LED number plate lights: UK vs US vs Germany
A small lamp with a specific job: make the plate readable at a set distance in white light, without throwing a visible beam backwards.
All three markets reach the same verdict, conditional. What differs is the rule each one uses to get there, which is the third column.
| Market | Verdict | The rule that decides it |
|---|---|---|
United Kingdom DVSA / GOV.UK |
Conditional | White light, must illuminate the plate It must not shine a visible white beam backwards or dazzle. Blue-tinted or coloured plate lights are not compliant and the lamp must work for the test. |
United States EPA, NHTSA and state codes |
Conditional | White, plate legible at distance White LED plate bulbs are legal and often brighter than the originals. Coloured plate lights of any tint are illegal everywhere. |
Germany StVZO / KBA |
Conditional | Complete e-marked units need no entry Retrofit LED bulbs need their own approval whose compatibility list covers your vehicle. The plate must be lit white and legible at 20 m without stray light rearward. |
Germany is the only one that distinguishes a complete approved LED unit, which needs nothing further, from a retrofit bulb, which needs its own approval covering your car.
Why the answers differ
Can you fit LED number plate bulbs?
A small lamp with a precisely defined job: illuminate the plate in white light so it is legible at distance, without throwing visible light rearward. All three markets agree on the requirement and on the prohibition of coloured or blue-tinted plate lamps. Germany is the only one that draws a distinction people can act on, separating a complete approved LED unit, which needs nothing further, from a retrofit LED bulb, which needs its own approval whose compatibility list names your vehicle. That is the same bulb-versus-assembly logic Germany applies to headlights, applied consistently at the other end of the car. It also names a measurable standard the others describe qualitatively, legibility at 20 m.
Verdict at a glance
The same three markets, grouped by where they land.
Conditional
ConditionalUnited Kingdom, United States and Germany. Permitted, but only once the condition in the table above is met.
Sources
Primary legislation and regulator guidance behind each market's verdict.
- UKRoad Vehicles Lighting Regulations 1989
- UKMOT inspection manual: 4. Lamps, reflectors and electrical equipment (GOV.UK)
- USFederal Motor Vehicle Safety Standards, lighting (NHTSA)
- USVehicle modifications and equipment (NHTSA)
- Germany§ 22a StVZO - Bauartgenehmigung für Fahrzeugteile (gesetze-im-internet.de)
- Germany§ 12 FZV - Ausgestaltung und Anbringung der Kennzeichen (gesetze-im-internet.de)
Other cross-market comparisons
This is a comparison of national rules, not legal advice for your vehicle. Rules change, and the US row in particular summarises federal law where one exists and the common pattern across states where it does not. Confirm the position in your own state or region before you buy or fit anything. Sources last reviewed July 2026.