Opel Diplomat B (1969–1978)
The Opel Diplomat B was offered with 2 gasoline engine versions, from 165 to 230 hp, built 1969–1978.

Production years1969–1978
Body styleSedan
Doors5
Length193.7 in (4,920 mm)
Width72.9 in (1,852 mm)
Height57.1 in (1,450 mm)
Cargo volume16.8 cu ft (475 l)
Fuel tank21.1 gal (80 l)
All Opel Diplomat B engines
| Engine | Years | Fuel | Power | Torque | 0–62 mph | Top speed | Combined | Drive |
|---|---|---|---|---|---|---|---|---|
| 2.8 E (165 hp) | 1969–1975 | Gasoline | 165 hp (121 kW) | 169 lb-ft (229 Nm) | 10.5 s | 118 mph (190 km/h) | Rear-wheel drive | |
| 5.3 V8 (230 hp) Automatic | 1969–1978 | Gasoline | 230 hp (169 kW) | 315 lb-ft (427 Nm) | 8.5 s | 127 mph (205 km/h) | Rear-wheel drive |
Figures are the manufacturer's, mostly for the European versions, and can vary with equipment. Fuel economy is converted from the European test (l/100 km) to US mpg, so it reads higher than an EPA rating. Engines with a link have their own spec sheet.