Hi All,
Unfortunately I too have a blown head gasket on my 2013 diesel CX-5. Local mechanic who is servicing my car notice the coolant tank was near empty and coolant sprayed all over the engine bay. When the coolant tank is refilled up, we can see bubbling in the reservoir/
Further investigation and a chemical test later shows combustion gas in the coolant reservoir. There was no warning whatsoever on the dash and only reason we found out was that the car was due for its regular service.
Now Mazda is asking I take the car in for an investigation which will cost $250. It will be covered if job is under warranty.
To my fellow Cx-5 owner who had an issue, please do you mind sharing more information on how you secure a warranty claim/fix for this. Any information would be much appreciated.