It used to be, but now it’s extremely limited.
Their own language straight from their website says
12-month, unlimited mile warranty, upgradeable for an additonal 5 years*** covering replacement or repair of defective components within the following systems: engine, transmission, drive axle (front and rear), steering, suspension, brakes, electrical, air conditioning
That leaves out so many of the common failure points of a modern car, things that can throw a CEL or leave you stranded. Just off of the top of my head
Turbo and super chargers + related parts
Radiator and cooling system
Ignition, alternator, starter etc
All the sensors (O2, MAF, EGR, etc)
Gaskets & seals
Manifolds
Infotainment & displays
ACC, BSM, AEB, FCW, RCTA, LKAS or any other aspect of a modern safety suite
Headlights
Sun or moonroof
48v or PHEV systems etc etc if applicable
Between parts and labor a lot of these can be very expensive to fix on a late model luxury car