The BMW M CSL prototypes


Secrets from the BMW M garage.

The BMW M CSL Prototypes.Secrets from the BMW M garage.

Competition, sport, lightweight: Attributes that have always characterized the sportiest M automobiles. Beside the well-known models like the BMW 3.0 CSL from 1973, the BMW M3 CSL from 2003 and the new BMW M4 CSL, the engineers at BMW M have repeatedly asked themselves over recent decades how else one could interpret lightweight construction and performance improvement. And with which BMW M automobiles.

We wondered what became of these thoughts. In a nutshell: many were realized – albeit as prototypes. Experience the impressive, never-before shown unique models and innovation carriers in the video: Come with us to the most secret garage at BMW M.

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The secret BMW M Garage “CSL special part 1”


The secret BMW M Garage “CSL special part 1”



Strictly limited: the new BMW M4 CSL.

BMW M and CSL.

For the last 50 years, BMW M has stood for fascinating sports cars, the ultimate in driving pleasure and adrenaline-fuelled motor racing. Whether on the world’s racetracks or street-legal – the M emblem is a guarantee of power and high performance. And close associates of the most powerful letter in the world are the letters CSL, which stand for Competition, Sports and Lightweight. Also known in the early years of BMW M as Coupé, Sports and Light, the abbreviation has long since gained icon status.


The letters are synonymous with the characteristic BMW M maximum racetrack-capable high-performance. They also stand for the developers’ typical M pioneering spirit which was born with the formation of the company in 1972. Be it BMW 3.0 CSL, BMW M3 CSL or BMW M4 CSL – in the development focus of these vehicles was always the will to shift boundaries, achieve new benchmarks and raise the super-sporting BMW to a new level.

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BMW M CSL Prototypen

BMW M4 CSL: Fuel consumption in l/100 km (combined): 10.1-9.9 (WLTP); CO2 emissions in g/km (combined): 227-224 (WLTP)


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  • The models illustrated include optional equipment.

    Due to regular software updates, screen designs in the communication may differ from the actual screen design in your car.

    Official data on power consumption and electric range were determined in accordance with the mandatory measurement procedure and comply with Regulation (EU) 715/2007 valid at the time of type approval. In case of a range, figures in the NEDC take into account differences in the selected wheel and tire size; figures in the WLTP take into account any optional equipment. WLTP values are used for assessing taxes and other vehicle-related charges that are (also) based on CO2 emissions, as well as for the purposes of vehicle-specific subsidies, if applicable. Where applicable, the NEDC values listed were calculated based on the new WLTP measurement procedure and then converted back to the NEDC measurement procedure for comparability reasons. For newly type-tested vehicles since 01.01.2021, the official data no longer exist according to NEDC, but only according to WLTP. For more information on the WLTP and NEDC measurement procedures, see

    For further information about the official fuel consumption and the specific CO2 emission of new passenger cars can be taken out of the „handbook of fuel consumption, the CO2 emission and power consumption of new passenger cars“, which is available at all selling points and at

    All vehicles, equipment, combination possibilities and varieties shown here are examples and can differ in your country. In no way do they constitute a binding offer by the BMW M GmbH. Visit your local BMW website or see your authorised BMW M Retailer for accurate details on the offers in your country.