As discussed above, LPG car conversion involves the addition of an LPG tank
, usually fitted in the boot, and a fuel choice switch that enables the drivers to change manually the source of fuel for the car. Additionally, an LPG converted car needs to have a filling system (the position of which is subject to legislation), the nozzle used at the pumps is not universal between countries and you may need to buy a specialised adapter if driving abroad. LPG tank sizes vary and are suited to the size, make and model of the car being converted.