IsItAGoodCar
Reliability Guide

Common Problems with the
2012 Mazda CX-5 (KE)

The KE CX-5 launched in the UK as Mazda's first SkyActiv model, establishing the brand in the premium compact SUV market. The 2.0 SkyActiv-G petrol proved bulletproof, though early 2.2 diesels had camshaft wear issues.

What changed for 2012

  • •UK launch of first-generation CX-5
  • •First Mazda with full SkyActiv technology
  • •Kodo design language introduced
  • •2.0 SkyActiv-G petrol as the reliable choice

Common MOT watch-outs

  • !2.2 diesel camshaft wear on pre-2014 cars
  • !Oil dilution from DPF regenerations
  • !Folding mirror motor failure
3
Known Issues
2
Serious
1
Moderate
0
Minor

All Known Issues

2.2 SkyActiv-D Oil Dilution

SeriousEngine

Fuel enters the oil during aborted DPF regens. If the oil level rises too high, it can destroy the engine.

Est. Repair Cost: £500–£4,000
Warning Signs:

Rising oil level on dipstick, DPF warning lights, Limp mode

What to Inspect:
  • Pull the dipstick; if the oil is above the "X" mark, avoid the car
Verified by IsItAGoodCar Research Team

Camshaft Wear (Early Diesels)

SeriousEngine

Early 2.2 SkyActiv-D engines had a batch of "soft" camshafts that would wear prematurely, sending metal shavings through the engine and turbo.

Est. Repair Cost: £2,000–£4,000
Warning Signs:

Loss of power, Whining noise from turbo, Engine warning light

What to Inspect:
  • Check for a full service history
  • Listen for unusual turbo whine
  • Ask if the vacuum pump or turbo has been replaced
Verified by IsItAGoodCar Research Team

Exhaust Pressure Sensor Failure

ModerateExhaust & Emissions

A common failure on the 2.2D that triggers limp mode and multiple warning lights.

Est. Repair Cost: £200–£400
Warning Signs:

Limp mode, Engine management light, DPF warning lights

What to Inspect:
  • Check for diagnostic codes related to exhaust pressure
Verified by IsItAGoodCar Research Team

Buying Tips for 2012 Mazda CX-5 (KE)

  • The 2.2 diesel is high risk for camshaft wear on pre-2014 models.
  • Check for vibrating wing mirror glass at high speeds.
  • Verify the condition of the leather seats, as the bolsters can wear prematurely.
2013–2014
Check a 2012 Mazda CX-5 (KE) by Registration