Does the 2026 Mercedes-Benz C-Class need premium gas?
Yes. Premium.
$248extra a year
- Premium listed for the C 300 RWD.
- All 4 trims list premium.
- Required or only recommended: the data does not say.
- 64% of 55 sedans (2026) list premium.
12,000 miles a year. Gas $3.20. Premium $0.60 more.
| Trim | Engine | Grade | Mpg | Regular, a year | Premium, a year |
|---|---|---|---|---|---|
| C 300 RWD | 2.0L 4cyl | Premium | 29 | $1,324 | $1,572 |
| C 300 4MATIC AWD | 2.0L 4cyl | Premium | 27 | $1,422 | $1,689 |
| Mercedes-AMG C-Class C 43 AMG 4MATIC AWD | 2.0L 4cyl | Premium | 22 | $1,745 | $2,073 |
| Mercedes-AMG C-Class C 63 S E Performance AMG 4MATIC+ AWD | 2.0L 4cyl | Premium | 22 to 27 | N/A | N/A |
Rivals
| Car | Cheapest trim | Grade |
|---|---|---|
| 2026 Mercedes-Benz C-Class | C 300 RWD | Premium |
| 2026 Dodge Charger | R/T AWD | Premium |
| 2026 Cadillac CT5 | Premium Luxury RWD | Premium |
| 2026 Audi A5 | Premium AWD | Premium |
| 2026 Toyota Mirai | XLE RWD | Hydrogen |
| 2026 BMW 3 Series | 330i Sedan RWD | Premium |
What this cannot tell you
Check the fuel door or manual before you fill.
Gas prices and the premium gap change by state.
- 2 or more sources
- 1 source
- Model-level, rule or estimate
- Sources disagree