Background
BMW Z3 M Roadster (E36/7) was the most sporting open version of the Z3 family and one of the most distinctive BMW M models of the late 1990s. Introduced in 1997, it combined the compact two-seat Z3 body with high-performance engineering derived from the BMW M3 and traditional rear-wheel drive. BMW marketed the car simply as the M Roadster, although technically and stylistically it remained part of the Z3 model family.
M3 engineering in a compact roadster
Early European M Roadsters were powered by the 3,201 cm³ S50 straight-six derived from the E36 M3. It produced 321 hp, or 236 kW, at 7,400 rpm. Power was transmitted to the rear wheels through a five-speed manual gearbox. Combining a high-revving naturally aspirated M engine with the compact roadster body gave the car an exceptionally direct and sporting character.
One of the most exciting roadsters of its era
The BMW M Roadster attracted considerable attention from the motoring press when new. According to the BMW Museum, contemporary journalists regarded it as one of the most exciting cars of its time and particularly praised its handling on winding roads. Compared with the regular Z3 Roadster introduced in 1995, the M version offered significantly greater performance, more exclusive engineering and a much sharper driving experience.
Distinctive M features
The M Roadster differed clearly from the regular Z3 through more aggressive bumpers, a wider rear body, M-specific wheels and four distinctive exhaust outlets. Inside, it featured an M steering wheel, sports seats and additional instruments in the centre console. The chassis and brakes were also upgraded to cope with the substantially greater performance.
250 km/h
The European S50-powered M Roadster had an electronically limited top speed of 250 km/h and accelerated from 0 to 100 km/h in approximately 5.4 seconds. Its naturally aspirated straight-six, five-speed manual transmission and rear-wheel drive represented a particularly traditional BMW M formula at a time when electronic driver aids were still relatively limited.
The S54 engine
In 2001, the M Roadster received the newer S54 straight-six engine derived from the E46-generation BMW M3. Displacement increased to 3,246 cm³ and European output rose to 325 hp. Visually, the later S54 version remained very similar to the earlier S50-powered cars, making the two versions difficult to distinguish at first glance.
15,322 cars
The BMW M Roadster was produced from 1997 until 2002 exclusively at BMW Plant Spartanburg in South Carolina, USA. According to the BMW Museum, a total of 15,322 cars were built. The M version was therefore considerably rarer than the regular Z3 Roadster and has become one of the most desirable members of the Z3 family.
Historical significance
The Z3 M Roadster demonstrated how effectively BMW M engineering could be adapted to a small open sports car. Its combination of a powerful naturally aspirated straight-six, rear-wheel drive, manual transmission and two-seat roadster body created an unusually direct driving experience. BMW later developed the same basic idea further with the Z4 M Roadster.
Model in the collection
The BMW Z3 M Roadster (E36/7) in my collection was produced by Minichamps. It is a BMW dealer model.
Technical data in brief
Production period: 1997–2002
Production location: BMW Plant Spartanburg, South Carolina, USA
Body style: two-seat roadster
Engine: 3.2-litre straight-six
S50 displacement: 3,201 cm³
S50 power: 321 hp / 236 kW @ 7,400 rpm
S54 displacement: 3,246 cm³
S54 power: 325 hp in European specification
Transmission: 5-speed manual
Drivetrain: rear-wheel drive
0–100 km/h: approximately 5.4 seconds
Top speed: 250 km/h, electronically limited
Production: 15,322 cars
Special feature: BMW M3 engineering combined with the compact two-seat Z3 Roadster
Photo of the real car, BMW Museum. Photo: Sten-Patrick Kreek