The short answer
Based on available data, the Infiniti QX50 comes out ahead of the Mazda CX-5 on 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.
Overall
Sentiment is sharply divided by generation, with a clear consensus that the 2016-2017 (first-generation) models are highly regarded, while the 2019+ (second-generation) models are widely criticized. The first-generation QX50, equipped with the 3.7L V6 and a 7-speed automatic transmission, is consistently praised for its powerful, reliable engine, sporty handling derived from the FM platform shared with the 370Z and G37, and strong value as a used vehicle. Owner satisfaction for these models is very high, with reports of trouble-free ownership up to high mileages.
Best version to buy
The 2016-2017 QX50 with the 3.7L V6 engine, RWD or AWD, and the 7-speed automatic transmission is overwhelmingly recommended as the best version. Specific praise is given to the 2016 model year, which received a stretched wheelbase for increased rear legroom.
Known issues
Overall
The sentiment is predominantly positive, with the CX-5 consistently praised for its reliability, premium interior feel, and engaging driving dynamics. It is frequently cited as a top recommendation for buyers seeking a dependable, well-built compact SUV. Owners appreciate its refined interior materials, which are often described as superior to mainstream competitors, and its handling, which is noted to be more car-like and enjoyable than many rivals.
Best version to buy
The consensus favors models equipped with the naturally aspirated 2.5L engine for its proven reliability, though the turbo variant is acknowledged for its added power. For used models, there is a strong preference for vehicles without Cylinder Deactivation (often found in non-turbo models from certain years) due to concerns about added complexity.
Known issues
The verdict
The Mazda CX-5 is the better choice for most buyers.
It has stronger reliability sentiment in owner reports than the Infiniti QX50, based on the data above. If the specific known issues on the Mazda CX-5 are a dealbreaker, the Infiniti QX50 is worth a closer look instead.
Common problems by model year
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Owner reports lean more positive on reliability for the Mazda CX-5 than the Infiniti QX50. See the known issues comparison above for the specific concerns owners report on each.
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.
The EPA rates the 2025 Infiniti QX50 at 25–26 mpg combined and the 2026 Mazda CX-5 at 26 mpg, depending on the version.
Exact maintenance costs aren't in our data, but owner reports mention cost-related concerns more often for the Infiniti QX50 than the Mazda CX-5. See the known issues comparison above.