Headlight Bulb Brightness Comparison — Lumens, Kelvin & Road Legal Limits
Headlight brightness guide. Lumens vs Kelvin explained. Brightness ratings compared (+100%, +150%, +200%). Colour temperature. MOT limits and road legality.
Headlight brightness guide. Lumens vs Kelvin explained. Brightness ratings compared (+100%, +150%, +200%). Colour temperature. MOT limits and road legality.
Step-by-step guide to changing a headlight bulb on any car. Covers access methods, common mistakes, and when to call a professional.
Complete guide to car bulb types. What H1, H4, H7, H11, HB3, W5W, and other codes mean, and which ones your car uses.
Complete guide to which car bulbs are tested during the MOT. What fails, what’s advisory, and how to prepare.
H4 vs H7 headlight bulbs compared. What’s the difference, are they interchangeable, and which does your car use?
The best H7 headlight bulbs in the UK for 2026. Philips, OSRAM, Ring, and more — compared on brightness, lifespan, and value.
Not sure which parts fit your car? Find out instantly.
Compatibility Checker →