Does the 2018 Chevrolet Sonic 5 need premium gas?
Every trim takes regular — no premium needed.
| Trim (engine / transmission) | Fuel | MPG | Fuel/yr |
|---|---|---|---|
| 1.4L 4-cyl, 6-spd manual, FWD | REGULAR | 32 | $1,950 |
| 1.4L 4-cyl, S6 automatic, FWD | REGULAR | 30 | $2,100 |
| 1.8L 4-cyl, 5-spd manual, FWD | REGULAR | 29 | $2,150 |
| 1.8L 4-cyl, S6 automatic, FWD | REGULAR | 28 | $2,200 |
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.
4 trim(s) · EPA FuelEconomy.gov · retrieved 2026-06-14.