Up to 5 typical model features are used for identification.
| Y | ...exhaust emission limits | Euro standard 4 |
|---|
| 25 | ...engine size | Displacement in litres x 0.1 |
| D | ...mixture system | Diesel |
| T | ...spec.version | Turbo |
| Petrol engine (example) | Diesel engine (example) |
|---|
| Z | ....exhaust emissions standard | X | ....exhaust emissions standard |
| 16 | ....engine size | 20 | ....engine size |
| Y | ....compression ratio | D | ....mixture system |
| E | ....mixture system | T | ....spec. version |
| | H | ....spec. version |
Explanations for Engine Identification:
| Exhaust emissions standard | X | 96/69/EC, D3/D4 |
|---|
| Y | 68/69/EC, Euro 3 / D3 or Euro 3 / D4 |
| Z | 68/69/EC, Euro 3 / D4 or Euro 4 |
| Engine size | x 0.1 = displacement in litres |
| Compression ratio | L | > 8.5 – 9.0 : 1 | X | > 10.0 – 11.5 : 1 |
| N | > 9.0 – 9.5 : 1 | Y | > 13.0 : 1 |
| S | > 9.5 – 10.0 : 1 | | |
| Mixture system | D | Diesel | N | Natural |
| E | Injection | Z | Central injection |
| Special version (as required | G | Gas | T | Turbocharging |
| H | High performance/supercharging | V | Volume model |
| L | Low performance / supercharging | 2 | Family II engine |
| R | Increased output | | |
