Comment by bayindirh

Manufacturers like Ferrari, Porsche and Lotus focus on HP per KG. This is why they build ultralight versions of their cars. Porsche's 911 GT series trade glass windows with plexiglass and badges with stickers. Ferrari omits carpets and inner body panels leaving welds bare. Lotus re-invents everything make things lighter and with less material.

Mercedes, Bentley and Bugatti likes to build road missiles. Fast and comfortable, luxurious cars with insane straight line performance and stats, but not made to be thrown from corner to corner in a track. Since these cars are heavier and have somewhat higher center of gravity, they can't pull higher G numbers on skid pads and tracks. They also have somewhat slower lap numbers (Maybe Mercedes' SLR McLaren is an exception to this, but it's half McLaren, so...).

If you want to go to the edge of it, see McLaren and Pagani. They take the track-optimized, lightweight car design to extremes. Esp. McLaren.

Edit: I mixed up CLK-GTR with SLR. My bad, brain haze. Sorry.