Coolant leak into cylinder head, resulting in overheating and blown head gasket. Repair cost was $7k to resurface cylinder head and replace gasket. Repair did not fix issue, likely due to unseen cracks or warping to cylinder head. Will require rework, likely entire engine replacement, as the defect cannot be corrected.
2018 Mazda CX-9 transmission complaints
Page 2 of 2: complaints 11 to 13 of 13, newest first, as owners wrote them.
This weekend Mazda CX-9 started leaking coolant from the firewall side.
the cars engine makes loud rattling noise and slips gear. the vecicle jerks hard and feels as if transmission is slipping. car hesitates when i shift into gear, followed by a jerking and jolting into gear. my brakes are replaced frequently. mazda at 65643 miles on car found excess operating noise coming from engine coolant/water pump due to internal bearing failing. they replaced the water pump. software (pyd8-18881-f) replaced. the vehicle has 74000 miles and has same problem. when stopped at a traffic signal it lunges forward at times. and shifts slow to fast gears. this problem is not resolved. the first time it was allegidely fixed was 22Dec2021 it is now 05Oct 2022
VIN decoder
See the problems and recalls for an exact car
Buying a used 2018 Mazda CX-9?
Check the exact car before you pay: accidents, salvage or flood titles, odometer readings and previous owners.
Check its history