The McLaren W1 uses its new MHP-8 4.0-liter turbocharged V8 and a hybrid system to make 1,258 HP. The automaker says this is the quickest road-legal McLaren ever, and it bests the McLaren Senna by 3 seconds on the company’s Nardo reference track.

British carmaker McLaren has gone official with its latest W1 supercar, arguably its great achievement as well. The plug-in-hybrid makes 1,258 horsepower, packs Formula 1-inspired aerodynamics, and has the lightest carbon-fiber monocoque in a McLaren yet.

The new hyper hybrid hits 1,258 bhp, is limited to 217 mph, has DRS and an airbrake, and can come to a halt from 124 mph in just 100 meters. Yet none of this is the car’s real party piece.