Should I buy a used Mitsubishi Mirage if gas is expensive?

Yes—but only if your top priority is minimizing fuel cost and the used one is genuinely cheap, clean, and mechanically sound. A used Mitsubishi Mirage can make sense when gas is expensive because fuel economy is its main strength; 2019–2020 examples are cited at about 36 mpg city and 43 mpg highway.

I’d buy one if:

• You mostly drive in the city or commute at normal speeds.
• You care more about low running costs than power, refinement, or comfort.
• A pre-purchase inspection shows no major issues.
• The price is low enough to justify choosing it over a used Corolla, Civic, Fit, Yaris, Prius, or other small economy car.

I’d skip it if you do lots of highway passing, carry passengers often, want a quiet cabin, or need a car that feels sturdy and comfortable. The Mirage is economical, but it is also a very basic subcompact. The deal matters: if the used price is inflated, a different small used car may be a better long-term buy even if it uses a bit more gas.