Is this a BMW M4 CSL? New hardcore M Division model ready to take on the 911 GT3

It doesn’t matter what this hardcore M4 will be called, because it’s going to hit hard when it arrives next year

BMW has been testing various M4 mules with some subtle aero and chassis upgrades for a while now, but things just got serious with this prototype that could signal the return of the CSL nameplate. 

Unlike previous prototypes which looked to feature little more than some tacked-on body upgrades, this one has a more substantial set of changes including a return to placeholder lighting units and an application of new bodywork for the bumper, bonnet and front wings. Intriguingly, BMW has also fitted a new grille insert with a cutout that looks plenty wide enough to fit an extra character on the badge that’ll inevitably adorn it.

Looking closely at the bonnet you’ll note that while there’s no obvious opening, it does have some cleverly blended cladding hiding what will almost definitely be a bespoke carbonfibre bonnet.

At the rear is a new boot lid with an M3 CSL-like moulded ducktail that’s completely different to the standard M4 spoiler. Again, using BMW’s lesser CS models as reference, they’ve generally featured a stick-on carbon lip over the top of a standard bootlid rather than an entirely new unit as seen on here, suggesting another bespoke carbonfibre component. 

The car also features a deeper front splitter, capped at either end with low-mounted flicks, and a unique wheel design hiding the gold brake calipers usually associated with BMW’s carbon ceramic brake package. This prototype is also running very serious Michelin Cup 2 R rubber, again signalling this is running hardware that’s a level up on comparative CS models. 

Any upgrades to the engine are typically impossible to spot from prototype cars like this, but the M4’s closed-deck S58 3-litre turbocharged straight-six is ripe for further modification despite its already strong 503bhp peak output. The question of whether a future M4 CS or CSL will retain rear-wheel drive or pick up the Competition's optional all-wheel drive is also one we’re looking forward to being answered. There is one sneaky powertrain detail we can spot though, and that’s the typical blue-hue of a titanium alloy being used on the visible exhaust box.

Whatever this mule ends up as, those in the market for an even more dynamic iteration of the M4 won’t have to wait long as BMW plans on revealing this hardcore model next year. With the standard Competition having made an excellent first impression, the foundations are already in place for an even hotter version to be something truly special, and we can’t wait to see what comes.

Recommended

Chevrolet Corvette C8 convertible 2021 review – American icon driven in EU-specification
Chevrolet Corvette C8 Cab EU review – front tracking
Chevrolet Corvette

Chevrolet Corvette C8 convertible 2021 review – American icon driven in EU-specification

The EU-spec Corvette is heavier and less powerful than we were led to believe, but is still a fantastic modern sports car with a distinct American fla…
8 Oct 2021
Porsche 718 Cayman GT4 2021 review – an all-time great
Porsche 718 Cayman GT4 cornering
Porsche Cayman GT4 coupe

Porsche 718 Cayman GT4 2021 review – an all-time great

For a combination of pure driver appeal and value, the Cayman GT4 has no rivals. An instant modern classic, if ever there was one.
4 Oct 2021
Porsche 911 Carrera 4 GTS 2022 review – middle child 992 shapes up
Porsche 911 GTS review (992) – front cornering
Porsche 911 Carrera

Porsche 911 Carrera 4 GTS 2022 review – middle child 992 shapes up

Two and a half years after the launch of the 992, the GTS treatment both adds and subtracts but does the result gel on the road?
21 Sep 2021
Lotus Emira First Edition priced from £75,995 – production to commence in 2022
Lotus Emira
Lotus Emira coupe

Lotus Emira First Edition priced from £75,995 – production to commence in 2022

First examples of the new Lotus Emira will roll off the production line early next year, with the entry-level four-cylinder to follow
20 Sep 2021

Most Popular

Officine Fioravanti Testarossa ­– stunning Italian revival revealed
Officine Fioravanti Testarossa
Ferrari Testarossa coupe

Officine Fioravanti Testarossa ­– stunning Italian revival revealed

Swiss firm reveals its first restoration based on the iconic Ferrari Testarossa Monospecchio
12 Oct 2021
2022 Honda Civic Type R spied – will it live up to its superb predecessor?
2022 Honda Civic Type R
Honda Civic Type-R hatchback

2022 Honda Civic Type R spied – will it live up to its superb predecessor?

The next-gen Honda Civic Type R has big shoes to fill, but first indications suggest it’ll have it sorted
13 Oct 2021
2022 BMW M3 Touring spied ahead of reveal
BMW M3 Touring
BMW M3 Touring

2022 BMW M3 Touring spied ahead of reveal

Photographers have spotted the upcoming M3 Touring testing on the Nürburgring before it reaches customers next year
14 Oct 2021