Infiniti
QX80
Lexus
LX
Infiniti QX80 vs Lexus LX: 2025 Comparison
The short answer
Based on available data, the Lexus LX comes out ahead of the Infiniti QX80 on fuel economy and power. Check the specs table and owner sentiment below for the full comparison before deciding between the two. Both are covered by real owner reports on CarWizz.
Specs side by side
What owners say
QX80
Overall
Sentiment is mixed and heavily dependent on model year and purchase context. For the long-running generation produced from approximately 2014 through 2024, the consensus among owners is that it is a fundamentally solid, comfortable, and powerful full-size SUV that suffers from significant drawbacks in fuel economy, technology, and certain costly reliability issues. The 5.6L V8 engine (VK56VD) is very frequently praised for its power, smoothness, and general reliability.
Best version to buy
Insufficient owner data available to declare a consensus "best" trim or model year. Feedback indicates the pre-2020 models with the dual-screen infotainment are particularly disliked, while the 2022-2024 models with the updated single free-standing touchscreen are seen as an improvement.
Known issues
- ⚠Catalytic converter failure: Very expensive failure occurring frequently just outside of warranty, with repair costs cited from $1,700 to $2,600. Mentioned as a widespread issue across model years. Frequency: very frequent.
- ⚠Extremely poor fuel economy: Real-world consumption reported as low as 11-12 MPG in mixed driving. Considered a defining characteristic of the V8 model. Frequency: very frequent.
- ⚠Dated/Unreliable Infotainment System: Systems described as ancient, laggy, prone to freezing, and featuring a confusing dual-screen setup (pre-2020). Newer 2025 models also reported with infotainment glitches like screens turning off.
LX
Overall
Sentiment is strongly positive for the 200-series LX (specifically the LX 570), with owners praising its unparalleled build quality, long-term reliability, and "bank vault" solidity. It is consistently described as a vehicle engineered to last 25 years, with many reports of examples driving like new at 100,000 miles. The 300-series LX (LX 600) receives a more mixed reception.
Best version to buy
For the 200-series, the 2008+ LX 570 is frequently recommended for its 6-speed (and later 8-speed) transmission. The vehicle's Hydraulic Suspension (AHC) is highly praised for its smooth ride and adjustable height, and models with a functioning, rust-free AHC system are considered the best versions.
Known issues
- ⚠**300-series (LX 600):** * Terrible infotainment system and cabin ergonomics: multiple poorly utilized screens, confusing menu structures, slow response, and an overall dated interface compared to German rivals. Frequency: very frequent.
- ⚠**200-series (LX 570):** * Exposed radiator susceptible to damage from road debris. Frequency: isolated. * Potential for AHC system failure if vehicle has significant rust or lack of maintenance.
- ⚠**Engine Concerns (Potential, across platforms):** * Recall and reliability concerns for the new twin-turbo V6 engine used in related Toyota/Lexus trucks (Tundra, LX).
The verdict
The Lexus LX is the better choice for most buyers.
It has better fuel economy on its best-equipped version than the Infiniti QX80, based on the data above. If power matters more to you than running costs, the Infiniti QX80 is worth a closer look instead.
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Frequently asked questions
Which is more reliable, the Infiniti QX80 or the Lexus LX?
Owner reports show similar reliability sentiment for the Infiniti QX80 and the Lexus LX. Check the known issues listed above for specific differences between the two.
Which is better for families, the Infiniti QX80 or the Lexus LX?
Data on family-specific factors like cargo space is limited for one or both models, but based on available reports, both are positioned as practical daily drivers. Check the specs table above for seating and body type.
Which has better fuel economy, the Infiniti QX80 or the Lexus LX?
The Lexus LX is more fuel-efficient on paper: 11.8 L/100km combined versus 13.1 L/100km for the Infiniti QX80, based on the best-equipped catalogued version of each.
Which is cheaper to maintain, the Infiniti QX80 or the Lexus LX?
Exact maintenance costs aren't in our data, but owner reports mention cost-related concerns more often for the Infiniti QX80 than the Lexus LX. See the known issues comparison above.