Gordon Murray T50: V12 supercar makes track debut in video

Like its revered McLaren predecessor, the rear-wheel drive T50 places its driver centrally in the cabin, as in a jet fighter. Its footprint is similar to that of the Mini Countryman (it’s smaller than the Porsche 911 and lighter than the Alpine 110) and it forgoes door mirrors for cameras to avoid adding to its 1.85m body width, so it should feel highly manoeuvrable in tight going.

The T50 was styled entirely in-house, with Murray himself the leader of the tiny design team. There are obvious references in its shape to the F1 — such as the compact size, the arrowhead front panel, the roof-mounted air scoop, the dihedral doors and the use of ‘ticket windows’ in the side glass — but strenuous efforts were made to make it look even more petite than its forebear.

There’s a major contrast between the graceful front end of the T50 and the extreme functionality of its rear end, which features large exhausts, business-like mesh for engine bay cooling, a giant underbody diffuser and a 400mm fan. The fan is driven by a 48V electrical system and its job is to develop downforce by rapidly accelerating the flow of air under the car. Murray says this “rewrites the rule book for road car aerodynamics”.

The fan, the diffuser and a pair of dynamic aerofoils on the body’s upper trailing edge combine to develop far more downforce than any natural system could and therefore develop levels of cornering grip hitherto unknown in supercars. There are six aerodynamic modes. Two of them, Auto and Braking, work automatically, depending on the car’s speed and the driver’s input. The others — High Downforce, Vmax, Streamline and Test — are selectable from the cockpit.

High Downforce is self-explanatory, while Streamline and Vmax are similar in that the former configures the aerodynamics with a “virtual long tail” by running the fan at full speed and retracting the active flaps on the top and bottom surfaces. Vmax runs the V12’s crank-mounted 30bhp integrated starter-generator flat out to contribute extra power in three-minute bursts. At speeds of above 150mph, the roof-mounted induction air scoop boosts maximum engine output to around 700bhp.

Impressive interior space is another theme of the T50. Its cabin is even roomier than that of the F1 (not to mention all modern rivals) and access to the centre seat is easier, because the floor is now flat. The analogue switchgear and instrumentation – very much designed in jet fighter style – are relatively simple but crafted to Swiss watch quality.

The two side-mounted luggage compartments are as roomy as those of the F1 but can now also be top-loaded. Murray may be selling a £2m-plus collector’s car, but he’s determined that it will be usable day to day.

“The T50 is entirely road-focused,” he said, “which is why it sets new standards for packaging and luggage space. It betters the F1 in every way: ingress and egress, luggage capacity, serviceability, maintenance and suspension set-up. Also, driver-selectable engine maps ensure a driving mode to suit every situation.”

Murray said the supercar his team benchmarked against most often during the T50’s development was actually the 28-year-old F1. That was because no one has since attempted to build a car with the same credentials: an ultra-light, centre-seat supercar with a turbo-free V12 and a manual gearbox.

The T50 is said to weigh just 986kg at the kerb – about two-thirds of the weight of what Murray insists on calling “an average supercar”. Keeping control of weight isn’t just about using exotic materials, he said; it’s a state of mind. The design team held weekly meetings about it. The T50’s carbonfibre tub chassis weighs less than 150kg with all panels. Every individual nut, bolt, bracket and fastener — about 900 of them — was individually assessed for weight-saving.

The transversely mounted six-speed manual gearbox, supplied by Xtrac and designed with a new thin-wall casting technique, is 10kg lighter than the already-featherweight ’box used by the F1. The Cosworth V12, meanwhile, saves another 60kg over the F1’s BMW-derived engine and much more compared with that of a Ferrari. Even the carbonfibre driver’s seat weighs only 7kg, and it’s 3kg for each passenger seat.