Background
BMW Z1 (E30) was the first model in BMW’s Z Series and one of the most technically unusual roadsters in the company’s history. It was developed by BMW Technik GmbH, founded in 1985 to explore new engineering concepts, materials and production methods. The Z1 was first shown in 1987 as a prototype and technology demonstrator, and strong public interest led to series production beginning in 1988.
The return of the BMW roadster
The Z1 marked BMW’s return to the two-seat roadster after a break of several decades. It was conceived not only as a sports car but also as a test bed for ideas that could later be applied to other BMW production models. The Z1 also established the Z model family, later continued by the Z3, Z4 and exclusive Z8.
Retractable doors
The Z1’s most famous feature was its doors that retracted vertically into the side sills. The high side sills formed part of the car’s structural concept, allowing the Z1 to be driven with the doors lowered. A hot-dip galvanised steel structure was covered by removable plastic exterior panels, enabling BMW Technik GmbH to experiment with unconventional materials and production techniques.
2.5-litre straight-six
The BMW Z1 was powered by a 2,494 cm³ straight-six engine derived from the BMW 325i. It produced 170 hp at 5,800 rpm and drove the rear wheels through a five-speed manual gearbox. The engine was positioned behind the front axle, helping to achieve balanced weight distribution and contributing to the car’s agile handling.
The new Z-axle
The Z1 also introduced a new multi-link rear suspension design known as the Z-axle. It improved wheel control and cornering stability, and elements of the concept were later developed further for other BMW models. The Z1 was therefore much more than a limited-production roadster – it served as an important technological test bed for BMW.
220 km/h
With 170 hp, the Z1 reached a top speed of 220 km/h. Its sporting character was supported by a low centre of gravity, wide track and carefully developed chassis. The Z1 was not BMW’s most powerful sports car, but its appeal came from the combination of unusual engineering, relatively low weight and a particularly direct driving experience.
Only 8,000 cars
Series production of the BMW Z1 began in 1988 and continued until 1991. Exactly 8,000 cars were built. Its low production volume, unconventional construction and experimental origins at BMW Technik GmbH made the Z1 special from the beginning, and today it is one of the most distinctive early BMW Z models.
Model in the collection
The BMW Z1 (E30) in my collection was produced by Minichamps and represents the Z1 prototype and technology demonstrator first shown in 1987. It is a limited-edition model, with a total production run of 2,736 examples.
Technical data in brief
First shown: 1987
Series production: 1988–1991
Production location: Munich, Germany
Body style: two-seat roadster
Engine: 2.5-litre straight-six
Displacement: 2,494 cm³
Power: 170 hp @ 5,800 rpm
Transmission: 5-speed manual
Drivetrain: rear-wheel drive
Top speed: 220 km/h
Production: 8,000 cars
Special feature: retractable doors, plastic exterior panels and the starting point of BMW’s Z Series
Photo of the real car, BMW Museum. Photo: Sten-Patrick Kreek