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Used Mazda 6 Fault Guides

Used Car Expert Fault Guides tell you the common Mazda 6 faults and wear items that can become problems and big bills for their owner.

Independent research indicated that using our fault guides to check a car before you buy it can save you an average of £300 in surprise bills and hidden problems.

That's because our Mazda 6 fault guides are written so that anyone can understand them – even if you know nothing about cars and have no tools. For every common fault, we tell you what to look for, what it means and what it costs.

Select your Mazda 6 fault guide:

Mazda 6 (2002 - Present) Fault Guide
Mazda 6 (2008-) Fault Guide


Mazda 6 (2002 - Present) Fault Guide

View Mazda 6 (2002 - Present) Fault Guide

We know of 12 MAZDA 6 (2002 - Present) faults which our fault check guide makes it easy for you to spot and avoid.

  • 1 engine faults
  • 2 suspension wear items or faults
  • 3 interior problems
  • 1 bodywork issues
  • 5 recalls

Here's an example fault on the MAZDA 6 (2002 - Present)

What to look for:

Diesel Engines Only. Check the paperwork to see if the cam belt has been changed on schedule. On most diesel engines the cam belt must be changed within 5 years or 75,000 miles.

What it means:

If the cam belt and associated parts (such as water pump and tensioner) have not been changed, and the mileage is over these boundaries, the cam belt is likely to fail soon. Usually the engine has to be replaced or at least re-built after a cam belt failure.

What to do

Ensure that the cam belt is changed before the car is driven anywhere if it is coming close to its interval. Changing the belt will cost £350.


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Mazda 6 (2008-) Fault Guide

View Mazda 6 (2008-) Fault Guide

We know of 12 MAZDA 6 (2008-) faults which our fault check guide makes it easy for you to spot and avoid.

  • 4 engine faults
  • 2 suspension wear items or faults
  • 3 interior problems
  • 2 bodywork issues
  • 1 recalls

Here's an example fault on the MAZDA 6 (2008-)

What to look for:

Check that the DPF (Diesel Particulate Filter) warning light on the dash comes on with the ignition and goes off after a few seconds. Make sure the DPF warning light is not flashing when the engine is running. Check that the engine management warning light is not on. Also, check the service history to make sure that the oil used in the servicing has been either ‘Low Ash’ or ‘DPF’ oil – these are the only oils that enable the engine to run correctly.

What it means:

The DPF is there to remove harmful particulates from the exhaust when the car is running. The DPF is not really suited to small runs and town driving/school runs in particular as the filter does not get hot enough to burn the particulates off and it gets clogged up. Running the car at 2500 rpm for 5/10 miles in 4th gear should allow the DPF to get hot enough to burn off the particulates clogged up inside. If doing this does not cause the DPF warning light to go out then the DPF will need to be manually cleaned out by a main dealer. If the DPF is flashing then the car must be taken straight away to a dealer.

What to do

If the DPF warning light or engine management warning light comes or flashes on (or the car goes into Limp Home mode) then have car inspected by a qualified mechanic. If the DPF light is continually on then it will cost around £200.00 to have the DPF manually re-generated by a dealer. If the DPF light is flashing then the DPF may need to be replaced. This can cost up to £2000.00.


Register to have full access to the MAZDA 6 (2008-) fault guide.

Registered users also get access to our regional price guides, cars for sale email alerts, and many other benefits to help you buy a safe, reliable used car at a great price.


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