp
Production years
1997-2003
Fuel type
Diesel
Vehicles with this engine
4B
8D
3B
4D
Factory specifications
Values from the manufacturer documentation for this engine.
Engine (general)
| Engine code | AFB |
| Capacity | 2496 cc |
| Idle speed | 700 - 840 rpm |
| Normal | 27 - 33 bar |
| Minimum | 24 bar |
| Differential limit between cylinders | 5 bar |
| Oil pressure | 2.0 / 2000 bar/rpm |
Engine (diesel)
| System (make and type) | Bosch EDC 15M |
| Injection pump (make and type) | Bosch VP44 |
| Number of cylinders | 6 |
| Injector firing order | 1 - 4 - 3 - 6 - 2 - 5 |
| Injector pressure | 200 - 235 bar |
| Minimum | 170 bar |
| Exhaust gas analysis test method/probe (Germany only) | B / 1 |
| Oil temperature during test | 80 °C |
| Min. no-load governed speed | 4500 rpm |
| Max. no-load governed speed | 5500 rpm |
| Exhaust gas analysis | < 2.0 m-1 |
| Idle speed, minimum | 680 rpm |
| Idle speed, maximum | 860 rpm |
| Test time | 0.5 s |
Cooling system
| Cap pressure | 1.4 - 1.6 bar |
| Thermostat opens at | 87 - 102 °C |
| Stage 1/Fan 1 | 92 - 97 °C |
| Stage 2/Fan 2 | 99 - 105 °C |
Electrical
| Battery | 62 / 74 / 80 Ah |
| Alternator | 90 / 120 A |
Brakes
| Disc thickness, front | 25.0 mm |
| Disc thickness, front, min. | 23.0 mm |
| Disc thickness, rear | 10.0 mm |
| Disc thickness, rear, min. | 8.0 mm |
| Disc thickness, rear | 22.0 mm |
| Disc thickness (ventilated), rear, min. | 20.0 mm |
Steering and wheel alignment
| Toe-in, front | 0°10' ± 02' ° |
| Camber, front | 1BA/1BP: -0°35' ± 25' 1BE: -0°50' ± 25' 1BB/1BF: -0°20' ± 25' ° |
| Camber, front | 1BF: -0°35' ± 25' ° |
| Max. difference left side - right side | 30' mm |
| Toe-in, rear | 1BA/1BB/1BF: 0°20' +15'/-10' 1BE: 0°28' +15'/-10' 1BP: 0°14' +15'/-10' ° |
| Toe-in, rear | 0°16' ± 10' ° |
| Camber, rear | -1°30' ± 20' ° |
| Camber, rear | -0°40' ± 30' ° |
Wheels and tyres
| Tyre size | 195/65 R15 |
| Tyre size | 205/60 R15 |
| Tyre size | 205/55 R16 |
| Tyre size | 225/45 R17 |
| Front tyre pressure | 2.6 - 2.7 ( > 10/2000) 2.5 - 2.7 (10/2000 >) bar |
| Rear tyre pressure | 2.4 - 3.1 ( > 10/2000) 2.3 - 3.3 (10/2000 >) bar |
| Spare tyre pressure | 4.2 bar |
Capacities
| Engine sump, incl. filter | 5.4 l |
| Manual transmission | 01E |
| Gearbox refill | 2.4 l |
| Automatic transmission | 01V l |
| Gearbox refill | 2.6 l |
| Differential | 0.75 l |
| Transfer box | 0.8 l |
| Cooling system | 10.0 l |
| Air-conditioner refrigerant | 650 - 700 g |
| Air-conditioner refrigerant | 700 - 750 g |
| Air-conditioner compressor oil | 250 ml |
Torque settings
| Cylinder head bolts — Stage 1 | 35 Nm |
| Cylinder head bolts — Stage 2 | 60 Nm |
| Cylinder head bolts — Stage 3 | 90 ° |
| Cylinder head bolts — Stage 4 | 90 Nm |
| Injector nozzle | 20 Nm |
| Glow plugs | 15 Nm |
| Front hub | M14: 115 Nm + 180° M16: 190 Nm + 180° Nm |
| Rear hub | 60 Nm |
| Rear hub | M14: 115 Nm + 180° M16: 190 Nm + 180° Nm |
| Wheel bolts | 120 Nm |
Emissions
| Emission code | 70/220*1996/69 |
| Emission standard | Euro 2 (08/1999 ->) |
| CO2 average | 186 g/km |
| CO | 0.539 g/km |
| HC NOx | 0.391 g/km |
| Particles | 0.056 g/km |
| Emission code | 70/220*1999/102A |
| Emission standard | Euro 3 (09/2000 ->) |
| CO2 average | 186 - 189 g/km |
| CO | 0.509 g/km |
| NOx | 0.347 g/km |
| HC NOx | 0.409 g/km |
| Particles | 0.036 g/km |
| Emission code | 70/220*2001/1A |
| Emission standard | Euro 3 (07/2001 ->) |
| CO | 0.314 g/km |
| NOx | 0.318 g/km |
| HC NOx | 0.374 g/km |
| Particles | 0.034 g/km |
| Emission standard | Euro 2 (10/1999 ->) |
| CO2 average | 213 g/km |
| CO | 0.176 g/km |
| HC NOx | 0.627 g/km |
| Particles | 0.067 g/km |
| CO2 average | 213 - 216 g/km |
| CO | 0.352 g/km |
| NOx | 0.385 g/km |
| HC NOx | 0.430 g/km |
| Particles | 0.035 g/km |
| CO | 0.295 g/km |
| NOx | 0.384 g/km |
| HC NOx | 0.420 g/km |
| Particles | 0.026 g/km |
| Emission standard | Euro 2 (07/1998 ->) |
| CO2 average | 211 - 216 g/km |
| CO | 0.492 g/km |
| HC NOx | 0.629 g/km |
| Particles | 0.060 g/km |
| CO2 average | 216 g/km |
| CO | 0.261 g/km |
Engine codes in the same family
The same code prefix usually means the same block with a different output, fuel or model year. Procedures are often shared — check the code on the engine plate.
Workshop procedures for this engine
Step-by-step procedures from the workshop database, carrying 398 torque figures.
- Removing and installing toothed belt · 56 torque figures
- Removing engine · 41 torque figures
- Installing engine · 36 torque figures
- Removing and installing sump (top section) · 25 torque figures
- Removing and installing camshafts · 18 torque figures
- Stress-free alignment of exhaust system · 54 torque figures
- Cylinder head - exploded view · 21 torque figures
- Crankshaft - exploded view · 19 torque figures
- Removing and installing injection pump · 14 torque figures
- Installing cylinder head · 14 torque figures
- Removing and installing drive plate · 17 torque figures
- Removing and installing turbocharger · 10 torque figures
- Removing and installing poly V-belt · 11 torque figures
- Removing and installing injectors · 6 torque figures
- Measuring radial clearance of crankshaft · 11 torque figures
- Draining and filling cooling system · 6 torque figures
- Removing and installing coolant pump · 6 torque figures
- Removing, installing and checking thermostat · 4 torque figures
- Measuring radial clearance of conrods · 8 torque figures
- Checking compression · 5 torque figures
- Removing and installing oil pump · 5 torque figures
- Removing toothed belt from camshaft sprockets · 2 torque figures
- Removing sump (top section) · 2 torque figures
- Installing sump (top section) - engines with liquid gasket · 5 torque figures
- Removing and installing mounting bushes on bracket for power steering pump and oil cooler · 2 torque figures
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The story behind TorqFix →Workshop data on this page last updated 22 Aug 2026.