mpg

1. Alternative letter-case form of MPG.

   For example, in the U.K., where a gallon of gasoline currently costs around $5.60, hypermiling could save the average driver doing 8,000 miles in a 33 mpg car around $500 a year, according to Gerdes.

   2016 July 21, Jacopo Prisco, “How ‘hypermiling’ can save you a lot of fuel (and the planet)”, in CNN

plural MPGs

1. abbreviationcountableinitialismuncountablemetrologyInitialism of miles per gallon.
2. abbreviationcountableinitialismuncountablechemistryInitialism of monopropylene glycol.