| General | |
| Body type | Sedan |
| Brand | Opel |
| Doors | 4 |
| End of production | 1975 |
| Generation | Diplomat B |
| Model | Diplomat |
| Modification (Engine) | 2.8 E (165 Hp) |
| Powertrain Architecture | Internal Combustion engine |
| Seats | 5 |
| Start of production | 1969 |
| Performance | |
| Acceleration 0 - 100 km/h | 10.5 sec |
| Acceleration 0 - 60 mph | 10 sec |
| Acceleration 0 - 62 mph | 10.5 sec |
| Fuel Type | Petrol (Gasoline) |
| Maximum speed | 190 km/h |
| Dimensions | |
| Drag coefficient (Cd) | 0.45 |
| Front track | 1510 mm |
| Height | 1450 mm |
| Length | 4920 mm |
| Minimum turning circle (turning diameter) | 11.8 m |
| Rear (Back) track | 1512 mm |
| Ride height | 150 mm |
| Wheelbase | 2850 mm |
| Width | 1852 mm |
| Engine | |
| Compression ratio | 9.5 |
| Cylinder Bore | 92 mm |
| Engine aspiration | Naturally aspirated engine |
| Engine displacement | 2784 cm |
| Fuel System | Multi-point indirect injection |
| Number of cylinders | 6 |
| Number of valves per cylinder | 2 |
| Position of cylinders | Inline |
| Power | 165 Hp @ 5600 rpm. |
| Torque | 229 Nm @ 4100-4600 rpm. |
| Drivetrain | |
| Drive wheel | Rear wheel drive |
| Front brakes | Ventilated discs |
| Number of Gears (manual transmission) | 4 |
| Rear brakes | Ventilated discs |
| Space | |
| Fuel tank capacity | 80 l |
| Kerb Weight | 1530 kg |
| Max load | 500 kg |
| Max. weight | 2030 kg |
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