2026 GMC Sierra 1500 AT4 vs 2025 Ford F-150 XLT
3 mpg better and 95 more lb-ft torque vs $17,305 less and 20 more hp. That is the real fork. Key numbers: 305 vs 325 hp, 23 vs 20 MPG.
The Sierra 1500 AT4 leads on 3 MPG better, 95 more lb-ft torque. The F-150 XLT leads on $17,305 less, 20 more hp. The spec table compares 7 specifications head to head.
Key Differences at a Glance
What's Actually Different
These two vehicles differ in 7 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 | 2026 GMC Sierra 1500 AT4 | 2025 Ford F-150 XLT |
|---|---|---|
| Pricing | ||
| MSRP | $66,800 | $49,495 |
| Powertrain | ||
| Engine | 3.0L I6 diesel Turbo | 2.7L V6 Turbo |
| Horsepower | 305 hp | 325 hp |
| Torque | 495 lb-ft | 400 lb-ft |
| Transmission | 10-speed shiftable automatic | 10-speed shiftable automatic |
| Drivetrain | 4WD | 4WD |
| Fuel Economy | ||
| City MPG | 21 | 18 |
| Highway MPG | 24 | 23 |
| Combined MPG | 23 | 20 |
| Fuel Tank | 24.0 gal | 36.0 gal |
| Dimensions | ||
| Curb Weight | 5,500 lbs | 4,895 lbs |
| Wheelbase | 148.0" | 145.4" |
| Length | 232.9" | 232.0" |
| Width | 81.2" | 79.9" |
| Height | 78.4" | 77.1" |
| Truck Specs | ||
| Cab Type | Crew Cab | SuperCab |
| Bed Length | 5.8 ft | 6.5 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 | 5yr/unlimited |
| Roadside Assistance | 5yr/60k | 5yr/60k |
Frequently Asked Questions
What is the price difference between the 2026 GMC Sierra 1500 AT4 and 2025 Ford F-150 XLT?
The 2025 Ford F-150 XLT starts at $49,495, $17,305 less than the 2026 GMC Sierra 1500 AT4 at $66,800. On a 60-month loan that is roughly $304/month. All prices are MSRP before destination and dealer fees.
Who should choose the 2026 GMC Sierra 1500 AT4?
The 2026 GMC Sierra 1500 AT4 is the stronger pick when lower running costs matter to you, roughly $274/year less on fuel; 95 lb-ft more torque for pulling trailers and heavy loads.
Who should choose the 2025 Ford F-150 XLT?
The 2025 Ford F-150 XLT is the stronger pick when you want to keep $17,305 in your pocket and the 2025 Ford F-150 XLT covers your needs.
Which gets better fuel economy, the 2026 GMC Sierra 1500 AT4 or 2025 Ford F-150 XLT?
The 2026 GMC Sierra 1500 AT4 rates 23 combined MPG, 3 MPG ahead.
Which is more powerful, the 2026 GMC Sierra 1500 AT4 or 2025 Ford F-150 XLT?
The 2025 Ford F-150 XLT produces 325 hp, 20 more than the 2026 GMC Sierra 1500 AT4 at 305 hp. The 2026 GMC Sierra 1500 AT4 also leads in torque at 495 lb-ft vs 400 lb-ft. That torque gap matters most when towing or hauling heavy loads. The 2026 GMC Sierra 1500 AT4 runs a 3.0L I6 diesel Turbo; the 2025 Ford F-150 XLT uses a 2.7L V6 Turbo.
Is the 2026 GMC Sierra 1500 AT4 bigger than the 2025 Ford F-150 XLT?
The 2026 GMC Sierra 1500 AT4 is 0.9″ longer at 232.9″ vs 232.0″. The 2026 GMC Sierra 1500 AT4 has a 2.6″ 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, Ford trims, Ford F-150 trims
- 2026 GMC Sierra 1500 AT4 Safety Ratings (NHTSA)
- 2025 Ford F-150 XLT Safety Ratings (NHTSA)
- Compare Fuel Economy (EPA)
How the Sierra 1500 and F-150 Stack Up
Two full-size trucks built for work and weekend. The 2026 GMC Sierra 1500 AT4 ($66,800) and 2025 Ford F-150 XLT ($49,495) take different approaches to the same job. The $-17,305 gap adds up to $304/month on a 60-month loan. That is real money, so the pricier option needs to earn it with capabilities you will actually use.
Powertrain: Sierra 1500 vs F-150
The 2026 GMC Sierra 1500 AT4 runs a 3.0L I6 diesel Turbo; the 2025 Ford F-150 XLT uses a 2.7L V6 Turbo. The 2025 Ford F-150 XLT has 20 more hp (325 vs 305), enough to notice on highway on-ramps and when passing. The 2026 GMC Sierra 1500 AT4 also delivers 95 more lb-ft of torque (495 vs 400), which matters for trailer stability and pulling heavy loads up grades. Both use 4WD.
What It Actually Costs to Own
The 2026 GMC Sierra 1500 AT4 saves roughly $274/year on fuel at $3.50/gallon and 12,000 annual miles. Over five years, that is $1,370.
Size, Space, and Daily Reality
The 2026 GMC Sierra 1500 AT4 weighs 605 lbs more. Heavier vehicles tend to feel more planted at highway speed but use more fuel and are harder to stop quickly.
Which One Should You Buy?
Choose the 2026 GMC Sierra 1500 AT4 when lower running costs matter to you, roughly $274/year less on fuel. Choose the 2025 Ford F-150 XLT when you want to keep $17,305 in your pocket and the 2025 Ford F-150 XLT 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 Ford or any dealership.