3.8-litre twin-turbo V8, now delivering 737hp and 530lb ft
electric motor, incorporated directly into the engine block casting. This delivers 179hp and 192lb ft on its own, enough to enable the P1 to glide around city centres in eery silence for up to six or so miles
the electric motor has been tuned to fill in any gaps in the V8's power delivery, boosting low-end response before the turbos spool up
DRS button, reducing the rear wing's drag by nearly a quarter for increased top speed
IPAS (Instant Power Assist System) that lets you manually deploy the electric motor's 179hp