BMW's rare E46 M3 CSL was fast, furious and fiercely exclusive when it launched in 2003. More than two decades on, this lightweight legend is still turning heads.

What is the BMW E46 M3 CSL?

The moment a shiny new car leaves the showroom forecourt, it tends to be replaced by something a little sharper, a touch faster and generally more appealing. But every once in a blue moon, a car comes along that is simply irreplicable – and the BMW E46 M3 CSL fits that description perfectly.

The CSL badge itself carries considerable history. It traces its roots back to the 3.0 CSL of the early 1970s, a lightweight homologation special – nicknamed the 'Batmobile' for its towering rear wing – that earned BMW its early touring car racing success. BMW revived those letters in 2003 for a stripped-back version of its third-generation M3, instantly placing the new car in storied company.

Behind the letters and numbers sits a two-door coupe powered by a 3.2-litre straight-six engine that covers the sprint from a standing start to 62mph in 4.9 seconds. That figure may sound ordinary today, with super-fast EVs arriving every week, but two crucial details set this Bimmer apart: it launched back in 2003 and its production run was strictly limited, giving it unique appeal.

It is regarded by those in the know as one of the greatest modern BMW M cars ever produced, so when the keys to this powerhouse were handed over, they were grabbed without hesitation – and with high expectations.

Why is the BMW M3 CSL so desirable?

Attach a 'limited edition' label to almost anything and desirability, along with rising value, becomes a major selling point. BMW capped the M3 CSL run at just 1,383 examples globally, of which only 422 right-hand-drive versions reached the UK, and demand was high. Buyers had a choice of just two colours – black or silver – and the combination of exclusivity, breathtaking performance and the legendary CSL name made it exceptionally sought-after.

The three letters CSL – Coupe Sport Lightweight – are enough to give any dedicated sports car fan goosebumps, and many viewed this car as the crowning glory of the third-generation M3. With carbon-fibre body panels and roof, lightweight glass and wheels, revised suspension and added power, BMW's M division drew on everything the top echelons of motorsport had to offer in 2003. The result was a track-focused coupe that remains as engaging to drive today as it was in its heyday.

Its appeal also endures because BMW did not build a direct successor for another two decades: the CSL name did not return until the 3.0 CSL of 2022, another ultra-limited, motorsport-inspired coupe. That long gap cemented the E46 version's standing among collectors and enthusiasts as a one-off of its era.

How fast is the BMW E46 M3 CSL?

A certain number of big-city dwellers have money to burn, and this is the type of car that would have attracted not only big spenders in 2003 but, more importantly, the devoted driving purists among them.

Even without getting too wrapped up in the numbers – and remembering the car hit the road 23 years ago – the performance figures cannot be ignored. Beneath the bonnet sits the beating heart of the BMW: a 3.2-litre engine developing 360hp and 370Nm of torque.

While that was not a huge power increase over the standard E46 M3, the CSL shed 185kg without any mechanical assistance. That combination of extra power and considerable weight loss produces performance figures that are not for the faint-hearted. As noted, the car sprints from standstill to 62mph in 4.9 seconds, and its top speed was electronically limited to 155mph.

What is the BMW M3 CSL like to drive?

Our hour behind the wheel of this beautifully crafted rear-wheel-drive model was time worth reliving over and over again.

The pair of front sports seats are manually adjusted, body-hugging and quite firm. But given that this model was engineered as a purist driver's car – sacrificing comfort and luxury in pursuit of sharper responses, a more engaging experience and exceptional dynamic ability – lightly padded seats are a small compromise. This exclusive BMW is guaranteed to make you smile.

The gear shifter is not the smoothest and controls a six-speed automated manual transmission, with paddles available for added fun. The balance, poise and grip through twisting New Forest roads were truly inspirational. One slight gripe is the absence of a traditional clutch and manual gearbox – something true race-bred cars offered in the early noughties. Notably, the CSL was only offered with this SMG automated manual gearbox, with no conventional manual option, a decision that still divides enthusiasts today.

As for the test car itself: the acceleration is very fast, even for an old girl, and the steering still feels responsive with ample driver feedback. It is fast, furious and exceptionally entertaining.

What technology does the E46 M3 CSL have?

Cars that are three years old can look dated inside, so it is little wonder this Bimmer shows its age in places – but the race-car vibe is very apparent. Instrumentation is refreshingly uncluttered, with none of the annoying bings or bongs that tell you that you are one mile over the speed limit or hugging the lane markings.

Instead, there are four dials, with the centre two displaying speed and revs, flanked by smaller dials for fuel and temperature. Electric windows are fitted, even for rear passengers, and physical controls abound – thankfully, touchscreens had not infiltrated cars back then – along with a CD player for your favourite tunes.

There is just a single pair of rear seats, another weight-saving measure, but rear passengers have enough room to sit comfortably. That said, they may need their dentist and chiropractor on speed dial after a longer journey.

Is the BMW M3 CSL suitable for city driving?

While the rich and famous rock up in their Porsche and Lamborghini sports cars, a nod to the days when driving was about character and performance as well as looks is a not-so-gentle reminder of happier times – and that is where this BMW comes to the fore. It is not glossy and not crammed with unnecessary gadgets and technology, yet few new cars will be this desirable in 23 years' time. By 2049, we will probably be ferried about in automated robo-taxis.

The limited production numbers give this car a sense of uniqueness that money often cannot buy. And then there is the engine noise – it sounds incredible. Engineers fitted a carbon-fibre airbox that amplifies the sound of air being sucked into the engine; it resembles feeding time in the Serengeti. If you have close neighbours you get on with, this is not the car for you.

How much does a BMW E46 M3 CSL cost to run?

When the M3 CSL went on sale it carried a hefty price tag for the time – £58,455 – but as with most limited-edition models, its value has risen significantly. A quick online search showed prices up to around the high £70k mark, with a few cheaper versions also available. One listing carried an asking price above £100k, and many of the examples spotted were 'price on application' listings. That trajectory mirrors the wider classic and modern-classic performance car market, where low-volume, analogue driver's cars from the era have attracted growing collector interest as newer performance models shift towards electrification and ever-greater automation.

Frequent fuel stops will be essential: the official combined figure was 23.7mpg back in the day, and real-world consumption today will be far lower. Carbon emissions of 287g/km will mean hefty tax bills, insurance costs will be high, and it is very wise to invest in a high-end immobiliser and a constantly monitored tracker.

Then there are the increasingly common zones open free of charge only to EV drivers. While owners will have to pay to enter zero-emission zones, the E46 M3 CSL is Euro 4 compliant, so it meets Ultra Low Emission Zone rules and most regional Clean Air Zone requirements – though checking ahead is advised, just to be certain.

Where can I get one?

If you still feel the urge to dip into your savings and buy a BMW E46 M3 CSL, search the classic car sections and browse the auction sites. It is a car that will bring plenty of added day-to-day expenses, but you could be the only person within a 1,000-mile radius with one on the driveway – and that is something money cannot always buy.