MAZDA 6 MPS problems you have had, warranty fixes

[Swallowtail]

Originally Posted by EQ:

I thought it was about time we had a (stickied) thread on MPS6 issues/fixes. I'll get the ball rolling:

If you could post the problem item, symptom and action taken to resolve that would be great!
Eg. Gearbox "wong wong" noise -> (Penrite SYN 75W-90)

As things are posted ill add them to this first post, or mods add things straight in this first post so we can keep track of them all.
obviously not every car will have same issues.

Please keep your posts on topic and technically orientated as this is a great resource for warranty claims/troubleshooting.
If you need further help with a problem noted here or a new issue please post in an existing thread or create a new one.


Problems/Resolutions
* Replaced clutch / flywheel
* Replaced sat nav screen twice
* Replaced diff
* Faulty O2 sensor (not yet replaced)
* Sagging engine mount (not yet replaced)
* Leaking water pump (not yet replaced)
* Small oil leak from transfer casing (not yet fixed)
* Broken rear suspension bolt
* Rear Sway (banging/squeaking) -> Tightened
* Hesitation and rough response off boost -> Wastegate solenoid replaced


1. Turbo replaced due to failed seals at 32,000ks
2. Rear diff replaced at 34,000ks, whined from 12,000ks
3. Transfer (PTO) case leak. Resealed at 34,000Ks
4. Transfer case re-sealed again at 35,000ks
5. Oil sump leak at 35,000ks
6. Vibrations at idle and underway, Drivers side engine mount replaced at 35,000ks
7. Wheel allignment, tyre wear and wheel wander....on going - possible fix from Falcrum suspensions once everything else is done

This sucks...but I love the car...for now

From Swallowtail:

6MPS repairs under warranty:

Replaced clutch / flywheel
Replaced sat nav screen twice
Replaced diff
Faulty O2 sensor (not yet replaced)
Sagging engine mount (not yet replaced)
Leaking water pump (not yet replaced)
Small oil leak from transfer casing (not yet fixed)
Broken rear suspension bolt

If I think of any others I'll post them up ...


My clutch was done as part of a Service Bulletin - they made several major changes to the clutches in the 6MPS after the original ones were nigh on impossible to use for most buyers. The change was free if you knew to ask for it... Took them 2 days. Apparently you have to just about dismantle the entire car to get the clutch / flywheel out on the awd 6...

[Swallowtail]

Got mine back Friday from getting the warranty work done (engine mount, O2 sensor, transfer casing oil leak, water pump leak).

Those things are all fixed... but the car now has an engine compartment exhaust leak (fills the passenger compartment with fumes and it sounds like a truck), the alarm no longer works, the radio has been scratched, and my phone mount has been broken.

I sent an email to the Service Manager yesterday, and he was on my phone this morning at 7.45am... .

Fun fun fun...

[Swallowtail]

Well, today is day 16 of my car being in the service shop. So far plugs, coils, o2 sensors, fuel pump, injectors have been replaced, and a heap of other stuff has been done apparently. Result - it's still there, it's still not fixed, and at the moment no-one has any idea what is wrong with it. They have been talking to Mazda Japan, logging heaps, and comparing with another MPS6 that they have onsite, and I honestly don't think they have any idea quite what to do next.

At least I have wheels in the form of a loan car, but it's not a 6 MPS...

[Swallowtail]

The car has hesitation and rough response off-boost. They recognise that there is an issue which was a battle in itself, but have no idea why it's doing it.

Who knows...

[shakespeare]

Geez Swallowtail, that's been going on for ages, when do you trade your beast in? FYI I've had the occassional hesitation mainly in 3rd WOT, it's rare but does occur, not often enough for me to pursue it though.

[Swallowtail]

Hmmmm... apparently they are now replacing the ECU.. :-O

[Jmac]

Hmmmm... apparently they are now replacing the ECU.. :-O

Ouch, Hope its sorted soon..
Let us know how you go!

[Swallowtail]

Update - in addition to the long list of parts already tried, they have now replaced the ECU, the blow-off valve, and the exhaust system. Result - still the same!!!

Apparently they are now in discussions with Mazda Japan as to what to do next... .

[Swallowtail]

Well they continue to make guesses as to what may be the issue. EGR solenoid has made no difference, and they are still saying that they are 'working on it'.

They still have no clue as to what is causing the problem. And they are completely unable to give me any idea as to whether they are going to be able to resolve it at all, or how long it may take, or what they will do if they can't fix it, or how they are going to reimburse me for out of pocket expenses or lease costs, or what they are going to do given that I have to sell the car by June.

Mazda Australia Customer Service are involved too, but all I have had from them is a continuation of the "we're working on it" and "we want it fixed as soon as we can" line.

The car has now been "vehicle off road"" (VOR apparently they call it) for almost a month, in addition to the previous times when they have tried to fix it and failed.

What do I do next?!?!?!?!

[Swallowtail]

It's fixed....

Picked it up yesterday after nearly 5 weeks in the workshop. The issue? Wastegate solenoid.

Only problems - the new sat nav screen is busted, my bluetooth doesn't work any more, and my ipod adapter has been disconnected and the cable jammed in between the stereo and its mounting bracket, so I can't get the cable out to plug it back in.

So it's going back in next week for another week or two for them to sort out those issues, give it a roadworthy, put new tyres on it, and then it's up for sale...

Half of it's been replaced, so almost like new... .