Does the 2013 Cadillac ATS need premium gas?
Fuel grade varies by trim — see the breakdown below.
| Trim (engine / transmission) | Fuel | MPG | Fuel/yr |
|---|---|---|---|
| 2.5L 4-cyl, S6 automatic, RWD | REGULAR | 26 | $2,400 |
| 2.0L 4-cyl, S6 automatic, RWD | REGULAR | 24 | $2,600 |
| 2.0L 4-cyl, 6-spd manual, RWD | REGULAR | 23 | $2,700 |
| 3.6L 6-cyl, S6 automatic, RWD | REGULAR | 22 | $2,850 |
| 3.6L 6-cyl, S6 automatic, RWD | FLEX-FUEL | 22 | $2,850 |
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.
5 trim(s) · EPA FuelEconomy.gov · retrieved 2026-06-14.