Compare two new cars by price, estimated monthly payment, fuel economy, and other specifications. Data comes from the CarPayCheck.com catalog and uses your selected financing terms.
| Q3 | CX-50 | |
|---|---|---|
| Manufacturer | Audi | Mazda |
| Starting price | — | — |
| Monthly payment | — | — |
| Fuel type | Gasoline | Hybrid |
| Fuel economy | 25.0 mpg | 38.0 mpg |
| CO₂ emissions | 362 g/mi | 233 g/mi–356 g/mi |
| Annual maintenance cost | — | — |
The MIB3 infotainment system in 2019-2021 Q3s can freeze, reboot, or go black while driving, which can also cut off audio, Bluetooth, and navigation. If the screen dies, the backup camera feed may be lost, creating a safety and distraction risk. A covered software update is usually free, but a failed MMI screen or head unit replacement costs around $1,500 at an independent shop.
The EA888 2.0T engine in 2019-2023 Q3s can develop a coolant leak from the plastic water pump and thermostat housing, often between 20,000 and 40,000 miles. Look for repeated low-coolant warnings, a sweet coolant smell, or drips under the engine bay. Ignoring it can lead to overheating and major engine damage. Independent replacement of the water pump and thermostat assembly typically costs about $1,100.
The panoramic sunroof on 2019-2022 Q3s can leak water into the front footwells, especially after heavy rain or a car wash, due to blocked drains or seal deformation. Check for damp carpets and a musty odor before moisture reaches body control modules or wiring and causes electrical shorts. Clearing the blocked drain tubes costs about $300, while seal replacement can be more expensive.
Some 2019-2021 Q3s have a rear camera that shows a black screen or a "Camera Malfunction" message when reversing, due to an MIB3 software or hardware fault. This reduces rear visibility and raises the risk of a low-speed collision. If covered by NHTSA recall 22V-246, the dealer software flash is free; out of warranty, a reflash costs about $200 and camera module replacement about $700.
On 2023, 2024, and 2025 CX-50s equipped with Mazda Genuine Accessory trailer hitches, the wiring harness can detach and become damaged, causing trailer lights and brakes to fail. This increases the risk of a crash or trailer separation. Mazda issued recalls for these model years, so the harness repair is covered at no out-of-pocket cost.
Approximately 2,410 2023 CX-50s may have a damaged ABS hydraulic control unit that reduces braking ability. This can increase the risk of a crash. A recall was issued, and the repair is free of charge.
On about 1,000 2025 CX-50s, including hybrid and non-hybrid models, front suspension fastener bolts may not have been tightened properly. This can allow suspension components or wheels to detach, leading to loss of control and a crash. A recall covers the repair at no out-of-pocket cost.
A small number of 2025 CX-50 Hybrids have a gear shifter that can be moved from Neutral to Drive without pressing the brake pedal. This can cause unexpected vehicle movement and increase crash risk. Mazda recalled these vehicles and the repair is free.
Some 2025 CX-50s, including one CX-50 and one CX-50 Hybrid, have incorrectly configured airbag module software that may cause the airbag to deploy improperly. This increases the risk of injury during a crash. A recall was issued and the software repair is free of charge.
Audi Q3 and Mazda CX-50 suit different driving needs. The main differences below cover price, monthly payment, fuel economy, and running costs.
The models use different powertrains: Q3 — Gasoline; CX-50 — Hybrid. The better choice depends on your daily route and access to charging.
The final choice is about more than numbers: annual distance, city or highway use, and the space your household needs all matter. Use the CarPayCheck.com calculator to apply your financing terms and evaluate both cars in your situation.
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