IsItAGoodCar
Reliability Guide

Common Problems with the
2014 Mazda 6 (GJ)

By 2014 the GJ Mazda 6 had established itself as one of the most stylish and engaging large family cars. The facelift brought improved infotainment while retaining the proven mechanicals.

What changed for 2014

  • •Mid-cycle facelift with revised styling
  • •Updated MZD Connect infotainment
  • •All early issues addressed
  • •Strong used values reflecting driver appeal

Common MOT watch-outs

  • !Diesel carbon buildup in intake manifold
  • !Infotainment ghost touching
  • !Paint showing stone chips
4
Known Issues
2
Serious
1
Moderate
1
Minor

All Known Issues

2.2 SkyActiv-D Oil Dilution & DPF Stress

SeriousEngine

Frequent interrupted regenerations let diesel contaminate the oil, accelerating timing chain, turbo and bottom-end wear.

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

Rising oil level on dipstick, DPF warning light, Limp mode after town use

What to Inspect:
  • Check the dipstick level carefully
  • Ask whether the car did mainly motorway miles
Verified by IsItAGoodCar Research Team

Camshaft Wear (Early Diesels)

SeriousEngine

Like the CX-5, early 2.2 diesel 6s suffered from premature camshaft wear leading to metal contamination in the oil and turbo failure.

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

Sudden loss of power, Turbo whine, Metal particles in oil filter

What to Inspect:
  • Check if the car had the camshaft recall or replacement work done
Verified by IsItAGoodCar Research Team

i-ELOOP Capacitor Failure

ModerateElectrics & Electronics

Cars with Mazda's capacitor-based energy recovery system can trigger charging warnings and disable stop-start when the capacitor or control module gets weak.

Est. Repair Cost: £250–£900
Warning Signs:

i-ELOOP warning light, i-stop unavailable, Charging system messages

What to Inspect:
  • Confirm the stop-start and charging system behave normally on the test drive
Verified by IsItAGoodCar Research Team

Bose Speaker Corrosion

MinorInterior & Trim

Moisture can enter the front door cavities and cause the Bose speaker coils to rust, leading to audio distortion.

Est. Repair Cost: £100–£250
Warning Signs:

Crackling or popping from front speakers, No sound from one side

What to Inspect:
  • Test the audio system at various volumes
Verified by IsItAGoodCar Research Team

Buying Tips for 2014 Mazda 6 (GJ)

  • The 2.0 SkyActiv-G petrol is the safe bet; be very wary of 2.2 diesels used for short trips.
  • Check the saloon boot floor and rear light seals for damp.
  • Make sure the i-ELOOP / i-stop system works properly and shows no charging warnings.
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Check a 2014 Mazda 6 (GJ) by Registration