The astonishing McLaren Speedtail will make its first public appearance tomorrow at the Geneva Motor Show, but the automaker offered a preview of the vehicle to journalists today. On the stand, McLaren's Andy Palmer, vehicle line boss for the brand's Ultimate Series, divulged some specifications for the new top of the McLaren lineup. Here's what we learned.
The Speedtail's 4.0-liter twin-turbo V-8 offers up 746 horsepower and 590 lb-ft of torque. Combined with an electric motor that generates 308 hp and around 256 lb-ft of torque, that totals up to a peak combined output of 1035 horsepower and 848 lb-ft of torque. (If you're wondering why those numbers don't seem to add up, it's because the internal-combustion engine and the electric motor reach peak power at different points.)
The internal-combustion engine is, of course, related to the V-8 that powers the McLaren 720S and the Senna, though the engine block has been modified to accommodate the electric motor.
McLaren's first hybrid hypercar, the P1, could be driven in EV-only mode, but that won't be the case with the Speedtail. In the new car, the e-motor acts directly on the input shaft of the seven-speed Graziano dual-clutch gearbox. The e-motor is powered by a 115-lb battery that sits beneath the fuel tank, the latter of which is molded around the Speedtail's two passenger seats. The battery is four times more power-dense as the one in the P1, at half the weight, though McLaren hasn't released information about the battery's energy storage capacity.
McLaren quotes a dry weight of 3153 pounds for the Speedtail, which is a little heavier than the 2829-lb 720S. Impressively, that makes the Speedtail a little lighter than the 3197-lb P1.
What does all that hybrid power and weight savings adds up to? McLaren hasn't provided a 0-60 number, but the automaker promised the Speedtail will run from zero to 186 mph in just 12.8 seconds, on to a previously-reported 250-mph top speed. "All I can say is it's bloody quick," Palmer told us. We can't wait to learn more about this car, and experience it for ourselves.