2025 GMC Sierra 1500 Denali vs 2026 GMC Sierra 1500 Denali
On paper, the 2025 GMC Sierra 1500 Denali wins on $500 less. The 2026 GMC Sierra 1500 Denali has to win you at the dealer. Key numbers: $500 price gap, 355 vs 355 hp, 17 vs 17 MPG.
The Sierra 1500 Denali leads on $500 less. The spec table compares 0 specifications head to head.
What's Actually Different
These two vehicles differ in 0 specifications.
Full Specification Comparison
Specifications and pricing reflect available data as of early 2026 and may not match current manufacturer figures. Always confirm details with an authorized dealer before making a purchase decision.
| Spec | 2025 GMC Sierra 1500 Denali | 2026 GMC Sierra 1500 Denali |
|---|---|---|
| Pricing | ||
| MSRP | $68,700 | $69,200 |
| Powertrain | ||
| Engine | 5.3L V8 | 5.3L V8 |
| Horsepower | 355 hp | 355 hp |
| Torque | 383 lb-ft | 383 lb-ft |
| Transmission | 10-speed shiftable automatic | 10-speed shiftable automatic |
| Drivetrain | 4WD | 4WD |
| Fuel Economy | ||
| City MPG | 15 | 15 |
| Highway MPG | 19 | 19 |
| Combined MPG | 17 | 17 |
| Fuel Tank | 24.0 gal | 24.0 gal |
| Dimensions | ||
| Curb Weight | 5,110 lbs | 5,110 lbs |
| Wheelbase | 147.0" | 147.0" |
| Length | 231.9" | 231.9" |
| Width | 81.2" | 81.2" |
| Height | 75.5" | 75.5" |
| Truck Specs | ||
| Cab Type | Crew Cab | Crew Cab |
| Bed Length | 5.8 ft | 5.8 ft |
| Safety | ||
| NHTSA Overall | 5/5 stars | 5/5 stars |
| Warranty | ||
| Bumper-to-Bumper | 3yr/36k | 3yr/36k |
| Powertrain | 5yr/60k | 5yr/60k |
| Corrosion | 6yr/100k | 6yr/100k |
| Roadside Assistance | 5yr/60k | 5yr/60k |
Frequently Asked Questions
What is the price difference between the 2025 GMC Sierra 1500 Denali and 2026 GMC Sierra 1500 Denali?
The 2025 GMC Sierra 1500 Denali starts at $68,700, $500 less than the 2026 GMC Sierra 1500 Denali at $69,200. That gap is small enough that monthly payments are nearly identical. Focus on which vehicle fits your life, not the sticker.
Who should choose the 2025 GMC Sierra 1500 Denali?
The 2025 GMC Sierra 1500 Denali is the stronger pick when you want to keep $500 in your pocket and the 2025 GMC Sierra 1500 Denali covers your needs.
Who should choose the 2026 GMC Sierra 1500 Denali?
The 2026 GMC Sierra 1500 Denali is the stronger pick when the 2026 GMC Sierra 1500 Denali is more fuel-efficient for a lower-cost commute.
Which gets better fuel economy, the 2025 GMC Sierra 1500 Denali or 2026 GMC Sierra 1500 Denali?
Both achieve 17 combined MPG, so fuel cost is not a factor in this decision.
Which is more powerful, the 2025 GMC Sierra 1500 Denali or 2026 GMC Sierra 1500 Denali?
Both produce 355 hp.
Is the 2025 GMC Sierra 1500 Denali bigger than the 2026 GMC Sierra 1500 Denali?
Both measure 231.9″ in overall length.
Explore more: GMC trims, GMC Sierra 1500 trims
The Sierra 1500–Sierra 1500 Decision
Truck buyers cross-shopping the Sierra 1500 and Sierra 1500 are comparing more than price. Bed size, powertrain, and tow rating all factor in. The $500 price gap works out to less than $10/month on a typical loan, so the cost difference is negligible. Pick on fit, not on price.
What Powers Each Vehicle
Both run the same 5.3L V8 engine. Both produce 355 hp. Both use 4WD.
The Ownership Math
Annual fuel costs are nearly identical, so running costs will not separate these two.
The Decision
Choose the 2025 GMC Sierra 1500 Denali when you want to keep $500 in your pocket and the 2025 GMC Sierra 1500 Denali covers your needs. Choose the 2026 GMC Sierra 1500 Denali when the 2026 GMC Sierra 1500 Denali is more fuel-efficient for a lower-cost commute.
Specifications shown combine licensed third-party automotive data with official manufacturer, EPA, and NHTSA source material. Actual pricing, features, and availability may vary by region and dealer. Always confirm details with an authorized dealer before making a purchase decision. TrimAtlas is not affiliated with GMC or any dealership.