The Aston Martin Valkyrie is powered by a naturally aspirated V12 engine.
Its 6.5-litre engine was developed by Cosworth as the RA, using a 65-degree V12 layout. The engine alone produces roughly 1,000 horsepower and can rev to 11,100 rpm, an unusually high limit for a road car.
The Valkyrie is also a hybrid, so its V12 is not the entire powertrain. An electric motor and lightweight battery system, developed with Integral Powertrain and Rimac, add approximately 160 horsepower. Combined output is about 1,160 horsepower.
A common mix-up is confusing the Valkyrie with the later Valhalla. The Valkyrie uses a Cosworth V12 and is the more extreme, track-focused model; the Valhalla was developed as a more usable mid-engined hybrid supercar and uses a twin-turbocharged V8 in production form.