Does the 2026 Mercedes-Benz E-Class need premium gas?
Yes. Premium.
$257extra a year
- Premium listed for the E 350 RWD.
- All 3 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 |
|---|---|---|---|---|---|
| E 350 RWD | 2.0L 4cyl | Premium | 28 | $1,371 | $1,629 |
| E 350 4MATIC AWD | 2.0L 4cyl | Premium | 27 | $1,422 | $1,689 |
| E 450 4MATIC AWD | 3.0L 6cyl | Premium | 25 | $1,536 | $1,824 |
Rivals
| Car | Cheapest trim | Grade |
|---|---|---|
| 2026 Mercedes-Benz E-Class | E 350 RWD | Premium |
| 2026 Audi A6 | Premium TFSI AWD | Premium |
| 2026 Cadillac CT4-V Blackwing | CT4-V V-Series Blackwing RWD | Premium |
| 2026 Audi S5 | Premium AWD | Premium |
| 2026 Audi RS 3 | Base Style AWD | 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