The McLaren 650S Spider is mechanically identical to the 650S Coupé and is fitted with the unique McLaren M838T twin turbo V8 engine, producing 650PS (641 bhp) and 678 Nm (500 lb ft). This means a 0-100 km/h (62 mph) sprint of 3.0 seconds, identical to the Coupé, and 200 km/h (124 mph) is reached in 8.6 seconds, only 0.2 seconds shy of the fixed-head model. Maximum speed is 329 km/h mph (204 mph). Fuel consumption and emissions remain the same for the 650S Spider, returning 24.2 mpg (11.7 l/100km) on the EU combined cycle and 275 g/km.
The carbon fibre MonoCell chassis at the heart of the McLaren 650S requires no additional strengthening or reinforcing in open-top guise, and gives the 650S Spider identical handling and ride, and virtually identical straight-line performance figures. The overall weight of the 650S Spider is 1,370 kg (dry), an increase of only 40 kg over the Coupé, with this additional mass coming from the Retractable Hard Top and roof mechanism, and is less than any other car in its class.
The two-piece Retractable Hard Top can be automatically raised or lower in less than 17 seconds, and can be activated while stationary or at any speed up to 30km/h (19mph).
As with the 12C Spider, the 650S Spider uses a heated glass rear window, operating independently of the roof. With the roof down, the rear window acts as a wind deflector, reducing cabin buffeting. Roof up, the rear screen can be lowered to allow more engine noise – and driving drama – into the cabin, and for a semi-open top driving experience even when it is raining. When down, the roof is stowed beneath a body-coloured hard tonneau cover incorporated in the twin rear buttresses. With the roof raised, the area beneath the tonneau cover can be used as additional luggage space.
McLAREN 650S SPIDER SPECIFICATIONS: V8 Twin Turbo / 3799cc | ongitudinal Mid-Engine, RWD | 650PS power | 678Nm torque | 7-speed SSG transmission | 4512mm length | 2093mm width | 1203mm height | 1370kg dry weight | 2670mm wheelbase | 10.28kpl fuel consumption | 329kmph maximum speed | 0-100kmph in 3seconds | 478 bhp/tonne power to weight ratio