It’s a warped world we live in when the BAC Mono Cup’s 335bhp power output is, frankly, not much to write home about. Smart cars, MG family hatchbacks, even the ‘Build Your Dreams’ Seal delivers more. The horsepower arms race is well and truly out of control.

But with that, there’s another performance-critical metric that has seemingly fallen by the wayside. Weight. Your average family hatchback is now in the 1.5-tonnes category. Even some ‘track-focused’ cars at flirting with two tonnes.

The Mono Cup? 540kg. About the same as a thoroughbred racehorse. And that means that if you divide the BAC’s weight by the power, you end up with 620bhp per tonne. Or, in other words, about 260bhp per tonne more than a Porsche 911 GT3 RS…

Built by the Briggs Automotive Company up in Liverpool, the Mono Cup has been created to take part in its own one-make racing series yet – like other BACs – it’s available as an entirely road legal car. However, to find out what it’s truly capable of, we headed out to Portugal and the Circuito do Sol for a proper shakedown…

At a glance

Pros: Engine sound, braking, handling, approachability

Cons: Only seats one person… obviously

What’s new?

Clearly, BAC has not ripped up the rulebook and started again with the Mono Cup. After all, previous BAC products are faster on track than most road cars. So instead, it’s based its Cup car on the limited-edition and now sold-out R variant.

However, in keeping with the racing car brief, BAC has made a few choice changes. The wheels, for example, are carbon fibre and fully compliant with motorsport regulations (as is the rest of the car). At the front, they weigh just 3.9kg each with the rears coming in at 4.1kg. Versus the regular wheels, that’s a significant saving on unsprung mass.

Staying with the exterior, the bazooka-style air intake on the left-hand side has been replaced with a tidier, slightly less outrageous design that’s more in-keeping with the rest of the car. Also, just above sits an extra oil cooler for those sizzling temperatures in the Middle East.

There’s also new suspension geometry, stiffer springs and dampers, plus four-way adjustable Öhlins rather than two-way like in the Mono R. What’s more, the scrub radius has been tweaked in order to work with the Pirelli slicks (made specifically for the Mono Cup car).

A new stainless steel exhaust system also saves 5kg and contributes to a total 26kg weight saving over the model year 2026 standard car. An FIA-standard bag fuel tank, meanwhile, helps with further weight savings. Finally, a built in Racelogic data-logging system allows for lap-timing, evaluation and telemetry while aerials mounted on the nose mean live streaming from the car is possible.

Incidentally, that one-make Mono Cup championship looks promising on paper. Slated to start in the Middle East at the end of 2026, the racing should be fast, loud and close with partial reverse grids and heat formats proposed. Keep your eyes peeled for more info on it later in 2026.

What are the specs?

Power and weight, as we know, are 335bhp and 540kg (dry) respectively. Torque is 243lb ft and 0-62mph – while not confirmed – is likely just under 3 second. A carbon brake setup similar to the one found in the Mono R is standard, while the 2.5-litre Ford-sourced but Mountune fettled dry-sump 4cyl naturally aspirated engine is largely the same. As is the tubular chassis and graphene-infused carbon body panels underpinning the basic look of the car.

One thing that is conspicuously absent from the Mono Cup is a plethora of hardcore wings and spoilers that would complicate an otherwise sleek and surprisingly delicate design. The result is that the Mono Cup makes just 126kgs of downforce at 150mph. Compare that to the Porsche 911 GT3 RS referenced earlier and it’s a fraction of the amount produced at a similar speed.

Rather, the Mono Cup is all about mechanical grip and driver skill. What’s more, without a trail of dirty air in the wake of each car the racing should be close and hard-fought with plenty of drafting opportunities.

How does it drive?

Starting up and setting off is a surprisingly easy task – once your eardrums have recovered from the initial fire-up. Honestly, without a helmet on, the cold-start is an event in itself. There’s no synthesised sound here, it’s all brilliantly raw and real.

Trickling out of the pitlane, I use the clutch pedal to get going but after that the six-speed sequential Hewland gearbox requires no further assistance from my left foot. Instead, that’s focused on the braking because, like most single seaters, it’s the way this car stops that immediately grabs my attention.

BAC spent two years honing the ABS system and, like the other driving aids (TC and ESC), it’s tied to four available drive modes – Road, Sport, Track and everything (but ABS) off. The aim was to get a system that provides excellent feel with minimal interference, as well as one that can be programmed for greater stability or improved rotation under braking.

The result is, in a word, exceptional. You can absolutely stand on the anchors and marvel at how quickly the Mono Cup scrubs off speed without giving that odd rumbling sensation under the pedal as ambition overtakes grip. Use a little more finesse, however, and there’s so much information and nuance at your toe tips.

It’s especially impressive in Track mode, where, despite the fairly safe, front-limited setup on our car, the slight under-rotation allowed in the rear wheels gives a beautifully intuitive amount of slip going into corners and really helps get the car turned in.

Pair that with the heavy but vibrant steering, plus the information communicated via your backside and the experience is about as pure as possible before things start to get silly. Indeed, the Mono Cup demands respect – even in Road mode – but the eventual push towards its limits happens far more comfortably than should be possible in something quicker than a Formula 4 car around a lap of the Silverstone GP circuit.

BAC Mono Cup front three-quarter tracking

The initial temptation is to respond to the noise (more on that in a sec), the speed, the physicality and vibrations of the car with a firm hand. Yet if you relax your grip on the wheel, let the brilliant Öhlins suspension feel out the undulations in the road and guide you accordingly, the experience is far more rewarding. It’s so precise, so tactile and a million miles away from the impressive but often slightly inert track-driving experience of modern supercars.

And that’s before we get onto the sound. Start-up is one thing, full-bore under load to 9k RPM is something else. It’s a hilariously loud car. Laugh-out-loud vocal. The anger within those four cylinders is something to behold. Even with a helmet on and the wind bouncing off my helmet the soundscape is like a battlefield. It may not be the orchestra of Italian exotica – instead it makes its own metallic symphony – but the result is no less impressive.

There’s zero shortage of outright pace but the lack of low-down torque is noticeable. All the good stuff is high up and you need to work to maintain the mid-corner speed so as not to fall out of that power band. Keep it there, mind, and the feeling is like being electrocuted and launched from a catapult all at the same time.

A special nod must go to the six-speed Hewland gearbox, too. It’s surprisingly docile at low speeds, yet start to press on and the changes are addictive. Brilliantly concise and sharp, it puts your average dual-clutch ‘box into perspective and is an event all on its own.

What’s it like inside?

‘Inside’ is a word used loosely in this context. But the good news is that, unlike your average Formula 4 car, the Mono Cup has zip pockets for your keys and phone. The pedal box is also surprisingly roomy, plus the removable bespoke steering wheel (finished in the same material that Adidas uses in its running shoes) is a joy to hold. Switching drive modes could be easier, but BAC is working on a fix for that.

What’s more, a small frunk allows for helmet storage should the need arise. And, given BAC will fit a FOC road conversion package to the Mono Cup upon request, there’s every reason you may need a secure place to store your lid while grabbing a bite to eat at the pub.

Verdict

There’s no denying that £330k is a lot of money for a car with one seat and an incredibly niche use case. However, as we know, the market is there providing the car can deliver a truly one-off experience – which the Mono does emphatically. We’ve only sampled it on circuit, but the sound, the performance and the relative accessibility of it is deeply enticing.

Out on track, it’s far more enjoyable that the latest generation of multi-million pound supercars chiefly because it sounds better, weighs a fraction as much and does not overcomplicate. It’s an old-school thrill served up on a surprisingly friendly, intuitive platform, yet there’s just enough peril to keep the adrenaline sky-high for those that seek it.

What’s more, the relative lack of downforce feels like a bit of a masterstroke. As, big srto is mighty handy when you’re trying to set a Nurburgring lap record, the benefit to the average user is questionable. Instead, the Mono Cup keeps things simple but beautifully honed. In 2026, it’s a rare treat.