2023 BMW M4 CSL
2023 BMW M4 CSL

2023 BMW M4 CSL

With its next-level power and intelligent lightweight design, two-seater configuration, model-specific chassis upgrades and equipment features selected specially for the job at hand, the new BMW M4 CSL has track driving as its raison d’être. The genes the M4 CSL shares with its competition-spec sibling, the BMW M4 GT3, are also reflected in its performance attributes. In test runs on the Nürburgring’s Nordschleife circuit, the BMW M4 CSL posted the fastest lap times ever for a series-produced BMW car. On the version of the track traditionally used for comparison purposes – which is 20.600 kilometres / 12.8 miles in length and doesn’t include the straight at section T13 – it stopped the clock at 7 min. 15.677 sec. Its official and notarised lap time for the 20.832-kilometres / 12.943-mile circuit (the complete lap) was 7 min. 20.207 sec. Acceleration figures of 3.7 seconds from 0 to 100 km/h (62 mph) and 10.7 seconds for the sprint from 0 to 200 km/h (124 mph) are similarly impressive.

2023 BMW M4 CSL
2023 BMW M4 CSL

The M-specific control/operation system includes the M Setup button for direct access to numerous vehicle settings and two M buttons on the steering wheel for storing preferred configurations. Standard equipment also features the M Drive Professional system including M Drift Analyser and M Laptimer, plus the M Mode button for activating the ROAD, SPORT and TRACK settings. The likewise standard BMW Live Cockpit Professional comprises a fully digital screen grouping made up of an instrument cluster with a 12.3-inch screen diagonal behind the steering wheel and a 10.25-inch control display. The range of comfort-enhancing features and driver assistance systems fitted in the BMW M4 CSL are focused on the essentials, in keeping with its intelligent lightweight design approach and puristic vehicle concept. Standard specification includes automatic climate control, Park Distance Control, Front Collision Warning, Lane Departure Warning and Speed Limit Info. Two-zone automatic climate control, an alarm, and the Driving Assistant and Parking Assistant systems are available as options.

2023 BMW M4 CSL
2023 BMW M4 CSL

Model-specific equipment features give the BMW M4 CSL a distinctive balance between sports car purism, unrestricted everyday usability and exclusive premium substance. The M Carbon full bucket seats for the driver and co-driver are marked out by their self-supporting CFRP structure and purposeful rejection of comfort-enhancing features. They have a fixed backrest angle, forward/back adjustments can be made manually, and the seat height can only be adjusted in a workshop using a three-stage screw linkage. The M Carbon full bucket seats also have detachable head restraints and allow the integration of a six-point belt system. The M Alcantara steering wheel, anthracite-coloured headliner, Carbon Fibre interior trim strips, “CSL” badges on the seats, centre console and rear panel, plus M-specific displays also help to create the perfect on-board setting for concentrated driving pleasure. Merino leather trim with extended features and M seat belts are also standard. Two helmet storage units can be found in the rear compartment.

2023 BMW M4 CSL
2023 BMW M4 CSL

The model-specific power unit of the BMW M4 CSL is based on the same high-revving, six-cylinder in-line engine with M TwinPower Turbo technology found in the BMW M4 GT3 racing car. Its substantial performance reserves enabled a major hike in power without having to make any concessions in terms of stability or durability. Key to this power boost was an increase in the maximum charge pressure of the two mono-scroll turbochargers from 1.7 bar to 2.1 bar and model-specific tweaks to the engine management. The BMW M4 CSL’s engine develops peak torque of 650 Nm (479 lb-ft) between 2,750 and 5,950 rpm. Its maximum output of 405 kW/550 hp is produced at 6,250 rpm. The race-derived design of the 3.0-litre engine is focused squarely on high revs and maximum power development. The crankcase’s sleeve-free, closed-deck construction helps to make it extremely rigid, while the forged lightweight crankshaft allows it to handle extremely high levels of torque. Another special M-specific feature is the cylinder head core made using 3D printing techniques.

2023 BMW M4 CSL
2023 BMW M4 CSL

Both the cooling and oil supply systems are designed to handle the particular challenges presented by track driving. The twin-tailpipe exhaust system with electrically controlled flaps and weight-minimised titanium rear silencer additionally generates a racing-car-inspired, emotionally engaging engine note created especially for the new BMW M4 CSL. The drive torque produced by the engine is relayed to the rear wheels of the new BMW M4 CSL via an eight-speed M Steptronic transmission with Drivelogic. Model-specific mountings for the engine and transmission ensure the engine’s power is translated into dynamic performance in exceptionally rapid and direct fashion. The firmer connection of the engine and transmission to the car’s structure is clearly perceptible, especially under hard driving.

2023 BMW M4 CSL
2023 BMW M4 CSL

Its talent for innovation and racing-car know-how enabled BMW M GmbH to restrict the special edition’s DIN kerb weight to 1,625 kilograms. A standout power-to-weight ratio of 2.95 kilograms per hp (4.01 kg/kW) provides the ideal platform for a dynamically sublime driving experience. Fitting M Carbon full bucket seats reduced weight by around 24 kilograms on its own compared with the standard seats fitted in the BMW M4 Competition Coupé. 21 kilograms were saved by removing the rear seats and seat belts, integrating a partition and making the associated modifications to the luggage compartment. And chassis changes, including the addition of extra-lightweight M Carbon ceramic brakes and special light-alloy wheels, springs and struts, lowered the figure by around another 21 kilograms. Paring back the amount of soundproofing plus switching to ultra-lightweight sound insulation saved around 15 kilograms, while the use of components made from carbon-fibre-reinforced plastic (CFRP) deducted some eleven kilograms. For example, in addition to its CFRP roof, the bonnet and boot lid of the BMW M4 CSL are also hewn from this lightweight high-tech material, as is its centre console.

2023 BMW M4 CSL
2023 BMW M4 CSL

The stripped-back racing character of the BMW M4 CSL is underpinned by a time-honoured concept that harnesses cutting-edge development expertise and the latest technology to create an enthralling end result. “CSL” stands for “Competition, Sport, Lightweight”, referencing the critical role of weight-minimised design in achieving success in motor sport. The BMW 3.0 CSL developed by BMW Motorsport GmbH according to this same principle won the European Touring Car Championship at the first attempt in 1973. And the M4 CSL is also following in the tyre tracks of successful special-edition models from earlier generations of the BMW M3/M4, most notably the legendary BMW M3 CSL from 2003 and the BMW M4 GTS unveiled in 2016. For BMW M GmbH, the world premiere of the new BMW M4 CSL at the 2022 Concorso d’Eleganza Villa d’Este will be one of the highlights of its 50th anniversary year. Production of the special-edition model will begin – in a limited run of exactly 1,000 examples – at BMW Group Plant Dingolfing in July 2022.

2023 BMW M4 CSL
2023 BMW M4 CSL

Source: Reviews, BMW

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