The M600 comes in three specifications, the standard; which uses a fibre glass body; the carbon sport which uses a carbon-fibre body and the Speedster which is basically a targa top version. The M600 is hand-built by a team of 20 workers at the company's Leicestershire facility. The M600 uses a steel backbone and aluminium chassis which is the same chassis used on the stillborn M15. The standard model uses carbon-fibre for vital body parts of the car and this allows it to have a curb weight of 1,250 kg (2,756 lb), although when independently tested, the standard model weighed 1,305 kg (2,877 lb).[3]

Engine and transmission
The M600 uses a 4.4 L (4,414 cc) Yamaha-built Volvo B8444S 60º V8 engine which is also used in the Volvo XC90 and S80. The engine used in the M600 is manufactured by Motorkraft in the US from B8444S crate engines with Garrett AiResearch twin-turbochargers equipped with variable boost. This allows the buyer to choose from variable power outputs ranging from 450 hp (336 kW; 456 PS) (Road setting, 0.6 bar (8.7 psi) pressure), 550 hp (410 kW; 558 PS) (Track setting, 0.8 bar (12 psi)) and 650 hp (485 kW; 659 PS) (Race setting, 1 bar (15 psi)) through the use of a switch present on the dashboard. The engine also features a MoTeC M190 and Injector Dynamics ID725 electronic fuel injection. It has a compression ratio of 9.50:1. It uses an Oerlikon Graziano transaxle six-speed manual gearbox and has the redline set at 7,000 rpm.[4] At least, a pre-production variant of the Speedster is also equipped with an automatic gearbox.[5]

Brakes
The M600 uses steel brake discs with six piston calipers at the front and four piston calipers at the rear. The brakes are designed by Britain-based braking specialist Alcon. Owing to the driver focused nature of the car, there is no Anti-lock Braking System installed and the brakes have limited servo assistance.

Interior

Interior with the Carbon Sport package
The interior of the car has twin hide upholstery and gloss carbon-fibre trim as standard. Buyers have the choice to choose from leather, suede, or alcantra upholstery along with trim choices of knurled wood or carbon fibre and wool carpeting. The switches and instrumentation are bespoke to the M600, although some components are shared with Jaguar and Aston Martin models. The car is equipped with an adjustable steering column and driver's seat while the pedals are offset to the left. The pedals are adjusted according to the owner's preference in order to provide a good driving position. A highlight of the interior is the engine power control knob, similar to Ferrari's Manettino dial, which allows the driver to choose from variable engine power outputs along with related turbo boost pressure (Road, Track and Race). The knob is present ahead of the gearshift knob on the dashboard. A traction control switch activates the limited traction control which is present to avoid oversteer. The interior is based on simplicity and is driver focused, inspired by the Ferrari F40 and due to this, it does away with climate control and modern infotainment systems.[4][6]