Smart Forfour 453 (14-…) bulb types
Low Beam Headlight Lamp : H4
High Beam Headlight Lamp : H4
Front Fog Lamp : H16
Front Turn-signal Lamp : PY21W
Side Turn-signal Lamp : WY5W
Rear Turn-signal Lamp : PY21W
Stop Lamp : P21/5W
Back-up Lamp : W16W
Licence Plate Lamp : W5W
Room Lamp : W5W
Smart Forfour 454 (04-06) bulb types
Low Beam Headlight Lamp : H7
High Beam Headlight Lamp : H7
Front Tail Lamp : W5W
Front Fog Lamp : H8
Front Turn-signal Lamp : P21W
Rear Turn-signal Lamp : P21W
Stop Lamp : P21/5W
Back-up Lamp : P21W
Licence Plate Lamp : W5W
Stop Lamp : W2,3W