Bmw i8 how much does it cost. I go through cars very frequently and i feel tremendously blessed to have owned a lot of great sport vehicles like the honda s2000 subaru wrx sti mitsubishi lancer evolution and prior to the m4 the m235i xdrive. I would like to share a few things about my brand new bmw m4. The 35i also delivers the performance that i wanted in a vehicle. Being fun to drive is not just a bonus for me.