Minimax (2 kg, ABC powder) with BMW mounting bracket on the driver's seat.

Regardless of brand, automotive on-board types are either ABC or BC, typically 1 or 2 kg.

I've kept one in nearly all of my cars over the years. I slowed down an under hood fire years ago, in time for the fire department to arrive and fully stop the fire. Car was a write-off but the owner realized that he was fine and that the danger was minimized.

Unfortunately very few countries require this (Belgium still does, UK did many years ago, not required in our very safety conscious Switzerland). I know that somewhere, sometime, that I'll help someone who doesn't have one.

__________________
2002 Euro X5 (E53) 3.0 diesel (M57)
5 speed manual with UUC short shifter.
Pre-xDrive NV125 transfer case (chain & gears).
Factory Xenon headlights, Spyder LED tail lights
Updated vortex crankcase breather.
Motorsport dead pedal, factory fire extinguisher, factory first aid kit, factory F&R mud flaps, factory PDC

Bilstein B6 shocks F&R
Redline oil has replaced "lifetime" fluids (F&R diff, manual transmission, transfer case and P/S).
Dimple magnetic drain plugs in all compartments.