Produced from 2004 to 2007 the M400 was built to replace the outgoing M12. Under the skin the M400 was Noble’s chance to address all the criticisms of their previous offering. That’s why the six-speed gearbox came with a completely new mechanism that actually allowed fast gear changes and the awkward driving position was fixed with a pair of Sparco seats. Moreover, engineers added stiffer suspension to cope with high cornering forces and more frequent track use, while changes in suspension geometry meant when the rear did break away it was more progressive and catchable.
Roush did much of the work to liberate 430bhp from the twin turbo 3.0-litre V6. There were high-lift cams, forged pistons, two larger Garrett T28 turbos, revised fuel pumps and larger injectors, while both oil and water cooling were also improved. The engine had a maximum power of 425bhp at 6,500rpm, with a torque figure of 390lb·ft. This power and a light weight allowed the M400 to achieve a power-to-weight ratio of just over 400bhp/ton, the figure for which it was named, and a 0–60 mph of 3.2 seconds.
This fantastic example was first registered in May 2005, and has more recently enjoyed a comprehensive rebuild by none other than Noble Motorsports, to the tune of £25,000. During the project the engine, gearbox and suspension were all carefully rebuilt to exacting standards. The car now presents in excellent condition mechanically, with good paintwork all round. Only 75 were made in total, and at the time of going to print this is the only known example for sale in the UK.
Showing 25,000 miles recorded, and offered with service books and all relevant invoices for works completed, this M400 offers truly hypercar performance for a relatively modest outlay.