2025 GMC Sierra 3500HD vs 2026 Jeep Gladiator
Comparison Overview
The most significant numerical divergence between the 2025 GMC Sierra 3500HD and the 2026 Jeep Gladiator lies in power output and fuel economy, areas where the segment difference is pronounced. The Sierra 3500HD boasts 401 hp and 464 lb-ft of torque, substantially outperforming the Gladiator's 285 hp and 260 lb-ft, a difference of 116 horsepower. Conversely, the Gladiator offers a combined 19 MPG, whereas the Sierra's heavy-duty nature typically yields significantly lower figures, though not explicitly provided here for the GMC. The MSRP reflects a $47,500 starting point for the Sierra versus the Gladiator's lower $38,830, representing an $8,670 price gap. Dimensionally, the Sierra is longer at 236.3 inches compared to the Gladiator's 218.0 inches, highlighting the Sierra's greater structural capacity.
Size Comparison
Performance
Fuel Efficiency
Full Specifications
Our Verdicts
2026 Jeep Gladiator
The 2026 Jeep Gladiator is the preferred commuter due to its superior fuel efficiency, achieving 19 combined MPG versus the expected lower figures for a heavy-duty truck.
2025 GMC Sierra 3500HD
The 2025 GMC Sierra 3500HD is marginally better equipped for family hauling due to its larger dimensions, being 81.9 inches wide compared to the Gladiator's 73.8 inches.
2025 GMC Sierra 3500HD
Enthusiasts prioritizing brute force will favor the Sierra 3500HD, which delivers 401 hp and 464 lb-ft of torque through a 10-speed automatic transmission.
2026 Jeep Gladiator
The 2026 Jeep Gladiator provides significantly more utility for its lower $38,830 MSRP compared to the Sierra 3500HD's $47,500 starting price.
Choose the GMC Sierra 3500HD if...
- Your primary requirement is maximizing power, evidenced by its 401 hp engine.
- You require a larger footprint, specified by its 236.3-inch length and 80.9-inch height.
- You need the increased durability and gearing associated with a 10-speed automatic transmission.
Choose the Jeep Gladiator if...
- Budget constraints dictate a preference for the lower $38,830 MSRP.
- Fuel economy is a priority, highlighted by its 19 combined MPG rating.
- Standard four-wheel drive capability is essential for off-road or adverse conditions.
Key Dimensions
| Dimension | GMC Sierra 3500HD | Jeep Gladiator |
|---|---|---|
| Length | 236.3" | 218.0" |
| Width | 81.9" | 73.8" |
| Height | 80.9" | 75.0" |
| Wheelbase | 142.0" | 137.3" |
Features Comparison
Safety
| Feature | GMC | Jeep |
|---|---|---|
| Lane Departure Warning | ✓ | — |
| Pre-Collision Safety System | ✓ | — |
| Post-Collision Safety System | ✓ | ✓ |
| Dual Front Side-Mounted Airbags | ✓ | ✓ |
| Front Head Airbags | ✓ | ✓ |
| Passenger Airbag Occupant Sensing Deactivation | ✓ | ✓ |
| Electronic Stability Control | ✓ | ✓ |
| Traction Control System | ✓ | ✓ |
| LATCH System | ✓ | ✓ |
| Anti-lock Brakes (ABS) | 4-Wheel | 4-Wheel |
| Front Ventilated Disc Brakes | ✓ | ✓ |
| Rear Ventilated Disc Brakes | ✓ | ✓ |
| Tire Pressure Monitoring System | ✓ | ✓ |
| Automatic Headlights | ✓ | — |
| Headlight Delay-Off | ✓ | ✓ |
| LED Headlights | ✓ | — |
| Daytime Running Lights | ✓ | — |
| Integrated Turn Signal Mirrors | ✓ | — |
| Front Headrests | 2 | 2 |
| Front Height Adjustable Headrests | ✓ | ✓ |
| Front Center 3-Point Seatbelt | ✓ | — |
| Engine Immobilizer | ✓ | ✓ |
| Rear Head Airbags | — | ✓ |
| Rear Door Child Safety Locks | — | ✓ |
| Brake Assist | — | ✓ |
| Front Fog Lights | — | ✓ |
| Rear Headrests | — | 3 |
| Rear Folding Headrests | — | ✓ |
| Rear Center 3-Point Seatbelt | — | ✓ |
Engine
| Feature | GMC | Jeep |
|---|---|---|
| Base Engine Displacement | 6.6 L | 3.6 L |
| Number of Cylinders | V8 | V6 |
| Base Engine Type | gas | gas |
| Horsepower | 401 hp @ 5200 rpm | 285 hp @ 6400 rpm |
| Torque | 464 lb-ft @ 4000 rpm | 260 lb-ft @ 4400 rpm |
| Number of Valves | 16 | 24 |
| Camshaft Type | Overhead valves (OHV) | Double overhead cam (DOHC) |
| Variable Valve Timing | Variable | Variable |
| Fuel Injection Type | ✓ | — |
Drive Train
| Feature | GMC | Jeep |
|---|---|---|
| Transmission Type | 10-speed shiftable automatic | 8-speed shiftable automatic |
| Drivetrain Type | rear wheel drive | four wheel drive |
| Rear Differential Type | Locking | — |
| 4WD System Type | — | Part Time |
| Transfer Case Gearing | — | Manual Hi-Lo |
| Locking Hubs | — | Automatic |
Fuel
| Feature | GMC | Jeep |
|---|---|---|
| Fuel Type | regular unleaded | regular unleaded |
| EPA Driving Range (City/Highway) | 0/0 mi. | 374.0/484.0 mi. |
| Fuel Tank Capacity | 36.0 gal. | 22.0 gal. |
| EPA Fuel Economy (City/Highway) | — | 17/22 MPG |
| EPA Fuel Economy (Combined) | — | 19 MPG |
Comfort & Convenience
| Feature | GMC | Jeep |
|---|---|---|
| Push Button Start | ✓ | ✓ |
| Tilt Steering Wheel | ✓ | — |
| Power Steering | ✓ | ✓ |
| Rear View Camera | ✓ | ✓ |
| Cruise Control | ✓ | — |
| Front Cupholders | ✓ | ✓ |
| Front Door Pockets | ✓ | ✓ |
| Single Zone Climate Control | ✓ | ✓ |
| Turn Signal Indicators in Mirrors | ✓ | — |
| Tilt and Telescopic Steering Wheel | — | ✓ |
| Audio Controls on Steering Wheel | — | ✓ |
| Cruise Control on Steering Wheel | — | ✓ |
| Adaptive Cruise Control | — | ✓ |
| Rear Cupholders | — | ✓ |
| Rear Door Pockets | — | ✓ |
| Front Seatback Storage | — | ✓ |
| Leatherette Steering Wheel | — | ✓ |
| Interior Air Filtration | — | ✓ |
| Dual Vanity Mirrors | — | ✓ |
In Car Entertainment
| Feature | GMC | Jeep |
|---|---|---|
| Infotainment Display | 7.0 in | 12.3 in |
| AM/FM Stereo | ✓ | ✓ |
| Speaker System | 2 | 8 |
| Android Auto (Wired) | ✓ | ✓ |
| Apple CarPlay (Wired) | ✓ | ✓ |
| USB Port | ✓ | ✓ |
| USB Port with External Media Control | ✓ | ✓ |
| Speed Sensitive Volume Control | ✓ | — |
| Auxiliary Audio Input | — | ✓ |
| Satellite Radio | — | ✓ |
| Satellite Radio Trial Period | — | 6 months |
Power Feature
| Feature | GMC | Jeep |
|---|---|---|
| One-Touch Power Windows | 2 | 2 |
| Power Door Locks | ✓ | — |
| Heated Mirrors | ✓ | ✓ |
| Keyless Entry | — | ✓ |
Frontseats
| Feature | GMC | Jeep |
|---|---|---|
| Front Head Room | 43.1 in. | 42.8 in. |
| Front Leg Room | 44.5 in. | 41.2 in. |
| Front Shoulder Room | 66.1 in. | 55.7 in. |
| Front Hip Room | 60.9 in. | 53.9 in. |
| Seat Material: Vinyl | ✓ | — |
| Front Seat Type: 40-20-40 Split Bench | ✓ | — |
| Driver Seat Manual Adjustments | 4-way | 6-way |
| Passenger Seat Manual Adjustments | 4-way | 4-way |
| Seat Material: Cloth | — | ✓ |
| Front Seat Type: Bucket | — | ✓ |
| Driver Seat Height Adjustment | — | ✓ |
| Driver Seat Lumbar Support | — | Manual |
Rearseats
| Feature | GMC | Jeep |
|---|---|---|
| Rear Head Room | — | 42.8 in. |
| Rear Leg Room | — | 38.3 in. |
| Rear Shoulder Room | — | 55.7 in. |
| Rear Hip Room | — | 55.9 in. |
| Split-Folding Rear Seatback | — | ✓ |
Tires and Wheels
| Feature | GMC | Jeep |
|---|---|---|
| Wheel Finish | Painted Steel | Painted Steel |
| Wheel Diameter | 18 in | — |
| Tire Type | All Terrain | All Season |
| Tire Size | LT275/70R18 | 245/75R17 |
| Spare Tire Type | Full Size Matching | Full Size Non-Matching |
| Spare Tire Location | Underbody Mounted | Underbody Mounted |
| Wheel Size | — | 17 x 7.5 in |
Suspension
| Feature | GMC | Jeep |
|---|---|---|
| Front Suspension Type | Independent | — |
| Stabilizer Bar | ✓ | — |
| Front Stabilizer Bar | — | ✓ |
| Rear Stabilizer Bar | — | ✓ |
Warranty
| Feature | GMC | Jeep |
|---|---|---|
| Basic Warranty | 3 yr./ 36000 mi. | 3 yr./ 36000 mi. |
| Drivetrain Warranty | 5 yr./ 100000 mi. | 5 yr./ 60000 mi. |
| Corrosion/Rust Warranty | 6 yr./ 100000 mi. | 5 yr./ unlimited mi. |
| Roadside Assistance | 5 yr./ 60000 mi. | 5 yr./ 60000 mi. |
| Complimentary Scheduled Maintenance | 1 yr./ unlimited mi. | — |
Frequently Asked Questions
Common questions about comparing the 2025 GMC Sierra 3500HD and 2026 Jeep Gladiator.
What is the primary performance difference between the 2025 Sierra 3500HD and the 2026 Gladiator?
The Sierra 3500HD substantially leads in raw performance metrics, offering 401 horsepower and 464 lb-ft of torque. The Gladiator produces 285 horsepower and 260 lb-ft of torque, indicating the Sierra is designed for significantly heavier duty applications.
How does the starting price compare for these two trucks?
There is an $8,670 price differential favoring the Jeep Gladiator. The Gladiator starts at $38,830 MSRP, while the Sierra 3500HD has a base MSRP of $47,500.
Which vehicle is better suited for daily city driving based on provided data?
The 2026 Jeep Gladiator is better suited for fuel-conscious commuting, achieving 17 MPG in city driving. The Sierra 3500HD, being a heavy-duty model, is anticipated to deliver significantly lower fuel economy figures.
Are both trucks the same size, and what are the dimensional differences?
No, the Sierra 3500HD is considerably larger, measuring 236.3 inches long and 81.9 inches wide. The Gladiator is more compact at 218.0 inches in length and 73.8 inches in width.
What are the differences in their standard drivetrain configurations?
The 2025 Sierra 3500HD comes standard with rear-wheel drive, whereas the 2026 Jeep Gladiator includes four-wheel drive capability as standard equipment.
Do both trucks use the same type of fuel and transmission?
Yes, both vehicles utilize regular unleaded fuel. However, the Sierra uses a more robust 10-speed shiftable automatic transmission, while the Gladiator employs an 8-speed shiftable automatic unit.
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