In other areas, the CS is closer to the GTS, like in its rear diffuser or Michelin Pilot Sport Cup 2 tyres (note that BMW UK opted to equip its CS press demonstrator with more wet weather-friendly Michelin Super Sports). And in some, it’s bespoke CS, like in its 460hp output from the 3.0-litre, twin-turbo straight-six, which puts it 10hp above the Competition Package but still 40hp shy of the water-injected GTS.
What comes of this, as indicated by that earlier accelerative exploration, is a car that is sure to grab your attention, whether you’re braving your way from 0-62mph in 3.9 seconds or blipping down through the fabulously quick dual-clutch gearbox. Yes, the M4 CS is spiky if you’re not smooth with the throttle, but that can be regarded as much a part of its appeal as it is any inherent flaw.
The result is a car you learn to get the best from over time, building confidence in its many and varied driving modes and clever Active M differential, and enjoying a level of focus to the steering and chassis that is significantly more engaging than in a standard M4.
That it does all of this while still being comfortable enough to be used for long journeys, yet different enough to feel genuinely special is all part of the appeal. Whether that appeal is worth almost six figures is something only buyers can answer, and their enthusiasm might be tempered by the knowledge that unlike the GTS this CS is not a limited-edition model.
However, put the question of money to one side and there’s also little doubting that this car represents as good an interpretation of the current generation of M4 as we’ve yet seen.
Engine: 3.0-litre twin-turbocharged six-cylinder
Transmission: 7-speed dual-clutch automatic, rear-wheel drive
Top speed: 174mph
Price from: £89,130