DecodedCarsInfiniti QX55 vs Lexus RX
2025 Infiniti QX55 vs 2025 Lexus RX — two small SUVs compared on efficiency, size, safety and reliability.
The short version
The Lexus RX is more fuel-efficient: 36 vs 25 MPG combined in its best version.
That works out to about $1,000 a year less in fuel for the Lexus RX (EPA estimate, 15,000 miles).
The Lexus RX is the bigger car, about 6 inches longer.
Across all model years since 2005, the Infiniti QX55 has had fewer recall campaigns (2 vs 26).
The two cars
The 2025 Infiniti QX55 is a small SUV offered with a 2.0L 4-cyl turbo engine and all-wheel drive. It measures about 186 inches long and 75 inches wide on a 110-inch wheelbase, with a curb weight of roughly 4,015 lb.
The 2025 Lexus RX is a small SUV offered with 2 engines (2.5L 4-cyl and 2.4L 4-cyl turbo), including a hybrid version and all-wheel drive and front-wheel drive. It measures about 193 inches long and 76 inches wide on a 112-inch wheelbase, with a curb weight of roughly 4,288 lb (350 4dr SUV).
Buying used? The 2024 QX55 and the 2022 RX have the fewest problems in our data; avoid the 2017 RX.
Basics
Efficiency
Performance & space
Safety & reliability
Interest
Green = clearly better. Prices are not included. How we calculate this →
Which one should you choose?
Choose the Infiniti QX55 if…
- You want something easier to park (6 in shorter)
- You put reliability history first (2 vs 26 recalls since 2005)
Choose the Lexus RX if…
- You want lower fuel bills (36 vs 25 MPG)
- You want more room (6 in longer)
- You want a hybrid or electric option
Pros & cons of each
2025 Infiniti QX55
- No recalls so far
- Premium fuel requiredEvery gasoline version is rated for premium, which raises running costs.
2025 Lexus RX
- Excellent fuel economyUp to 36 MPG combined — 41% better than the average 2025 small SUV (25.6 MPG).
- Hybrid version availableOffered as a hybrid and plug-in hybrid as well as gas.
- AWD / 4WD available
- Lots of standard safety tech5 of 5 key driver aids standard on the versions we checked.
- Premium fuel requiredEvery gasoline version is rated for premium, which raises running costs.
Full 2025 Infiniti QX55 specs →Full 2025 Lexus RX specs →Compare fuel costs for your driving →Compare size & garage fit →