The modern Countach is based on the bones of the Aventador and features a hybrid powertrain similar to the one in the Sian supercar of 2019. Peak output here is 803 hp, which is a tad lower than the 807 hp of the Sian.
In both cases there's a small electric motor integrated with the transmission, added to provide a boost to Lamborghini's familiar 6.5-liter V-12 which on its own develops 770 hp in this application. The electric motor only aids the engine at speeds up to 81 mph, though it also recovers energy under braking, which it stores in a supercapacitor instead of a typical battery. Drive goes to all four wheels.