Bulb size & fitment reference

Smart ForTwo
Bulb Size Guide

Get the bulb-size answer first, then check factory-system differences and position-specific notes before buying.

Select Your Vehicle

Quick Answer for 2024 Smart ForTwo

Start with the positions you’re most likely to replace. Full fitment details are below.

Headlight High & Low Beam

Reverse Light

Brake Light

Center High Mount Stop Light

T10 / 194 / 168

Shop this position →

Full Bulb Fitment by Lighting Position

Find the bulb size for each lighting position and check any fitment notes before ordering.

Smart ForTwo (2023–2024) Bulb Size Chart

Lighting PositionBulb SizeNoteNext Step
Headlight High & Low Beam9003Shop position →
Fog LightH11Shop position →
Rear Fog Light1156 / BA15SShop position →
Brake Light1157Shop position →
Center High Mount Stop LightT10 / 194 / 168Shop position →
Tail Light1157Shop position →
Reverse Light921Shop position →
License Plate LightT10 / 194 / 168Shop position →
Dome LightT10 / 194 / 168Shop position →
Map LightT10 / 194 / 168Shop position →
Trunk LightT10 / 194 / 168Shop position →
View Fitment Options →

Smart ForTwo (2018) Bulb Size Chart

Lighting PositionBulb SizeNoteNext Step
Headlight High & Low BeamH4Shop position →
Fog LightH11Shop position →
Rear Fog Light1156 / BA15SWithout LED TailShop position →
Front Turn SignalBAU15SShop position →
Rear Turn SignalBAU15SShop position →
Brake Light1157Without LED TailShop position →
Center High Mount Stop Light912 / 921 / T15Shop position →
Tail Light1157Without LED TailShop position →
Reverse Light912 / 921 / T15Shop position →
License Plate LightT10 / 194 / 168Shop position →
Rear Side Marker Light1157Without LED TailShop position →
Dome LightT10 / 194 / 168Shop position →
Map LightT10 / 194 / 168Shop position →
Trunk LightT10 / 194 / 168Shop position →
View Fitment Options →

Smart ForTwo (2017) Bulb Size Chart

Lighting PositionBulb SizeNoteNext Step
Headlight High & Low BeamH4Shop position →
Fog LightH11Shop position →
Rear Fog Light1156 / BA15SWithout LED TailShop position →
Front Turn SignalBAU15SShop position →
Rear Turn SignalBAU15SShop position →
Brake Light1157Without LED TailShop position →
Tail Light1157Without LED TailShop position →
Reverse Light912 / 921 / T15Shop position →
License Plate LightT10 / 194 / 168Shop position →
Rear Side Marker Light1157Without LED TailShop position →
Dome LightT10 / 194 / 168Shop position →
Map LightT10 / 194 / 168Shop position →
Trunk LightT10 / 194 / 168Shop position →
View Fitment Options →

Smart ForTwo (2016) Bulb Size Chart

Lighting PositionBulb SizeNoteNext Step
Headlight High & Low BeamH4Shop position →
Fog LightH11Shop position →
Rear Fog Light1156 / BA15SWithout LED TailShop position →
Front Turn SignalBAU15SShop position →
Rear Turn SignalBAU15SShop position →
Brake Light1157Without LED TailShop position →
Center High Mount Stop Light912 / 921 / T15Shop position →
Tail Light1157Without LED TailShop position →
Outer Tail Light1157Shop position →
Reverse Light912 / 921 / T15Shop position →
License Plate LightT10 / 194 / 168Shop position →
Rear Side Marker Light1157Without LED TailShop position →
Dome LightT10 / 194 / 168Shop position →
Map LightT10 / 194 / 168Shop position →
Trunk LightT10 / 194 / 168Shop position →
View Fitment Options →
Fitment Reminder
Bulb size can vary by factory setup. If you're unsure which option applies to your vehicle, confirm your current bulb or select your configuration on the product page.