Does the 2021 Mercedes-Benz CLS need premium gas?
Yes. Premium.
$277extra a year
- Premium listed for the 450 RWD.
- All 2 trims list premium.
- Required or only recommended: the data does not say.
- 60% of 75 sedans (2021) list premium.
12,000 miles a year. Gas $3.20. Premium $0.60 more.
| Trim | Engine | Grade | Mpg | Regular, a year | Premium, a year |
|---|---|---|---|---|---|
| 450 RWD | 3.0L 6cyl | Premium | 26 | $1,477 | $1,754 |
| CLS 450 4MATIC AWD | 3.0L 6cyl | Premium | 25 | $1,536 | $1,824 |
Rivals
| Car | Cheapest trim | Grade |
|---|---|---|
| 2021 Mercedes-Benz CLS | 450 RWD | Premium |
| 2021 BMW M3 | RWD | Premium |
| 2021 Audi A7 | 55 TFSI Premium AWD | Premium |
| 2021 Maserati Ghibli | RWD | Premium |
| 2021 Genesis G90 | 3.3T Premium RWD | Premium |
| 2021 Audi S6 | Prestige 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