Opel Diplomat A
The American-hearted flagship that brought V8 muscle to the Autobahn.
- Power
- 190 bhp
- Top speed
- 124 mph
- Est. value
- $20k–$45k
About the Opel Diplomat A
Introduced in 1964 as the pinnacle of Opel's 'KAD' (Kapitän, Admiral, Diplomat) range, the Diplomat A was designed to challenge Mercedes-Benz with American-inspired luxury and power. It was exclusively powered by Chevrolet small-block V8 engines, with the 4.6-litre '283' unit serving as the initial standard powerplant. While its styling and drivetrain were heavily influenced by General Motors' US divisions, the chassis was tuned for European tastes, featuring a sophisticated De Dion rear axle in later iterations. Despite its impressive performance and high specification, it remained a niche choice compared to its Stuttgart rivals, making well-preserved examples rare today.
Opel Diplomat A specs
The Opel Diplomat A produces 190 bhp (142 kW) and 343 Nm (253 lb-ft) of torque. It has a top speed of 124 mph (200 km/h).
| Make | Opel |
|---|---|
| Model | Diplomat |
| Generation | A |
| Trim | 4.6 V8 |
| Years | 1964–1968 |
| Type | Classic |
| Body style | Saloon |
| Country | Germany |
| Production | About 9,152 built |
| Engine | 4.6-litre Chevrolet V8 |
|---|---|
| Displacement | 4,638 cc (4.6 litres) |
| Induction | Naturally aspirated |
| Power | 190 bhp (142 kW) at 4,600 rpm |
| Torque | 343 Nm (253 lb-ft) |
| Redline | 5,000 rpm |
| Top speed | 124 mph (200 km/h) |
| Transmission | 2-speed Powerglide automatic |
| Drivetrain | Rear-wheel drive |
| Weight | 1,570 kg (3,461 lb) |
| Power-to-weight | 121 bhp per tonne |
Typical figures for the standard car; options, markets and model years vary. Where our specs come from
How much is an Opel Diplomat A worth?
A typical Opel Diplomat A is estimated to be worth $20,000 – $45,000 (about £15,000 – £34,000).
Values are directional estimates for a typical example, not appraisals. Condition, mileage, history and specification all change what a real car is worth. Pound figures use the exchange rate of 3 November 2026. How values are estimated
Opel Diplomat A rarity in CarSpot
The Opel Diplomat A is a Rare card in CarSpot, with a rarity score of 50 out of 100. Performance cars, typically worth around £50,000 to £100,000. A Rare card is worth 40 XP.
Each model's tier starts from a 0–100 score based on its value plus its power or production numbers. Once enough players have spotted a model, how often it is spotted can move it up or down one tier. How CarSpot rarity works
Rarity is a collectible game mechanic, not an assessment of real-world scarcity or value.
Opel Diplomat A fun facts
- The Diplomat A's 4.6-litre V8 and Powerglide transmission were imported directly from Chevrolet in the United States.
- At its launch, the Diplomat was one of the few European cars to offer standard features like power steering and a heated rear window.
- The Diplomat A was so large by European standards—nearly 5 metres long—that it was often referred to as a 'German Cadillac'.
