In 1971, BMW and Karmann decided to explore the possibility of a lightweight performance variant of their E9, after seeing success on track with tuner Alpina.
A Lightweight Transformation
Taking 169 vehicles from the original CS production run, engineers set about stripping weight. Specifically, this involved fitting aluminium doors, bonnet, boot, roof, and lightweight steel wings. Still not content, they replaced the side and rear windows with Plexiglass panels, fitted thinner carpets, and removed the power steering, sound insulation, and electric windows. The result? A 200kg weight reduction, leading to a significant improvement in performance. Consequently, 21 were dubbed Ultra Lightweights, 21 were raced by Alpina and Schnitzer in Group 2 Touring Cars.
Engine Upgrades for Racing Success
Additionally, to qualify for the over 3-litre division, the engine was rebored to 3003cc and its fuel system converted to Bosch injection. In road trim, this enhanced the power output to around 200bhp, offering impressive performance both on the road and track.
The Birth of BMW Motorsport GmbH
A separate division within BMW AG, which later became BMW Motorsport GmbH, developed the CSL. Though it does not wear the M badge, many enthusiasts consider the CSL the first M car, marking a significant step in BMW’s motorsport journey.
The Legendary ‘Batmobile’ Aero Package
As the first 169 Ultra Lightweight CSLs set the stage, the ‘Batmobiles’ brought the story to a thrilling close. BMW, needing further homologation for aero and power improvements, developed a 3.2-litre version with massive spoilers. These distinctive aero additions earned the model its famous nickname – ‘Batmobile’. Additionally, this final version of the CSL was produced exclusively in left-hand drive, with two batches: 110 cars in late 1973, followed by just 57 units in 1974-1975.
A Royal Connection and Unique History
I photoed this particular car at Concours of Elegance 2024. It was built on 25th February 1974, is one of the 57 special-order, phase-two CSL ‘Batmobiles’. Moreover, it was the 22nd built and was first delivered to Bahrain for the Royal Family’s use. Originally ordered in Chamonix white, it was quickly repainted in Golf Yellow.
From Barn Find to Full Restoration
After a brief stint in Bahrain, the ‘Batmobile’ accumulated only 36,000km over four owners before its current custodian acquired it. Discovered as a barn find, having sat unused for three decades, the car was restored when it arrived in the UK. Upon uncovering the original Chamonix white paint under the yellow, it was decided to return the car to its factory specification. Remarkably, despite its long storage period, the 1974 BMW E9 CSL ‘Batmobile’ retains all its original body panels.
Technical Specifications
Engine – 3153cc / inline-six / naturally aspirated / SOHC
Transmission – Four-speed manual, RWD
Power – 206bhp
Torque – 211lb ft
Top Speed – 137mph
0-60MPH – 7.3secs Weight – 1270kg
What a iconic and very cool car. What do you think of these cars? This car really caught my attention and made it into my top 10 cars at the 2024 Concours of Elegance. Check out that top 10 here.
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