Common problems

Mazda CX-3 common problems and reliability issues

Honest rundown of the most common Mazda CX-3 faults, what to watch for, and how to keep one running well.

Updated 4th September 2026 DVSA data: Across 24,965 recorded MOT tests, 13.4% failed.

Mazda CX-3
Image via Wikipedia, CC-licensed.

The Mazda CX-3 is generally regarded as a reliable vehicle, but like any car, it has its share of common problems. Issues often reported by owners include electrical faults, suspension wear, and engine performance concerns. Understanding these potential problems can help prospective buyers make informed decisions.

Electrical Issues

Electrical problems are among the most frequently reported issues with the Mazda CX-3. Owners have noted issues with the infotainment system, including unresponsive screens and Bluetooth connectivity problems. These faults can be frustrating, especially for those who rely heavily on technology while driving.

Additionally, some drivers have experienced problems with the car’s central locking system, which may fail to operate correctly. This can lead to inconvenience and security concerns. Regular checks of the electrical system during servicing can help mitigate these issues.

Suspension Wear

Suspension wear is another common problem that Mazda CX-3 owners may encounter. The vehicle’s suspension components, particularly the shock absorbers and bushings, can wear out over time, leading to a less comfortable ride and decreased handling performance. Owners have reported a noticeable drop in ride quality as these components age.

Regular inspections of the suspension system can help identify wear early, allowing for timely replacements. Keeping an eye on unusual noises or changes in handling can also alert drivers to potential suspension issues before they become severe.

Engine Performance Concerns

Some Mazda CX-3 owners have reported engine performance issues, particularly with the petrol variants. Symptoms may include rough idling, decreased power, and increased fuel consumption. These problems can be attributed to a variety of factors, including issues with the fuel injectors or air intake system.

Routine maintenance, including timely oil changes and air filter replacements, can help maintain engine performance. If performance issues arise, it is advisable to have the vehicle checked by a qualified technician to diagnose and rectify the underlying cause.

Transmission Problems

Transmission problems, while not as common, have been reported by some Mazda CX-3 owners. Issues may include difficulty shifting gears, slipping, or unusual noises during operation. These symptoms can indicate a need for transmission fluid changes or more serious internal issues.

It is essential to follow the manufacturer’s recommended maintenance schedule for the transmission to prevent potential problems. Regular fluid checks and changes can help ensure smooth operation and extend the life of the transmission.

Brake System Concerns

The brake system is critical for safety, and some Mazda CX-3 owners have reported issues such as premature wear of brake pads and discs. This can lead to reduced braking efficiency and increased stopping distances, which is a significant safety concern.

To avoid brake-related issues, it is advisable to have the braking system inspected regularly and to replace worn components promptly. Listening for unusual noises when braking can also help identify potential problems before they escalate.

Air Conditioning Problems

Air conditioning issues are another common complaint among Mazda CX-3 owners. Problems may include insufficient cooling, strange odours, or unusual noises when the system is in operation. These issues can stem from a variety of causes, including refrigerant leaks or faulty compressors.

Regular maintenance of the air conditioning system, including checks for leaks and the replacement of cabin filters, can help ensure optimal performance. If problems persist, a professional inspection may be necessary to diagnose and repair the issue effectively.

Mazda CX-3 recall record

5 recalls have been issued for the Mazda CX-3, between 2017 and 2022.

  1. LOW PRESSURE FUEL PUMP IMPELLER MIGHT BECOME DEFORMED

    R/2021/435

    Issued 4 January 2022

    The impeller in the low-pressure fuel pump may become deformed causing fuel pump failure.

    Remedy:Replace the low-pressure fuel pump with an improved part.

    Affects cars built Oct 2017 to Sept 2019

  2. CONTROL LOGIC WHICH MONITORS THE CHARGING CONTROL PROGRAM FAILS TO DIVERT ELECTRICAL POWER AWAY FROM CAPACITOR IN THE EVENT OF A FAULT

    R/2018/237

    Issued 17 September 2018

    On the subject vehicles the control logic which monitors the charging control program fails to divert the electrical power away from the capacitor when a fault is detected within the capacitor circuit. This can cause a short circuit inside the DCDC converter and could cause the engine to stall or overheating of the DCDC converter itself which could cause a fire. The fault is accompanied by the �i-ELOOP� warning light being illuminated on the instrument cluster along with the �i-Stop� warning light flashing The engine may in some circumstances stall and fail to restart. In extreme cases the DCDC converter could overheat and cause a fire

    Remedy:Reprogram the PCM with the correct control logic. If error code �U3000: 49-DCDC� is stored � the DCDC Converter must also be replaced.

    Affects cars built Feb 2015 to Apr 2017

  3. SOFTWARE ERROR CAN CAUSE ENGINE TO FAIL

    R/2018/087

    Issued 2 April 2018

    On the subject vehicles the engine protection logic does not work properly. When the engine speed reaches maximum with no engine load present � the software is unable to cut the engine. This could in extreme cases cause catastrophic engine failure. Immediate and catastrophic engine damage may result.

    Remedy:Re-program the engine protection software within the PCM.

    Affects cars built Apr 2015 to Nov 2017

  4. BRAKE HOSE RETAINING CLIP MAY FAIL.

    R/2017/203

    Issued 14 July 2017

    Surface finishing of brake hose retaining clip may be insufficient causing possibility of corrosion and failure of clip.

    Remedy:Replace brake hose clips with modified ones

    Affects cars built May 2016 to May 2016

1 older recall not shown.

A recall applies to a build range, not to every car of this model. Check a registration to see whether one specific vehicle has an outstanding recall.

Mazda CX-3 MOT record

From 24,965 recorded MOT tests, 13.4% failed.

MOT pass and failure rates by year of first registration
RegisteredTestsFailedMedian mileage
20197,4618.5%35,540 mi
20185,5689.7%43,987 mi
20174,81413.2%51,431 mi
20164,81520.3%59,407 mi
20152,30723.7%64,405 mi

Most common reasons for failure

  1. A tyre seriously damaged26.8%
  2. Tyre tread depth not in accordance with the requirements26.6%
  3. a brake lining or pad worn below 1.5mm19.7%
  4. Brake disc or drum excessively weakened, insecure or fractured14.8%
  5. Brake pipe damaged or excessively corroded12.1%

Figures cover every Mazda CX-3 tested in the DVSA dataset, not this specific car. Check a registration for the actual history of one vehicle.

Frequently asked questions

What are the most common issues with the Mazda CX-3?

Common issues with the Mazda CX-3 include electrical problems, issues with the infotainment system, and occasional suspension noise. Regular maintenance can help mitigate some of these problems.

How reliable is the Mazda CX-3?

The Mazda CX-3 generally has a good reputation for reliability. However, like any vehicle, it can experience issues, so it's important to check the service history before purchasing.

Are there any known engine problems with the Mazda CX-3?

Some owners have reported minor engine issues, such as rough idling or loss of power. Regular servicing and using quality fuel can help prevent these problems.

What should I look for when buying a used Mazda CX-3?

When buying a used Mazda CX-3, check for service records, look for signs of wear on the interior and exterior, and test the infotainment system. It's also wise to have a mechanic inspect the vehicle.

Is the Mazda CX-3 prone to rust?

The Mazda CX-3 is not particularly known for rust issues, but it's always a good idea to inspect the bodywork for any signs of corrosion, especially in older models.

How does the Mazda CX-3 perform in terms of fuel economy?

The Mazda CX-3 offers decent fuel economy for its class, with many owners reporting good mileage. However, actual performance can vary based on driving habits and conditions.

Are there any recalls on the Mazda CX-3?

Recalls are issued against individual vehicles rather than a model as a whole, so a model-level yes or no would be guesswork. Enter the registration on Honest Car Check and we check the DVSA record for that specific car. Where DVSA holds no status, confirm it with a franchised dealer using the VIN.

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