FuelFacts

Does the 1984 Plymouth Horizon need premium gas?

Every trim takes regular — no premium needed.

Trim (engine / transmission)FuelMPGFuel/yr
1.6L 4-cyl, 4-spd manualREGULAR30$2,100
1.6L 4-cyl, 4-spd manualREGULAR29$2,150
2.2L 4-cyl, 5-spd manualREGULAR26$2,400
2.2L 4-cyl, 5-spd manualREGULAR25$2,500
2.2L 4-cyl, Automatic 3-spdREGULAR23$2,700
2.2L 4-cyl, Automatic 3-spdREGULAR21$2,950
The EPA records the fuel each version was tested on. Whether premium is strictly required or just recommended is an owner's-manual detail the EPA dataset doesn't include — so we don't guess it.

6 trim(s) · EPA FuelEconomy.gov · retrieved 2026-06-14.