Does the 2025 GMC Sierra 2500HD need premium gas?
No. Diesel.
$0extra a year
- Diesel listed for the 2WD Reg Cab 142" Pro.
- All 31 trims list diesel.
- Diesel engine. Gas grades do not apply.
- 21% of 14 trucks (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 |
|---|---|---|---|---|---|
| 2WD Reg Cab 142" Pro | 6.6L | Diesel | 16 to 26 | N/A | N/A |
| Pro Double Cab RWD | 6.6L | Diesel | 16 to 26 | N/A | N/A |
| Pro Double Cab LB RWD | 6.6L | Diesel | 16 to 26 | N/A | N/A |
| 4WD Reg Cab 142" Pro | 6.6L | Diesel | 15 to 24 | N/A | N/A |
| 2WD Crew Cab 159" Pro | 6.6L | Diesel | 16 to 26 | N/A | N/A |
| 2WD Crew Cab 172" Pro | 6.6L | Diesel | 16 to 26 | N/A | N/A |
| 2WD Reg Cab 142" SLE | 6.6L | Diesel | 16 to 26 | N/A | N/A |
| Pro Double Cab 4WD | 6.6L | Diesel | 15 to 24 | N/A | N/A |
| Pro Double Cab LB 4WD | 6.6L | Diesel | 15 to 24 | N/A | N/A |
| SLE Double Cab RWD | 6.6L | Diesel | 16 to 26 | N/A | N/A |
| SLE Double Cab LB RWD | 6.6L | Diesel | 16 to 26 | N/A | N/A |
| 4WD Crew Cab 159" Pro | 6.6L | Diesel | 15 to 24 | N/A | N/A |
| 4WD Crew Cab 172" Pro | 6.6L | Diesel | 15 to 24 | N/A | N/A |
| 4WD Reg Cab 142" SLE | 6.6L | Diesel | 15 to 24 | N/A | N/A |
| 2WD Crew Cab 159" SLE | 6.6L | Diesel | 16 to 26 | N/A | N/A |
| 2WD Crew Cab 172" SLE | 6.6L | Diesel | 16 to 26 | N/A | N/A |
| SLE Double Cab 4WD | 6.6L | Diesel | 15 to 24 | N/A | N/A |
| SLE Double Cab LB 4WD | 6.6L | Diesel | 15 to 24 | N/A | N/A |
| 4WD Crew Cab 159" SLE | 6.6L | Diesel | 15 to 24 | N/A | N/A |
| 4WD Crew Cab 172" SLE | 6.6L | Diesel | 15 to 24 | N/A | N/A |
| 2WD Crew Cab 159" SLT | 6.6L | Diesel | 16 to 26 | N/A | N/A |
| 2WD Crew Cab 172" SLT | 6.6L | Diesel | 16 to 26 | N/A | N/A |
| 4WD Crew Cab 159" SLT | 6.6L | Diesel | 15 to 24 | N/A | N/A |
| 4WD Crew Cab 172" SLT | 6.6L | Diesel | 15 to 24 | N/A | N/A |
| 4WD Crew Cab 159" AT4 | 6.6L | Diesel | 15 to 24 | N/A | N/A |
| 4WD Crew Cab 172" AT4 | 6.6L | Diesel | 15 to 24 | N/A | N/A |
| 4WD Crew Cab 159" Denali | 6.6L | Diesel | 15 to 24 | N/A | N/A |
| 4WD Crew Cab 172" Denali | 6.6L | Diesel | 15 to 24 | N/A | N/A |
| 4WD Crew Cab 159" AT4X | 6.6L | Diesel | 15 to 24 | N/A | N/A |
| 4WD Crew Cab 159" Denali Ultimate | 6.6L | Diesel | 15 to 24 | N/A | N/A |
| 4WD Crew Cab 172" Denali Ultimate | 6.6L | Diesel | 15 to 24 | N/A | N/A |
Rivals
| Car | Cheapest trim | Grade |
|---|---|---|
| 2025 GMC Sierra 2500HD | 2WD Reg Cab 142" Pro | Diesel |
| 2025 Ford F-150 | XL 2WD Reg Cab 8' Box | 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