The Noble M12 is a two-door, two-seater model, available in three coupe variants (GTO-3, GTO-3R and M400). A convertible variant (The M12 GTC) has been shown at motorshows but is yet to make production. All versions are powered by modified turbocharged Ford Duratec V6 engines. The standard M12 has a 3.0-litre, twin Garret turbo-charged engine, which produces 310 bhp (231 kW).

All M models have a full steel roll cage, steel frame, and G.R.P. (fibre glass) composite clam shell body parts. These cars are extremely lightweight and stiff. Although looking to be track derived, the M12 performs very well on both road and track, with surprisingly good ride quality, but a rigid feel. This is achieved by having no anti-roll bars on the car (with the exception of the hardcore M400). This allows suspension to be made hard without making a back breaking ride.

The GTO3R weighs 2380 lb (1080 kg), has 352 bhp (262 kW) and does 0-60 mph (0-97 km/h) in 3.8 seconds. Its top speed is listed at 170 mph (274 km/h). Lateral Gs are reported in excess of 1.22.

The M400 weighs 100 lb (45 kg) less (no A.C.), has 425 bhp (317 kW) and has been reported as doing 0-60 mph (0-97 km/h) in 2.97 seconds, although the maker modestly lists it as under 4.0 seconds. Its top speed is listed at 185 mph (298 km/h). Lateral Gs are reported in excess of 1.4. The model designation M400 is derived from the fact that the power and weight specifications for the car correspond to 405 bhp (298 kW) per tonne. It has both a 3 point seatbelt and a 4 point harness. Upgraded Pirelli P Zero tyres, a front anti-roll bar, a smoother gearchange and bigger turbos all make the M400 the M12's big brother. Amazing on the circuit, and pleasant to drive on the road.