2026 GMC Yukon Denali Ultimate vs 2026 INFINITI QX80 AUTOGRAPH
$8,200 less vs 30 more hp and 56 more lb-ft torque. That is the real fork. Key numbers: $8,200 price gap, 420 vs 450 hp, 16 vs 17 MPG.
The Yukon Denali Ultimate leads on $8,200 less. The QX80 AUTOGRAPH leads on 30 more hp, 56 more lb-ft torque. 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 Yukon Denali Ultimate | 2026 INFINITI QX80 AUTOGRAPH |
|---|---|---|
| Pricing | ||
| MSRP | $103,300 | $111,500 |
| Powertrain | ||
| Engine | 6.2L V8 | 3.5L V6 Turbo |
| Horsepower | 420 hp | 450 hp |
| Torque | 460 lb-ft | 516 lb-ft |
| Transmission | 10-speed shiftable automatic | 9-speed shiftable automatic |
| Drivetrain | 4WD | 4WD |
| Fuel Economy | ||
| City MPG | 14 | 16 |
| Highway MPG | 18 | 19 |
| Combined MPG | 16 | 17 |
| Fuel Tank | 24.0 gal | 23.6 gal |
| Annual Fuel Cost (EPA) | $3,600/yr | $3,400/yr |
| Dimensions | ||
| Curb Weight | 5,868 lbs | 6,205 lbs |
| Wheelbase | 121.0" | 121.1" |
| Length | 210.1" | 211.2" |
| Width | 81.0" | 83.3" |
| Height | 76.5" | 78.0" |
| Safety | ||
| NHTSA Overall | 5/5 stars | No published data |
| IIHS Award | No published data | TSP+ |
| Warranty | ||
| Bumper-to-Bumper | 3yr/36k | No published data |
| Powertrain | 5yr/60k | No published data |
| Corrosion | 6yr/100k | No published data |
| Roadside Assistance | 5yr/60k | No published data |
Frequently Asked Questions
What is the price difference between the 2026 GMC Yukon Denali Ultimate and 2026 INFINITI QX80 AUTOGRAPH?
The 2026 GMC Yukon Denali Ultimate starts at $103,300, $8,200 less than the 2026 INFINITI QX80 AUTOGRAPH at $111,500. On a 60-month loan that is roughly $144/month. All prices are MSRP before destination and dealer fees.
Who should choose the 2026 GMC Yukon Denali Ultimate?
The 2026 GMC Yukon Denali Ultimate is the stronger pick when you want to keep $8,200 in your pocket and the 2026 GMC Yukon Denali Ultimate covers your needs.
Who should choose the 2026 INFINITI QX80 AUTOGRAPH?
The 2026 INFINITI QX80 AUTOGRAPH is the stronger pick when lower running costs matter to you, roughly $154/year less on fuel; the extra 30 hp matters for your commute or driving style.
Which gets better fuel economy, the 2026 GMC Yukon Denali Ultimate or 2026 INFINITI QX80 AUTOGRAPH?
The 2026 INFINITI QX80 AUTOGRAPH rates 17 combined MPG, 1 MPG ahead.
Which is more powerful, the 2026 GMC Yukon Denali Ultimate or 2026 INFINITI QX80 AUTOGRAPH?
The 2026 INFINITI QX80 AUTOGRAPH produces 450 hp, 30 more than the 2026 GMC Yukon Denali Ultimate at 420 hp. The 2026 INFINITI QX80 AUTOGRAPH also leads in torque at 516 lb-ft vs 460 lb-ft. The 2026 GMC Yukon Denali Ultimate runs a 6.2L V8; the 2026 INFINITI QX80 AUTOGRAPH uses a 3.5L V6 Turbo.
Is the 2026 GMC Yukon Denali Ultimate bigger than the 2026 INFINITI QX80 AUTOGRAPH?
The 2026 INFINITI QX80 AUTOGRAPH is 1.1″ longer at 211.2″ vs 210.1″. The 2026 INFINITI QX80 AUTOGRAPH has a 0.1″ longer wheelbase, which typically means more rear-seat legroom.
Explore more: GMC trims, GMC Yukon trims, INFINITI trims, INFINITI QX80 trims
The Yukon–QX80 Decision
Cross-shopping full-size SUVs means weighing interior space, ride quality, and ownership costs. Here is how the Yukon and QX80 compare. The $8,200 gap adds up to $144/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 2026 GMC Yukon Denali Ultimate runs a 6.2L V8; the 2026 INFINITI QX80 AUTOGRAPH uses a 3.5L V6 Turbo. The 2026 INFINITI QX80 AUTOGRAPH has 30 more hp (450 vs 420), enough to notice on highway on-ramps and when passing. The 2026 INFINITI QX80 AUTOGRAPH adds 56 more lb-ft of torque (516 vs 460), giving it stronger low-end pull off the line. Both use 4WD.
The Ownership Math
The 2026 INFINITI QX80 AUTOGRAPH saves roughly $154/year on fuel at $3.50/gallon and 12,000 annual miles. Over five years, that is $770.
Living With the Yukon vs the QX80
The 2026 INFINITI QX80 AUTOGRAPH weighs 337 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 2026 GMC Yukon Denali Ultimate when you want to keep $8,200 in your pocket and the 2026 GMC Yukon Denali Ultimate covers your needs. Choose the 2026 INFINITI QX80 AUTOGRAPH when lower running costs matter to you, roughly $154/year less on fuel. At $144/month more, the 2026 INFINITI QX80 AUTOGRAPH needs to earn that gap with something you use weekly.
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 INFINITI or any dealership.