2026 Infiniti QX55 Specs: MPG, Gas Mileage, Engine Size & Dimensions
2026 Infiniti QX55 Specs at a Glance
The 2026 Infiniti QX55 gets 25 mpg combined on the 2.0L All-Wheel Drive configuration, weighs 4,015 lbs, measures 186.2 in long. Every figure below comes from EPA, NHTSA, or manufacturer published data — no estimates.
Detailed Specifications
MPG & Fuel Economy
MPG for every year and trim
View details →Engine Specifications
Engine Specs for every year and trim
View details →Annual Fuel Cost
Fuel Cost for every year and trim
View details →Transmission Specifications
Transmission for every year and trim
View details →Drivetrain & Drive Type
Drivetrain for every year and trim
View details →Vehicle Class & EPA Size Category
Vehicle Class for every year and trim
View details →Maintenance Schedule & Service Intervals
Maintenance for every year and trim
View details →Dimensions & Size
Dimensions for every year and trim
View details →Curb Weight
Curb Weight for every year and trim
View details →Infiniti QX55 — All Years Overview
| Year | Trim | Engine | Trans | Drive | City | Hwy | Combined | Fuel |
|---|---|---|---|---|---|---|---|---|
| 2025 | Auto (AV-S8), 4 cyl, 2.0 L | 4 · 2.0L | Automatic (AV-S8) | All-Wheel Drive | 22 | 28 | 25 | Premium Gasoline |
| 2024 | Auto (AV-S8), 4 cyl, 2.0 L | 4 · 2.0L | Automatic (AV-S8) | All-Wheel Drive | 22 | 28 | 25 | Premium Gasoline |
| 2023 | Auto (AV-S8), 4 cyl, 2.0 L | 4 · 2.0L | Automatic (AV-S8) | All-Wheel Drive | 22 | 28 | 25 | Premium Gasoline |
| 2022 | Auto (AV-S8), 4 cyl, 2.0 L | 4 · 2.0L | Automatic (AV-S8) | All-Wheel Drive | 22 | 28 | 25 | Premium Gasoline |
Compare across every brand
All Infiniti QX55 specifications
Infiniti QX55 — Frequently Asked Questions
What is the fuel economy of the 2025 Infiniti QX55?
The Infiniti QX55 is EPA-rated at up to 25 MPG combined (22 city / 28 highway).
What engine does the 2025 Infiniti QX55 have?
The Infiniti QX55 uses a 2.0L 4-cylinder engine paired with an Automatic transmission.
What years of the Infiniti QX55 are covered here?
This page documents 4 verified Infiniti QX55 configurations across model years 2022–2025.
Which model year of the Infiniti QX55 is the most fuel efficient?
Every documented Infiniti QX55 model year lands on the same 25 MPG combined peak, so fuel economy is not a reason to prefer one year over another.
How many engine options does the Infiniti QX55 have?
Across every year on record the Infiniti QX55 uses one displacement, 2L, so trims differ by drivetrain and equipment rather than engine size.
Is the 2025 Infiniti QX55 front-wheel drive or all-wheel drive?
Every Infiniti QX55 configuration on record here is All-Wheel Drive; no alternative drivetrain appears in the 2022–2025 data.