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The Top Gear car review: BMW M3 CSL
For:The way it looks, the way it drives, its authentic lightweighting
Against:We hate to be predictable, but its SMG transmission ain't the best
What is it?
Coupe, sport, lightweight. BMW’s only applied the CSL badge to two cars in its history: the 3.0 CSL, a homologation hero nicknamed The Batmobile, and this oh-so-delicately styled special edition of the E46 BMW M3, introduced in 2003. All credit to M Division, really – it’s surely kept the letters trademarked and could have slapped them on a number of its recent products – the latest M2 CS, for instance – but it clearly knows that L at the end needs to be earned.
This M3 certainly did. It was 110kg lighter than the stock M3 of the time, which is considerable when there’s still two seats in the back. Its dieting was much more nuanced and considered than simply flinging superfluous bits in the skip (though BMW would let you lose the stereo and air con if you wanted to).
There’s its carbon fibre roof. Now a staple on even two-tonne M8 Gran Coupes, but the M3 CSL pioneered it. Other areas – the rear diffuser, front skirt and interior panels – used motorsport-derived composite materials while the bonnet was made of aluminium and the rear window from thinner glass than standard.
Think that’s nerdy? There’s also a carbon airbox hooked up to the engine, losing yet more grams while giving the 3.0-litre straight-six a newly nape-prickling intake noise. BMW also fiddled with the cams and valves to liberate another 17bhp, the CSL producing peaks of 355bhp and 273lb ft peaks.
Bundle that in with the 1,385kg kerb weight and 0-62mph took 0.3secs less, at 4.9s. The M3’s electronically limited 155mph top speed remained… unless you walked into the showroom clutching a racing licence, in which case they’d loosen it up to 174mph. And to think you now get a similar gain by lobbing another two grand at VW when you buy a Golf R.
But none of the above are the CSL’s biggest talking point. That’s nestled between the two bucket seats up front, the stubby little cylindrical lever that clicks between reverse, neutral, and first gear. M Division ditched the M3’s stock manual gearbox and replaced it with an automated single-clutch transmission that changed… gear… quite… slowly.
Like a blemish on a supermodel’s face, it diverted many people’s attention away from all the other wondrous stuff the CSL could do. The speed at which paddleshift gearboxes have developed since the early 2000s has only exacerbated how jerky and reluctant its shifts could be. But what happens when we revisit the M3 CSL – and that transmission – knocking on for two decades later?