Does the 2026 Mercedes-Benz S-Class need premium gas?
Yes. Premium.
$313extra a year
- Premium listed for the S 500 4MATIC AWD.
- 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. Electric miles 50%.
| Trim | Engine | Grade | Mpg | Regular, a year | Premium, a year |
|---|---|---|---|---|---|
| S 500 4MATIC AWD | 3.0L 6cyl | Premium | 23 | $1,670 | $1,983 |
| S 580e 4MATIC AWD | 3.0L 6cyl | Premium | 23 | N/A | N/A |
| S 580 4MATIC AWD | 4.0L 8cyl | Premium | 20 | $1,920 | $2,280 |
Rivals
| Car | Cheapest trim | Grade |
|---|---|---|
| 2026 Mercedes-Benz S-Class | S 500 4MATIC AWD | Premium |
| 2026 BMW M5 | AWD | Premium |
| 2026 Porsche Panamera | RWD | Premium |
| 2026 Audi S8 | Base Style AWD | Premium |
| 2026 Audi RS 7 | performance 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