SEAT BBU — 1.8L Engine
1.8L · 179 hp
Engine overview
Vehicles with this engine
Factory specifications
Values from the manufacturer documentation for this engine.
Engine (general)
| Engine code | BBU |
| Capacity | 1781 cc |
| Idle speed | 760 - 800 rpm |
| Normal | 10.0 - 13.0 bar |
| Minimum | 7.5 bar |
| Differential limit between cylinders | 3.0 bar |
| Oil pressure | 2.0 / 760-800 3.0-4.5 / 2000 bar/rpm |
| Minimum | 7.0 bar |
| Differential limit between cylinders | < 3.0 bar |
| Oil pressure | > 2.0 bar/rpm |
| Oil pressure | 3.0-4.5 / 2000 < 7.0/2000 > bar/rpm |
Engine (petrol)
| Fuel system (make and type) | Motronic ME 7.5 |
| Number of cylinders | 4 |
| Firing order | 1, 3 , 4, 2 |
| Spark plugs (make and type) | VW / Audi 101 000 063 AA NGK PFR 6Q |
| Spark plug gap | 0.8 mm |
| Lambda | 0.97 – 1.03 |
| CO at fast-idle speed | < 0.3 % |
| Firing order | 1 - 3 - 4 - 2 |
| Spark plugs (make and type) | VW/Audi 101 000 063 AA NGK PFR 6 Q |
| Fuel pump pressure | 2.5 bar |
| Residual fuel pressure | 2.0/10 bar/minutes |
Cooling system
| Cap pressure | 1.4 - 1.6 bar |
| Thermostat opens at | 87 °C |
| Thermostat fully open at | 102 °C |
| Stage 1/Fan 1 | 92 - 97 °C |
| Stage 2/Fan 2 | 99 - 105 °C |
Electrical
| Battery | 44/220A 60/280A Ah |
| Alternator | 70 90 A |
Brakes
| Disc diameter, front | 312.0 mm |
| Disc thickness, front | 28.0 mm |
| Disc thickness, front, min. | 26.0 mm |
| Brake pad thickness, front | 14.75 mm |
| Brake pad thickness, front, min. | 7.75 mm |
| Disc diameter, front | 288.0 mm |
| Disc thickness, front | 25.0 mm |
| Disc thickness, front, min. | 22.0 mm |
| Brake pad thickness, front | 14.0 mm |
| Brake pad thickness, front, min. | 7.0 mm |
| Disc diameter, rear | 256.0 mm |
| Disc thickness, rear | 22.0 mm |
| Disc thickness, rear, min. | 19.0 mm |
| Brake pad thickness, rear | 14.0 mm |
| Brake pad thickness, rear, min. | 7.0 mm |
Steering and wheel alignment
| Toe-in, front | + 0° 10' ± 0° 10' ° |
| Camber, front | -0° 28' ± 0° 30' ° |
| Max. difference left side - right side | 0° 30' ° |
| Castor, front | 4° 28' ± 0° 30' ° |
| Toe-in, rear | 0° 21' ± 0° 10' ° |
| Max. difference left side - right side | 0° 20' ° |
| Camber, rear | -1° 30' ± 10' ° |
| Camber, front | -0° 39' ± 0° 30' ° |
| Castor, front | 4° 42' ± 0° 30' ° |
| Toe-in, rear | 0° 26' ± 0° 10' ° |
| Camber, front | -0° 15' ± 0° 30' ° |
| Castor, front | 4° 14' ± 0° 30' ° |
| Toe-in, rear | 0° 16' ± 0° 10' ° |
Wheels and tyres
| Tyre size | 205/45 R16 83W (6.5Jx16) |
| Optional | 205/40 R17 83V (7Jx17) |
Capacities
| Engine sump, incl. filter | 4.5 l |
| Manual transmission | 02RE |
| Gearbox refill | 1.9 l |
| Cooling system | 5.0 l |
| Power steering | 0.8 l |
| Air-conditioner refrigerant | 550 ± 25 g |
| Air-conditioner compressor oil | 140 ml |
Torque settings
| Cylinder head bolts — Stage 1 | 40 Nm |
| Cylinder head bolts — Stage 2 | 90 ° |
| Cylinder head bolts — Stage 3 | 90 ° |
| Wheel bolts | 120 Nm |
| Oil plug | 30 Nm |
| Spark plugs | 30 Nm |
| Knock sensor | 20 Nm |
| Crankshaft gearwheel | 65 Nm |
| Rear hub | 175 Nm |
Emissions
| Emission code | 70/220*2002/80B |
| Emission standard | Euro 4 |
| CO2 average | 192 g/km |
| CO | 0.481 g/km |
| HC | 0.038 g/km |
| NOx | 0.028 g/km |
| HC NOx | 0.066 g/km |
| Emission code | 70/220*2003/76B |
| CO2 average | 180 - 192 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 141 torque figures.
- Removing engine · 41 torque figures
- Removing and installing oil sump · 23 torque figures
- Installing gearbox · 8 torque figures
- Installing engine · 9 torque figures
- Removing and installing turbocharger · 7 torque figures
- Adjusting differential · 10 torque figures
- Removing gearbox · 5 torque figures
- Removing and installing sealing flange - pulley end · 5 torque figures
- Adjusting output shaft · 6 torque figures
- Adjusting input shaft · 5 torque figures
- Renewing crankshaft oil seal - pulley end · 4 torque figures
- Dismantling and assembling output shaft
- Removing and installing engine control unit · 3 torque figures
- Removing and installing intake manifold
- Removing and installing oil seal on Hall sender · 2 torque figures
- Installing and adjusting · 3 torque figures
- Adjusting selector mechanism · 2 torque figures
- Removing and installing front exhaust pipe with catalytic converter
- Installing 5th gear · 1 torque figures
- Checking injectors
- Dismantling and assembling input shaft · 1 torque figures
- Removing and installing anti-theft engine control unit · 1 torque figures
- Removing and installing crankshaft sealing flange - flywheel end · 2 torque figures
- Removing and installing ignition coils with output stage · 1 torque figures
- Separating centre and rear silencers · 2 torque figures
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Get free diagnosis →Who makes these pages, and how
TorqFix was built by a mechanic — after a 2,700 km drive with five roadside repairs that no diagnostic tool could explain.
The figures on this page come from manufacturer workshop documentation and are shown as they are. The page is assembled automatically from that data — it is not written by an AI. The AI works in the chat, where it answers for your specific car. It writes nothing here.
Variants of the same model differ. Cross-check torque against the factory manual for your engine before final tightening.
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The story behind TorqFix →Workshop data on this page last updated 22 Aug 2026.