Common problems

Mazda CX-30 common problems and reliability issues

Honest rundown of the most common Mazda CX-30 faults, what to watch for, and how to keep one running well.

Updated 4th September 2026 DVSA data: Across 20,411 recorded MOT tests, 6.3% failed.

Mazda CX-30
Image via Wikipedia, CC-licensed.

TL;DR

The Mazda CX-30 is generally reliable but has some common issues, particularly engine misfires in 2020-2022 models, occasional transmission problems in 2020 models, and suspension wear from 2020 to 2023. Regular maintenance is essential for optimal performance and reliability.

Engine Issues

The Mazda CX-30 generally has a reliable engine, but some owners report engine misfires, especially in 2020 to 2022 models. These misfires can reduce performance and increase fuel consumption. Regular servicing and using quality fuel can help prevent these issues, along with timely attention to any warning lights.

Transmission Problems

Transmission issues in the CX-30 are rare, but some drivers have experienced rough shifting in the automatic gearbox, particularly in 2020 models. If you notice unusual noises or difficulty changing gears, it is wise to have the transmission inspected. Regular transmission fluid changes can help maintain smooth operation.

Suspension Concerns

Premature wear on suspension components has been noted in models from 2020 to 2023, potentially leading to a less comfortable ride and decreased handling. Regular checks of the suspension system can identify issues early. Changes in ride quality or unusual noises when driving over bumps may indicate suspension problems.

Electrical Faults

Electrical problems, especially with the infotainment system, have been reported in early 2020 models. These issues can often be resolved with software updates, and Mazda has issued recalls for these concerns. Ensure any outstanding recall work is completed, as some users have also experienced battery drain linked to software glitches.

Recalls and Safety

The Mazda CX-30 has had recalls primarily related to software issues affecting the infotainment system. It is essential to check the vehicle’s history for any outstanding recalls and ensure necessary repairs have been made. Completing safety recalls is crucial for the vehicle’s reliability and safety.

What people are asking

What year to stay away from Mazda CX-30?

When considering a CX-30, especially used, it is advisable to avoid earlier turbo trims, particularly around 2021, which have more reported issues. Prefer 2022 to 2024 non-turbo models for a lower likelihood of oil consumption or mechanical problems.

Is a used Mazda CX-30 a good buy?

A used Mazda CX-30 can exceed 150,000 miles with regular servicing and care. Mazda’s reputation for building durable, low-maintenance vehicles enhances the CX-30’s long-term value, making it a solid choice for buyers looking for longevity.

Is the Mazda CX-30 a reliable SUV?

The Mazda CX-30 is generally reliable, though not without flaws.

Does the Mazda CX-30 have rust issues?

Reports indicate that white stains, oxidation, or rust streaks can appear on the doors from under the mirror housing in models from 2020 to 2022. This is a concern for some owners regarding the vehicle’s exterior durability.

What owners say

While the car performs well overall, concerns about engine misfires, particularly in earlier models, have been noted. Regular maintenance and quality fuel are recommended to mitigate performance and fuel efficiency issues. Many owners have shared experiences about the CX-30’s reliability.

They advise monitoring transmission fluid levels and changing it regularly to prevent significant repairs later. In discussions, users have mentioned automatic transmission problems, especially rough shifting in 2020 models.

Suspension wear has also been a concern, with many owners reporting diminished ride quality in models from 2020 to 2023. Regular inspections and vigilance for changes in handling or comfort are recommended.

Some users have experienced battery drain linked to software issues, advising others to check for updates and ensure all recalls are addressed. Electrical faults, particularly with the infotainment system, have been discussed in various forums.

Lastly, UK buyers have emphasised the importance of checking the vehicle’s recall history before purchase, as ensuring all necessary repairs are completed can significantly affect reliability and safety.

Mazda CX-30 recall record

3 recalls have been issued for the Mazda CX-30, between 2020 and 2023.

  1. On affected vehicles the images from the rear view / 360 cameras may not display.

    R/2023/312

    Issued 6 November 2023

    On affected vehicles the images from the rear view / 360� cameras may not display.

    Remedy:Re-program the View Monitor Control (VMC) module with improved software.

    Affects cars built Jun 2023 to Sept 2023

  2. THE POWERED TAILGATE MAY PARTIALLY LOWER UNEXPECTEDLY FROM THE FULLY OPENED POSITION IN CERTAIN SITUATIONS

    R/2021/077

    Issued 12 April 2021

    The powered tailgate may partially lower unexpectedly from the fully opened position in certain situations.

    Remedy:Inspect the production information and update the software of the power tailgate drive unit. Where necessary replace the power tailgate drive unit.

    Affects cars built Apr 2019 to Oct 2020

  3. VEHICLES MAY UNEXPECTEDLY STOP DUE TO INADVERTENT ACTIVATION OF THE AUTOMATED SMART BRAKE SUPPORT (SBS) SYSTEM

    R/2020/009

    Issued 29 January 2020

    Vehicles may unexpectedly stop due to inadvertent activation of the automated Smart Brake Support (SBS) system

    Remedy:The vehicle control module is reprogrammed with modified software.

    Affects cars built Apr 2019 to Oct 2019

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-30 MOT record

From 20,411 recorded MOT tests, 6.3% failed.

MOT pass and failure rates by year of first registration
RegisteredTestsFailedMedian mileage
20232463.3%18,794 mi
20225,9435.1%21,902 mi
20217,8846.2%27,924 mi
20206,1087.7%32,395 mi
201923012.6%35,027 mi

Most common reasons for failure

  1. Tyre tread depth not in accordance with the requirements31.2%
  2. a brake lining or pad worn below 1.5mm20.6%
  3. A tyre seriously damaged19.7%
  4. Brake disc or drum excessively weakened, insecure or fractured15.7%
  5. A shock absorber damaged to the extent that it does not function or showing signs of severe leakage12.7%

Figures cover every Mazda CX-30 tested in the DVSA dataset, not this specific car. Check a registration for the actual history of one vehicle.

Mazda CX-30 official figures

Median across 67 variants on sale, petrol electric.

Combined economy
49.6 mpg
WLTP median across variants
CO2 emissions
129 g/km
Sets the first-year tax rate

Official figures for new cars. Real economy varies with driving, load and conditions.

Frequently asked questions

What are the common engine problems with the Mazda CX-30?

Some owners have reported issues with engine misfires, particularly in models from 2020 to 2022.

Are there any transmission issues?

Transmission problems are rare, but a few drivers have noted rough shifting in the automatic gearbox from 2020 onwards.

What should I watch for in the suspension?

Some reports indicate premature wear on suspension components, especially in models manufactured between 2020 and 2023.

Are there any known recalls for the CX-30?

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.

How reliable is the Mazda CX-30?

Overall, the Mazda CX-30 has a good reliability rating, but it's important to keep an eye on specific issues.

What maintenance should I perform regularly?

Regular oil changes, brake inspections, and checking tyre pressure are essential to keep the CX-30 running well.

Sources