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What does HPG stand for?

HPG stands for Highest Possible Gear

This definition appears very rarely and is found in the following Acronym Finder categories:

  • Science, medicine, engineering, etc.

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Other Resources:
We have 77 other meanings of HPG in our Acronym Attic

Samples in periodicals archive:

Drive off immediately and use the highest possible gear to minimise cold start emissions.
You should also use the highest possible gear and avoid sudden acceleration and braking.