Does the 2003 Mercedes-Benz CL600 need premium gas?
Every gas trim of this model takes premium.
| Trim (engine / transmission) | Fuel | MPG | Fuel/yr |
|---|---|---|---|
| 5.5L 12-cyl, Automatic 5-spd, RWD | PREMIUM | 14 | $5,500 |
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.
1 trim(s) · EPA FuelEconomy.gov · retrieved 2026-06-14.