- 1761 cm³ — XU7 (type code 7ALFZ2 or 7AL6A2)
- 1998 cm³ — (8-valve) XU10J2/C/L or XU10J2C/Z (type RFX)
- 1998 cm³ — (16-valve) XU1010J4/L or XU10J4/Z (type RFX)
Number of cylinders - 4
The cylinders are arranged in-line
Valve control. One or two camshafts, plate or hydraulic tappets.
Ignition sequence: 1-3-4-2
Cylinder bore diameter:
- engine with a displacement of 1761 cm³ - 83.00 mm
- engine with a displacement of 1998 cm³ - 86.00 mm
Piston stroke:
- engine with a working volume of 1761 cm³ - 81.40 mm
- engine with a displacement of 1998 cm³ - 86.00 mm
Compression ratio:
- engine with a displacement of 1761 cm³ - 9.25:1 (76 kW) or 8.5:1 (70 kW)
- engine with a displacement of 1998 cm³ (8-valve) — 9,5:1
- engine with a displacement of 1998 cm³ (16-valve) — 10,4:1
Maximum power (DIN):
- 1761 cm³ engine - 76 kW (103 hp) at 6000 rpm
- engine with a displacement of 1998 cm³ (8-valve) — 90 kW (123 hp) at 5750 rpm
- engine with a displacement of 1998 cm³ (16-valve) — 114 kW (155 hp) at 6500 rpm
Maximum torque (DIN):
- 1761 cm³ engine - 53 Nm at 3000 rpm (142 Nm at 3000 rpm (70 kW)
- engine with a displacement of 1998 cm³ (8-valve) — 176 Nm at 2750 rpm
- engine with a displacement of 1998 cm³ (16-valve) — 183.5 Nm at 3500 rpm
Oil pressure:
| 8-valve | 16-valve | |
| at 1000 rpm | 4.4 bar | 2.2 bar |
| at 2000 rpm | 4.8 bar | 4.3 bar |
| at 4000 rpm | 5.2 bar | 5.2 bar |
Idle speed - see "Idle system"
Valve control -1761 cm³
- Intake valve opening: 8°50' before top dead center
- Intake valve closing: 29°30' after top dead center
- Exhaust valve opening - 43'30' before top dead center
- Exhaust valve closing - 5°50' after top dead center
- With a theoretical valve clearance of 1.0 mm
Valve control
| Engine with a displacement of 1998 cm³ | Engine with a displacement of 1998 cm³ | |
| 8-valve | 16-valve | |
| Opening the intake valve | 1°01' before TDC | 1°03' after TDC |
| Closing the intake valve | 42°22' after TDC | 47° after TDC |
| Opening the exhaust valve | 40°01' before TDC | 46° before TDC |
| Closing the exhaust valve | 3°24' after TDC | 0°03' after TDC |
With a theoretical valve clearance of 1.0 mm
Valve clearances (if regulated):
- Inlet valves 0.20 mm
- Exhaust valves 0.40 mm