IsItAGoodCar
Reliability Guide

Common Problems with the
2022 Mazda CX-30 (DM)

We've identified 3 known issues that can affect the 2022 Mazda CX-30 (DM). None are considered critical, but they're worth knowing about before you buy.

3
Known Issues
0
Serious
1
Moderate
2
Minor

All Known Issues

12V Battery Drain

ModerateElectrics & Electronics

The 12V battery can discharge unexpectedly, often due to the keyless entry system or other modules not entering "sleep" mode correctly.

Est. Repair Cost: £100–£200
Warning Signs:

Car won't start after being left for a few days, Low battery warnings

What to Inspect:
  • Ask if the battery has been replaced or if software updates for the BCM have been applied
Verified by IsItAGoodCar Research Team

Low-Speed Brake Squeal

MinorBrakes

Some CX-30s exhibit a high-pitched squeal when braking at very low speeds, often addressed by Mazda with specialised shims.

Est. Repair Cost: £0–£100
Warning Signs:

Squealing noise when braking at low speed, Noise disappears at higher speeds

What to Inspect:
  • Test brakes in a car park at low speed
Verified by IsItAGoodCar Research Team

Power Tailgate Malfunction

MinorElectrics & Electronics

The electric tailgate can fail to open, fail to close, or beep incessantly due to sensor or software issues.

Est. Repair Cost: £200–£600
Warning Signs:

Tailgate reverses when closing, Beeping sounds but no movement

What to Inspect:
  • Test the tailgate multiple times using both the button and the key fob
Verified by IsItAGoodCar Research Team

Buying Tips for 2022 Mazda CX-30 (DM)

  • ✓Battery drain is a common complaint; consider a trickle charger if the car is rarely used.
  • ✓Check for software updates regarding the Smart Brake Support system.
  • ✓Ensure the infotainment system has the latest firmware to avoid glitches.
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