You’re A Mechanic If You Can Pass This Essential Car Maintenance Quiz

Noor Muhammad|Auto|6 Feb 2025

Which of the following causes headlamps to turn yellow over time?

48%
Retry Correct Incorrect Oxidation is the phenomenon where the plastic that makes up the headlamps is denatured by atmospheric oxygen in the presence of sunlight. Headlamps made of glass do not turn yellow over time.
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Martyn Lucy/Getty Images
Martyn Lucy/Getty Images

Which of the following causes headlamps to turn yellow over time?

  • Wax and polish build up
  • Denaturing of plastic
  • Scratches
  • Oxidation
48%

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