How to Clean a Speedometer Face

Updated February 21, 2017

Speedometers are present on everything drivable, from mopeds to big rigs. To protect the mechanism of the device, speedometers have a plastic covering. When cleaning a speedometer's face, you should exercise care in the tools and cleaners you use. Anything abrasive or containing strong solvents can result in scratching, clouding or discolouration of the plastic. This can create a barrier to viewing the speedometer.

Wipe away any dust present on the plastic surface with a microfiber cloth.

Apply 1/4 tsp of plastic polish to a foam wax applicator, and apply to the speedometer face using up-and-down and side-to-side motions.

Wipe the face with a clean microfiber cloth to remove all the plastic polish residue.

Spray the speedometer face with a layer of plastic spray-on sealant. Allow it to sit for 10 to 15 seconds. Wipe off with a clean microfiber cloth.


Test the quality of a microfiber cloth by rubbing it on the back of a blank CD. If the cloth scratches the CD, it will likely scratch your speedometer's plastic face. As an alternative to commercial products, you can make a soapy water solution with 1 cup of water and 5 or 6 drops of mild liquid dish soap. Dip a clean microfiber cloth into the soapy solution, and wipe the speedometer face. Wipe the face with a damp microfiber cloth to remove soap residue. Dry with a clean microfiber cloth.


If you own a motorcycle, never use a pressure washer on the speedometer face. Do not use strong solvents to clean the speedometer face, or damage could occur.

Things You'll Need

  • 4 microfiber cloths
  • Foam wax applicator
  • 1/4 tsp plastic polish
  • Spray-on plastic sealant
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About the Author

Based in Texas, Cynthia Measom has been writing various parenting, business and finance and education articles since 2011. Her articles have appeared on websites such as The Bump and Motley Fool. Measom received a Bachelor of Arts in English from the University of Texas at Austin.