The
M400 is the track variant of the M12. Its
power-to-weight ratio is over per ton, and is the figure from which its model name derives. It has and has been reported to do 0–60 mph (0–97 km/h) in as little as 2.97 seconds.
Car and Driver (March 2007) achieved a 0–60 mph time of 3.3 seconds and a 0–100 mph time of 7.52 seconds. Although often listed as 0-60 mph in 3.5 seconds, the M400 generally comes in at 3.2 seconds according to various publications and generally listed amongst the fastest accelerating cars. Noble indicates only that the car is capable of achieving 0–60 mph in under 4 seconds. Its top speed is listed as 185 mph (300 km/h). A top speed of has been achieved by Noble's former press officer. Lateral Gs are reported in excess of 1.2. It has both a 3-point seatbelt and a 5-point harness. The most notable differences from the M12 are the use of forged pistons, Universal Turbos Ltd Supplied Garrett T28 turbos, a front anti-roll bar, stiffer springs, different shocks,
Pirelli P Zero tyres, a smoother gear shifter, and a slightly narrower central tunnel as the driver now sits a bit more central than previous models. Exterior differences remain subtle. The colour scheme tends to incorporate anthracite (Gris) wheels, rear wing supports and wing ends but some examples maintain silver wheels and supports. The front splitter is now removed (Although many owners opt to have this put on). The main change is the addition of side pods to enhance air into the system and to create a visual impact. Air conditioning is now an £1,995 option and adds to the weight. The interior has an added oil gauge that resides next to the boost one. Additionally the
Sparco Alcantara seats and finishings differ to the other Noble's (Alcantara is one third the weight of leather). The Noble M400 won the car of the year award in 2005 for one publication. The M400 is designed to be an outstanding track car that is also pleasant to drive on the road. With just 75 examples made (UK/Europe) this version is sought after and rare. ==Noble M14==