DecodedCars2018 Infiniti QX80
Trims, performance, features, fuel economy, safety and known problems — with the pros and cons against similar 2018 models.
- Class
- Standard Sport Utility Vehicle 2WD
- Body styles
- AWD 4dr SUV
- Engines
- 5.6L 8-cyl
- Drivetrain
- Rear-Wheel Drive, 4-Wheel Drive
- Fuel
- Premium Gasoline
- MPG (best)
- 16 combined · 14 city / 20 hwy
- Length
- 210.2 in
- Curb weight
- 5,889 lb
- NHTSA rating
- Not rated
- Recalls
- 2 campaigns
Pros & cons
What's good
- AWD / 4WD available
- Few owner complaints9 complaints filed with NHTSA versus about 37 for similar models.
Watch out for
- Below-average fuel economyBest version gets 16 MPG combined, 18% below the 2018 standard SUV average of 19.5 MPG.
- Premium fuel requiredEvery gasoline version is rated for premium, which raises running costs.
- Higher rollover riskNHTSA estimates a 23.6% chance of rollover in a single-vehicle crash.
Calculated from EPA, NHTSA and vPIC data against 4 similar 2018 models — not a review. How we calculate this →
Overview
The 2018 Infiniti QX80 is a standard SUV offered with a 5.6L 8-cyl engine and rear-wheel drive and 4-wheel drive.
It measures about 210 inches long and 80 inches wide on a 121-inch wheelbase, with a curb weight of roughly 5,889 lb.
EPA rates its most efficient version at 16 MPG combined (14 city / 20 highway), 18% worse than the 2018 standard SUV average of 19.5 MPG, for an estimated $5,150 a year in fuel.
NHTSA has not published a 5-Star overall rating for this model year.
It has 2 recall campaigns on file and owners have filed 9 complaints with NHTSA since 2015, most often about the electrical system.
What changed for 2018
No changes to engines, powertrains, drivetrains, size, EPA ratings or NHTSA crash rating compared with the 2017 QX80 — a carry-over year in the data.
Compared with 2017; trim, feature and price changes aren't covered. See the 2017 QX80 →
Dimensions & weight
| Body | Length | Width | Height | Wheelbase | Track F / R | Curb weight | Weight F/R |
|---|---|---|---|---|---|---|---|
| AWD 4dr SUV | 210.2 in | 79.9 in | 76 in | 121.3 in | 67.7 / 68.1 in | 5,889 lb | 52/48 |
Transport Canada CVS (Open Government Licence – Canada), Canadian-market figures.
Will it fit your garage? Check with your measurements →Engines, MPG & running costs
| Version | Engine | Transmission | Drive | City / Hwy / Comb | vs. class | Fuel / yr | CO₂ g/mi |
|---|---|---|---|---|---|---|---|
| QX80 2WD | 5.6L 8-cyl | Automatic (S7) | Rear-Wheel Drive | 14 / 20 / 16 | -18% | $5,150 | 547 |
| QX80 4WD | 5.6L 8-cyl | Automatic (S7) | 4-Wheel Drive | 13 / 19 / 15 | -20% | $5,500 | 593 |
EPA estimates; "vs. class" is combined MPG against the 2018 EPA class average. How we calculate this →
Safety ratings & technology
| Version | Overall | Frontal | Driver / passenger | Side | Side pole | Rollover | Rollover risk |
|---|---|---|---|---|---|---|---|
| 2018 Infiniti QX80 SUV AWD | Not rated | Not rated | –★ / –★ | ★★★★★ | ★★★★★ | ★★★★★ | 21.6% |
| 2018 Infiniti QX80 SUV RWD | Not rated | Not rated | –★ / –★ | ★★★★★ | ★★★★★ | ★★★★★ | 23.6% |
Similar 2018 standard SUVs
| Model | Best MPG / range | NHTSA overall | Recalls |
|---|---|---|---|
| 2018 Infiniti QX80 (this car) | 16 MPG | Not rated | 2 |
| 2018 Cadillac Escalade | 17 MPG | ★★★★★ | 2 |
| 2018 Lincoln Navigator | 19 MPG | ★★★★★ | 12 |
| 2018 Lincoln MKT | 19 MPG | Not rated | 2 |
| 2018 Mercedes-Benz GLS-Class | 19 MPG | Not rated | 0 |
Recalls (2)
Equipment › Other › Labels · Jul 15, 2026
NHTSA campaign 26V455000 · 168,149 vehicles
- Problem
- Nissan North America, Inc. (Nissan) is recalling certain 2020-2026 Nissan Armada, 2011-2013 Infiniti QX56, and 2014-2027 QX80 vehicles equipped with 22" wheels. The Gross Axle Weight Rating (GAWR) listed on the certification label is incorrect, which can allow the vehicle to be overloaded. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard number 110, "Tire Selection and Rims."
- Risk
- An overloaded vehicle can increase the risk of a crash.
- Fix
- Dealers will install new labels, free of charge. Additionally, Nissan will mail replacement labels to owners. Interim letters notifying owners of the safety risk were mailed September 2, 2026. Additional letters will be sent once the final remedy is available, anticipated Fall 2026. Owners may contact Nissan customer service at 1-800-867-7669. Nissan's numbers for this recall are R26B1 and P6A13/4. Vehicle Identification Numbers (VINs) involved in this recall became searchable on NHTSA.gov on July 16, 2026.
Back Over Prevention › Sensing System › Camera · Sep 12, 2019
NHTSA campaign 19V654000 · 1,228,830 vehicles
- Problem
- Nissan North America, Inc. (Nissan) is recalling certain 2018-2019 Nissan Altima, Armada, Frontier, Kicks, Leaf, Maxima, Murano, NV, NV200, Pathfinder, Rogue, Rogue Sport, Sentra, Titan, Titan Diesel, Versa Note and Versa Sedan vehicles, as well as Infiniti Q50, Q60, QX30 and QX80 vehicles. Additionally included are 2019 Nissan GT-R and Taxi and Infiniti QX50, QX60, Q70, Q70L vehicles. The back-up camera and display settings can be adjusted such that the rear view image is no longer visible and the system will retain that setting the next time the vehicle is placed in reverse. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard (FMVSS) number 111, "Rear Visibility."
- Risk
- The lack of an image in the back-up camera display increases the risk of a crash.
- Fix
- Nissan will notify owners in phases, having dealers update the back-up camera settings software, free of charge. The recall began November 11, 2019 and all affected VINs should be activated. Owners may contact Nissan customer service at 1-800-867-7669 or INFINITI customer service at 1-800-662-6200.
Not every 2018 Infiniti QX80 is affected — only a VIN check confirms your car.
Owner-reported problems
Unverified owner reports; best-sellers collect more.
Used 2018 Infiniti QX80 buyer's checklist
- Run the VIN at nhtsa.gov/recalls. 2 recalls this year — ask for proof of repairs.
- Electrical System — 4 owner reports. Test every window, lock, light, screen and USB port; check the battery age.
- Air Bags — 2 owner reports. Confirm the airbag warning light turns off after start-up and any airbag recall was completed.
- Seat Belts — 1 owner reports. Confirm the airbag warning light turns off after start-up and any airbag recall was completed.
- Mileage to watch. Owners typically reported problems around 25,000 miles; ask what was repaired near that point.
- Before you pay: service records, a history report and an independent inspection.
Generated by DecodedCars from NHTSA recalls and owner complaints for the 2018 Infiniti QX80. Not a substitute for a professional inspection.
Other QX80 years
Compare all years →| Year | MPG (best) | Length | Overall | Recalls | Complaints |
|---|---|---|---|---|---|
| 2027 QX80 | 18 | – | Not rated | 1 | 4 |
| 2026 QX80 | 18 | 211.4 in | Not rated | 2 | 7 |
| 2025 QX80 | 18 | 211.4 in | Not rated | 4 | 8 |
| 2024 QX80 | 16 | 210.2 in | ★★★★★ | 1 | 2 |
| 2023 QX80 | 16 | 210.2 in | ★★★★★ | 1 | 2 |
| 2022 QX80 | 16 | 210.2 in | Not rated | 1 | 1 |
| 2021 QX80 | 16 | 210.2 in | ★★★★★ | 3 | 7 |
| 2020 QX80 | 16 | 210.2 in | ★★★★★ | 2 | 6 |
| 2019 QX80 | 16 | 210.2 in | ★★★★★ | 2 | 21 |
| 2017 QX80 | 16 | 209.1 in | Not rated | 1 | 17 |
| 2016 QX80 | 16 | 209.1 in | Not rated | 1 | 15 |
| 2015 QX80 | 16 | 209.1 in | Not rated | 2 | 18 |
Sources: EPA, NHTSA, Transport Canada, Wikimedia Commons. Not affiliated with NHTSA, the EPA or Infiniti. How we calculate this →