1969 Opel Diplomat B Dimensions, Size & Specs

The curb weight of the Opel Diplomat B ranges from 1530 kg to 1690 kg (approximately 3372 to 3725 lbs). Its maximum permissible weight varies between 2030 kg and 2200 kg (around 4473 to 4850 lbs). This variation in weight depends on the specific model configuration and optional equipment fitted, impacting both performance and fuel consumption.

The Opel Diplomat B boasts a generous luggage capacity of 475 liters (about 16.8 cubic feet). This ample storage space in the trunk makes it suitable for long trips and practical for daily use, accommodating suitcases, grocery bags, or other cargo with ease.

The ground clearance of the Opel Diplomat B is 150 mm (approximately 5.9 inches). This moderate ride height balances a comfortable ride with adequate clearance over typical road obstacles, reflecting the car's design focus on a smooth, luxury sedan experience rather than off-road capability.

Yes, the Opel Diplomat B generally fits into a standard residential garage. With a height of 1450 mm (57.1 inches) and a width of 1852 mm (72.9 inches), it fits comfortably within typical garage dimensions, which usually accommodate vehicles up to around 2100 mm (82.7 inches) in height and over 2500 mm (98.4 inches) in width. However, clearance depends on the specific garage size and storage items in the space.

The Opel Diplomat B is slightly larger than the Diplomat A, presenting a more modern and refined design as well as increased dimensions. While the Diplomat A was slightly shorter and narrower, the Diplomat B’s length of 4920 mm and width of 1852 mm reflect Opel’s move towards a more spacious and luxurious full-size sedan. This increase in size also translated into enhanced interior space and luggage capacity.

The Opel Diplomat B’s dimensions place it solidly within the full-size luxury sedan category of its era. Its length of 4920 mm (193.7 inches) and width of 1852 mm (72.9 inches) are competitive with contemporaries like the Mercedes-Benz S-Class W108 and BMW E3. While slightly shorter or narrower than some American luxury sedans, it balances size and maneuverability nicely for European roads, offering comparable passenger comfort and luggage volume.

The Opel Diplomat B is classified as a full-size luxury sedan, featuring a classic four-door sedan body style. This configuration emphasizes passenger comfort, luxury, and ample interior space for both front and rear occupants, making it an appealing choice for executive transport in its production years.

The Opel Diplomat B was the flagship model of Opel’s lineup between 1969 and 1978, representing the brand’s entry into the luxury full-size sedan market. It combined robust V8 powertrains with advanced features of the time, elegant styling, and notable comfort. The Diplomat B helped establish Opel’s reputation for building upscale vehicles with German engineering precision, targeting buyers seeking luxurious but more accessible alternatives to premium German brands.

Given its curb weight ranging from 1530 kg to 1690 kg (3372 to 3725 lbs) and substantial dimensions, the Opel Diplomat B requires suitable maintenance facilities equipped to handle full-size sedans. Its moderate height and width generally pose no issues for standard automotive lifts or service bays. For storage, the car fits in most family garages—however, the relatively low ground clearance of 150 mm (5.9 inches) means care should be taken on uneven surfaces to avoid undercarriage damage.