2025 GMC Sierra 1500 Pro vs 2026 Jeep Gladiator Sport
On paper, the 2025 GMC Sierra 1500 Pro wins on 25 more hp, 170 more lb-ft torque, 13.9″ longer. The 2026 Jeep Gladiator Sport has to win you at the dealer. Key numbers: 310 vs 285 hp, 18 vs 19 MPG.
The Sierra 1500 Pro leads on 25 more hp, 170 more lb-ft torque. The Gladiator Sport leads on $8,470 less. The spec table compares 6 specifications head to head.
Key Differences at a Glance
What's Actually Different
These two vehicles differ in 6 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 Pro | 2026 Jeep Gladiator Sport |
|---|---|---|
| Pricing | ||
| MSRP | $47,300 | $38,830 |
| Powertrain | ||
| Engine | 2.7L I4 Turbo | 3.6L V6 |
| Horsepower | 310 hp | 285 hp |
| Torque | 430 lb-ft | 260 lb-ft |
| Transmission | 8-speed shiftable automatic | 8-speed shiftable automatic |
| Drivetrain | 4WD | 4WD |
| Fuel Economy | ||
| City MPG | 17 | 17 |
| Highway MPG | 19 | 22 |
| Combined MPG | 18 | 19 |
| Fuel Tank | 24.0 gal | 22.0 gal |
| Annual Fuel Cost (EPA) | No published data | $2,300/yr |
| Dimensions | ||
| Curb Weight | 4,990 lbs | 4,662 lbs |
| Wheelbase | 147.0" | 137.3" |
| Length | 231.9" | 218.0" |
| Width | 81.2" | 73.8" |
| Height | 75.5" | 75.0" |
| Truck Specs | ||
| Cab Type | Crew Cab | Crew Cab |
| Bed Length | 5.8 ft | No published data |
| Safety | ||
| NHTSA Overall | 5/5 stars | No published data |
| Warranty | ||
| Bumper-to-Bumper | 3yr/36k | 3yr/36k |
| Powertrain | 5yr/60k | 5yr/60k |
| Corrosion | 6yr/100k | 5yr/100k |
| Roadside Assistance | 5yr/60k | 5yr/60k |
Frequently Asked Questions
What is the price difference between the 2025 GMC Sierra 1500 Pro and 2026 Jeep Gladiator Sport?
The 2026 Jeep Gladiator Sport starts at $38,830, $8,470 less than the 2025 GMC Sierra 1500 Pro at $47,300. On a 60-month loan that is roughly $149/month. All prices are MSRP before destination and dealer fees.
Who should choose the 2025 GMC Sierra 1500 Pro?
The 2025 GMC Sierra 1500 Pro is the stronger pick when you want the larger footprint for passengers or cargo; 170 lb-ft more torque for pulling trailers and heavy loads.
Who should choose the 2026 Jeep Gladiator Sport?
The 2026 Jeep Gladiator Sport is the stronger pick when you want to keep $8,470 in your pocket and the 2026 Jeep Gladiator Sport covers your needs; lower running costs matter to you, roughly $122/year less on fuel; you prefer a smaller vehicle that is easier to park and maneuver.
Which gets better fuel economy, the 2025 GMC Sierra 1500 Pro or 2026 Jeep Gladiator Sport?
The 2026 Jeep Gladiator Sport rates 19 combined MPG, 1 MPG ahead.
Which is more powerful, the 2025 GMC Sierra 1500 Pro or 2026 Jeep Gladiator Sport?
The 2025 GMC Sierra 1500 Pro produces 310 hp, 25 more than the 2026 Jeep Gladiator Sport at 285 hp. The 2025 GMC Sierra 1500 Pro also leads in torque at 430 lb-ft vs 260 lb-ft. That torque gap matters most when towing or hauling heavy loads. The 2025 GMC Sierra 1500 Pro runs a 2.7L I4 Turbo; the 2026 Jeep Gladiator Sport uses a 3.6L V6.
Is the 2025 GMC Sierra 1500 Pro bigger than the 2026 Jeep Gladiator Sport?
The 2025 GMC Sierra 1500 Pro is 13.9″ longer at 231.9″ vs 218.0″. The 2025 GMC Sierra 1500 Pro has a 9.7″ longer wheelbase, which typically means more rear-seat legroom.
How do the warranties compare?
Both offer similar warranty coverage: 3yr/36k bumper-to-bumper and 5yr/60k powertrain.
Explore more: GMC trims, GMC Sierra 1500 trims, Jeep trims, Jeep Gladiator trims
- 2025 GMC Sierra 1500 Pro Safety Ratings (NHTSA)
- Compare Fuel Economy (EPA)
The Sierra 1500–Gladiator Decision
Truck buyers cross-shopping the Sierra 1500 and Gladiator are comparing more than price. Bed size, powertrain, and tow rating all factor in. The $-8,470 gap adds up to $149/month on a 60-month loan. That is real money, so the pricier option needs to earn it with capabilities you will actually use.
What Powers Each Vehicle
The 2025 GMC Sierra 1500 Pro runs a 2.7L I4 Turbo; the 2026 Jeep Gladiator Sport uses a 3.6L V6. The 2025 GMC Sierra 1500 Pro has 25 more hp (310 vs 285), enough to notice on highway on-ramps and when passing. The 2025 GMC Sierra 1500 Pro also delivers 170 more lb-ft of torque (430 vs 260), which matters for trailer stability and pulling heavy loads up grades. Both use 4WD.
The Ownership Math
The 2026 Jeep Gladiator Sport saves roughly $122/year on fuel at $3.50/gallon and 12,000 annual miles. Over five years, that is $610.
Living With the Sierra 1500 vs the Gladiator
The 2025 GMC Sierra 1500 Pro is 13.9″ longer, which translates to more room inside but a larger footprint in parking lots and garages. The 2025 GMC Sierra 1500 Pro has a 9.7″ longer wheelbase, typically meaning a smoother ride and more rear-seat legroom. The 2025 GMC Sierra 1500 Pro weighs 328 lbs more. Heavier vehicles tend to feel more planted at highway speed but use more fuel and are harder to stop quickly.
The Decision
Choose the 2025 GMC Sierra 1500 Pro when you want the larger footprint for passengers or cargo. Choose the 2026 Jeep Gladiator Sport when you want to keep $8,470 in your pocket and the 2026 Jeep Gladiator Sport covers your needs.
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 Jeep or any dealership.