IsItAGoodCar
Reliability Guide

Common Problems with the
2021 Mazda CX-3 (DK)

We've identified 2 known issues that can affect the 2021 Mazda CX-3 (DK). None are considered critical, but they're worth knowing about before you buy.

2
Known Issues
0
Serious
1
Moderate
1
Minor

All Known Issues

AC Condenser Corrosion

ModerateCooling System

The AC condenser is very prone to stone chip damage and corrosion, leading to a loss of refrigerant.

Est. Repair Cost: £250–£500
Warning Signs:

AC stops blowing cold air

What to Inspect:
  • Check for oily residue or dark patches on the condenser behind the front grille
Verified by IsItAGoodCar Research Team

Safety Sensor Misting

MinorElectrics & Electronics

The camera/sensor unit behind the rearview mirror can mist up in cold or damp weather, disabling safety systems.

Est. Repair Cost: £0
Warning Signs:

"Smart City Brake Support Disabled" message, Auto-wipers stop working

What to Inspect:
  • Usually clears once the cabin warms up; check for signs of excessive moisture in the cabin
Verified by IsItAGoodCar Research Team

Buying Tips for 2021 Mazda CX-3 (DK)

  • ✓The AC condenser is the most common failure; check it works before buying.
  • ✓Inspect the side bolsters on the seats for premature wear or collapse.
  • ✓Check the infotainment system for "ghost" inputs.
2015–20202022
Check a 2021 Mazda CX-3 (DK) by Registration