Certain manufacturing defects and installation problems can also drastically shorten the operational lifespan of a headlight bulb as well.
How Long do Headlights Last?
If you find that your headlights burn out significantly faster, then there is probably an underlying problem.
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How Long Do Tungsten-Halogen Headlights Last?
The filament in a halogen headlight bulb is tungsten.
In old sealed-beam headlights, the headlight was either filled with inert gas or a vacuum.
When tungsten gets hot enough to emit light, material boils off the surface of the filament.
What Causes Halogen Headlight Bulbs to Fail?
This arc is normal and expected.
In the case of sealed-beam halogen headlights, they are much more robust and harder to damage than capsules.
However, breaking the integrity of the seal is still an excellent recipe for early failure.
How Long Do Xenon, HID, and Other Headlights Last?
Before you replace your burned-out headlights, its also a good idea to check the headlight assemblies.
