Aston Martin has announced the One-77's 7.3-liter V12 engine is rated at 750 hp (559 kW / 760 PS) and 750 Nm (553 lb-ft) of torque.

Aston Martin has announced engine specifications for the One-77 supercar.

Beating earlier estimates, the 7.3-liter V12 is rated at 750 bhp (559 kW / 760 PS) and 750 Nm (553 lb-ft) of torque. While the company is staying mum on performance figures, a pre-production prototype hit a top speed of 220 mph (355 km/h).

As we have previously reported, the One-77 features a carbon fiber monocoque chassis and an inboard double wishbone suspension with Dynamic Suspension Spool Valve damping. Other goodies include a six-speed robotized manual gearbox, carbon ceramic brakes, and specially developed Pirelli P Zero Corsa tires.

Production will be limited to 77 units and the first deliveries are scheduled for early next year.

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