Does the 2025 Lexus IS need premium gas?
Yes. Premium.
$288extra a year
- Premium listed for the 300 RWD.
- All 13 trims list premium.
- Required or only recommended: the data does not say.
- 69% of 68 sedans (2025) list premium.
12,000 miles a year. Gas $3.20. Premium $0.60 more.
| Trim | Engine | Grade | Mpg | Regular, a year | Premium, a year |
|---|---|---|---|---|---|
| 300 RWD | 2.0L | Premium | 25 | $1,536 | $1,824 |
| 300 F SPORT Design RWD | 2.0L | Premium | 25 | $1,536 | $1,824 |
| 300 AWD | 3.5L 6cyl | Premium | 22 | $1,745 | $2,073 |
| 350 F SPORT Design RWD | 3.5L | Premium | 23 | $1,670 | $1,983 |
| 300 F SPORT Design AWD | 3.5L 6cyl | Premium | 22 | $1,745 | $2,073 |
| 300 F SPORT RWD | 2.0L | Premium | 25 | $1,536 | $1,824 |
| 350 F SPORT Design AWD | 3.5L 6cyl | Premium | 22 | $1,745 | $2,073 |
| 350 F SPORT RWD | 3.5L | Premium | 23 | $1,670 | $1,983 |
| 300 F SPORT AWD | 3.5L 6cyl | Premium | 22 | $1,745 | $2,073 |
| 350 F SPORT AWD | 3.5L 6cyl | Premium | 22 | $1,745 | $2,073 |
| 500 F SPORT Performance RWD | 5.0L 8cyl | Premium | 20 | $1,920 | $2,280 |
| 500 F SPORT Performance Premium RWD | 5.0L 8cyl | Premium | 20 | $1,920 | $2,280 |
| IS 500 F SPORT Performance Ultimate Edition RWD | 5.0L 8cyl | Premium | 20 | $1,920 | $2,280 |
Rivals
| Car | Cheapest trim | Grade |
|---|---|---|
| 2025 Lexus IS | 300 RWD | Premium |
| 2025 Toyota Crown | XLE AWD | Regular |
| 2025 Audi A4 | 40 TFSI Premium AWD | Premium |
| 2025 Lexus ES | 350 FWD | Regular |
| 2025 Genesis G70 | 2.5T RWD | Premium |
| 2025 Volvo S60 | B5 Core Dark Theme AWD | Premium |
| 2025 Audi A3 | 40 TFSI 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