smiles per gallon

A play on the metric miles per gallon. Describes the overall fulfillment and enjoyment of a driving experience, rather than fuel economy. Used often in the car enthusiast community, when referencing vehicles that focus primarily on performance rather than daily drive-ability and convenience.

That car may suck up gas, but it makes up for it in smiles per gallon.

by DemonOfRazgriz June 15, 2018