Beyond shared components, cars primarily use internal combustion engines configured as Inline (I3, I4, I5, I6), V-shaped (V6, V8, V10, V12), or Flat/Boxer (Boxer-4, Boxer-6) engines, along with less common Rotary (Wankel) engines. Additionally, the automotive landscape includes Electric Vehicles (EVs) powered by electric motors and batteries, various Hybrid powertrains (Mild, Full, Plug-in) that combine internal combustion engines with electric assistance, and Fuel Cell Electric Vehicles (FCEVs) that generate electricity from hydrogen.