Does the 2026 Lexus IS need premium gas?
Yes. Premium.
$327extra a year
- Premium listed for the 350 F Sport Design 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 |
|---|---|---|---|---|---|
| 350 F Sport Design RWD | 3.5L | Premium | 22 | $1,745 | $2,073 |
| 350 F SPORT Design AWD | 3.5L 6cyl | Premium | 22 | $1,745 | $2,073 |
| 350 F Sport RWD | 3.5L | Premium | 22 | $1,745 | $2,073 |
| 350 F Sport AWD | 3.5L 6cyl | Premium | 22 | $1,745 | $2,073 |
Rivals
| Car | Cheapest trim | Grade |
|---|---|---|
| 2026 Lexus IS | 350 F Sport Design RWD | Premium |
| 2026 Alfa Romeo Giulia | RWD | Premium |
| 2026 Mercedes-Benz E-Class All Terrain | E-Class E 350 RWD | Premium |
| 2026 Honda Civic Type R | FWD | Premium |
| 2026 BMW 3 Series | 330i Sedan RWD | Premium |
| 2026 Lexus ES Hybrid | ES ES 350h Premium AWD | Regular |
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