But it’s worth remembering that this is still the low-cost way into Audi’s coveted S-brand, and included in the price is a 228bhp 2.0-litre engine mated to a multi-plate clutch four-wheel-drive system.
Read the full Mini Cooper S review
If that combination appeals on paper, then you’ll probably appreciate the way the S1 goes down a road. Like practically all of quattro GmBH’s progeny, its supermini is primarily concerned with turning turbocharged torque - 273lb ft of it in this case - into forward motion.
By doing this more effectively than any of its two-wheel-drive rivals, the tiny Audi is nearly a second quicker to 62mph than the Mini.
It feels it, too. Through the first few gears, the familiar EA888 motor - usually labouring under the higher workload of bigger hatchbacks - makes the S1 properly ferocious. And because it comes without the slightly haywire lack of composure endemic to overpowered front-drivers, its potential never seems less than fully exploitable.
While it obviously can’t overcome a near 30bhp deficit, no one would accuse the new Mini of tardiness during get away.
All the old scamper is present and correct, enhanced by the better mid-range delivered by the upgrade to BMW’s larger 2.0-litre four pot and a 100kg weight-saving over the more mechanically complicated Audi.
Read the affordable fun special - Ford Fiesta ST3 Mountune versus VW Golf R
However, where the pair differ most is the way they turn straight line guts into cornering glee. As you might expect, it’s nonchalant accuracy versus darting excess - and it plays out differently depending on where you are.
On the road, the Mini’s jacked-up positivity and scything direction changes are intended to keep you on tenterhooks; as is the torque and bump steer which shimmy up the steering column.
It’s a level of interactivity the S1 can’t, or, more specifically, doesn’t even attempt to match. The car’s light but direct manual gear change and short wheelbase might make it rather perky for a fast Audi, but following the Cooper’s feverishness, it seems desensitised during fast A to B work - content enough to be blithely swift and composed.
Read the full Audi S1 review
Reach C though (Cadwell, in this case) and - much closer to their respective limits - quattro’s impassivity roundly trumps the Mini’s messy thrill factor. Asking more of the latter on a slender track tends to highlight the limits of its actual ability; reminding you, all too often, that the some of the car’s energising effect is an engineered-in over-reaction to input.
Thus a quick lap becomes more about the management of the Cooper’s occasionally brittle squirm, torque surfeit and high-speed understeer than a pleasurably involving experience. Commensurately, under the same conditions, the S1’s on-road coyness is suddenly made all the more alluring.
The car’s forthright capacity for precision, not to mention the assistance of the rear axle when things get dicey, aid and abet the kind of clean line you want on a circuit better suited to bikes.
Add in sufficient power not to be entirely overawed by the sight of a back straight, and the Audi driver tends to emerge in the pits the better satisfied. Consider the pair from further back, and it’s not impossible that particular circumstance wouldn’t transfer to the long driveway of ownership - after all, the S1 is less fussy within, more handsome without and bereft of the silly lifestyle image that still comes with a Mini.
Read the performance coupe special - Peugeot RCZ R versus Toyota GT86
For us though, the nagging suspicion that you’d paid nearly £7k more to have a bit less fun on the road (where it counts) would rankle too greatly over time.
The Cooper S is not a perfect specimen - as its instant relegation below the Fiesta attests to - but it’s decidedly good value considering the greater refinement, comfort, build quality and maturity now in evidence. Add in the impish grin factor that BMW purposefully makes it easy to find, and there’s no contest.
Price £24,900 0-62mph 5.8sec Top speed 155mph Economy 40.4mpg CO2 162g/km Kerb weight 1315kg Engine 4 cyls in line, 1984cc, turbocharged, petrol Power 228bhp at 6000rpm Torque 273lb ft at 1600-3000rpm Gearbox 6-spd manual
Mini Cooper S
Price £18,655 0-62mph 6.9sec Top speed 146mph Economy 49.6mpg CO2 133g/km Kerb weight 1235kg Engine 4 cyls in line, 1998cc, turbocharged, petrol Power 189bhp at 4700-6000rpm Torque 206lb ft at 1250-4750rpm Gearbox 6-spd manual
Get the latest car news, reviews and galleries from Autocar direct to your inbox every week. Enter your email address below: