Background
“Like a Porsche GT3, you strive to live in the last few hundred rpm where the car sings and becomes its most violent. Then you pull the carbon paddle and the pneumatic six-speed Hewland gearbox – lifted straight out of an F3 car – gives you another cog and you go again.
It’s a truly addictive experience and an assault on the senses. Screw those new fancy 4D cinemas, if you want a true 4D experience, save money on the popcorn and drive one of these. Driving can’t get any more four-dimensional as you’re continuously buzzed with vibration, stimulated sensorily as compressed air is fired into your earholes and your eyes try to keep the local scenery in focus as things splat against your face at silly miles an hour.”
So said Top Gear when it reviewed the BAC Mono.
The Briggs Automotive Company – BAC – was founded by brothers Ian and Neill Briggs in 2009. Having spent many years providing design and engineering consultancy expertise to companies such as Mercedes-Benz, Porsche, Bentley, and Ford, the pair threw caution to the wind and decided to branch out on their own.
Their first car was the Mono; designed from a blank sheet of paper and using their years of experience and knowledge, this road-legal, single-seat, open-top, high-tech, pared-down machine first hit the road in 2011.
The exterior body panels are all made of carbon fibre, and while the tub isn’t, it’s still strong enough to pass the rollover tests the FIA imposed on Formula 1 cars in 2009 while being considerably cheaper to repair in the event of an off.
The Mono evolved over the years, starting life with a 2.3-litre Cosworth-fettled engine and ending it, after just 128 had been built, with a 2.5-litre Mountune power unit that churned out a reliable 305bhp.
And given the Mono weighs just 580kgs, 305bhp is sufficient to give it a power-to-weight ratio of 525 bhp per tonne, which led Pistonheads to describe it as “cataclysmically rapid”.
Those horses are channelled to the rear wheels via a six-speed Hewland sequential gearbox and an AP Racing clutch, with the gears being selected via a pneumatic semi-automatic closed-loop system that’s operated by steering wheel-mounted paddles.
Enough gobbledegook; what does it feel like? Second gear will take you to nigh-on motorway speeds, with sixth being geared for 160mph.
The differential is a Powerflow limited-slip jobbie of course, the driveshafts are made by GKN to BAC’s specification, and this example has traction and launch control.
It is essentially a Formula 3 drivetrain for the road.
Nigh-on perfect weight distribution of 48:52 front-to-rear is aided by an adjustable set-up that more closely mimics that of a race car than something you would commute it.
It also has just 100mm of ground clearance at the front and 110mm at the rear, yet contemporary reports describe it as having a better ride than a Lotus Elise.
“But the best thing about the Mono, what will send you into apoplexy if you are ever lucky enough to drive one, is the way it goes round corners. And the way it stops. And how much grip it can develop near the limit. And - biggest surprise of all - the way in which it so gradually gives up that grip if and when you push it too far.” So wrote Pistonheads when it tested one.
After car no 64 had left the factory, models were appended with a ‘W’, which indicated a reconfigured chassis for a little more internal space, opening up the market to normal-shaped folk.








