When to replace your headlight bulbs
“Without a full set of functioning headlight bulbs you’re making night-time driving more difficult for yourself”
You need to change a bulb as soon as it blows. Without a full set of functioning headlight bulbs you’re making night-time driving more difficult for yourself and aren’t making your car as visible to oncoming drivers.
You also risk being pulled over by the police and face a possible fine, although you’ll usually be given a few days to replace the bulb (and prove you’ve done it) before facing further action.
What headlight bulb do I need? All cars are slightly different, so if it is time to change your headlight bulbs, find your car for specific instructions.