The short answer
Based on available data, the Mazda CX-5 comes out ahead of the Infiniti QX30 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
Mixed to negative sentiment overall. The vehicle is praised by some owners for its attractive design, sporty driving dynamics, good fuel economy from the turbocharged four-cylinder engine, and high-quality interior materials, especially when purchased as a used value proposition. However, a very strong and recurrent theme across owner discussions is significant concern over electrical and software glitches, which manifest in numerous, often dangerous, ways.
Best version to buy
Insufficient owner data available to designate a specific trim or model year as "best." Owner discussions reference various model years (2017-2019) and trims (Sport, AWD) without a clear consensus on a preferred version. The fundamental platform and powertrain are consistent across the model run.
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 QX30, based on the data above. If the specific known issues on the Mazda CX-5 are a dealbreaker, the Infiniti QX30 is worth a closer look instead.
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Which is more reliable, the Infiniti QX30 or the Mazda CX-5?
Owner reports lean more positive on reliability for the Mazda CX-5 than the Infiniti QX30. See the known issues comparison above for the specific concerns owners report on each.
Which is better for families, the Infiniti QX30 or the Mazda CX-5?
Both seat a similar number of passengers based on our data. The Infiniti QX30 is classed as a Hatchback, the Mazda CX-5 as a SUV, which affects cargo space and ride height for family use.
Which has better fuel economy, the Infiniti QX30 or the Mazda CX-5?
Fuel consumption data is limited for one or both models. Check the specs table above for the figures available on each catalogued version.
Which is cheaper to maintain, the Infiniti QX30 or the Mazda CX-5?
Exact maintenance costs aren't in our data, but owner reports mention cost-related concerns more often for the Infiniti QX30 than the Mazda CX-5. See the known issues comparison above.