2018 Mazda CX-5

Touch Screen and/or infotainment center causing ghost touch. Available for inspection. Ghost touch (known Mazda issue) with touch screen has been changing radio stations, increasing volume to max. Will go into user settings and change guidance voice to full volume, increasing bass to full volume, fast forward songs, mute phone call feature, randomly switch from bluetooth to handset of phone. All of this is done without the driver or anyone else in the car touching anything. When this happens there is no easy fix. I cannot just stop the song, mute the volume. We have to wait for it to decide to stop and fix itself. It is a safety issue because You are driving and randomly volume goes to full blast an startles you, cannot hear what is going on around you, and hurts your ears. This is distracting and I have swerved my car because of it. Bluetooth capability is suppose to be handsfree, so if it keeps muting my call or switching to my phone, that is now a safety hazard as well. vehicle was inspected in 2021 by Mazda dealership. At that time they said the only thing they can do it remove the SIM card, and we would lose navigation. However the issue did not stop. It would cost us about $1000+ between labor and parts and inspection to get this fixed. It was addressed again in 2023 and 2025. 2025, when the infotainment system had a class action law suit but ours wouldn't be covered because its the touch screen and not the computer. No warning systems.

I took my car to the dealership because it was leaking oil and coolant. Upon verification, I was informed that my vehicle had a cracked cylinder head. They told me that the repaired will cost me $5500. Unfortunately this is an amount that I do not have. So I reached out to the Mazda Corporate and they told me that there is no repair assistance can be provided and that I should reach out to Mazda Dealership and see if they may accept to put the cost of the repair towards the Good Will Repair. Unfortunately I haven’t been successful with that either. My Mazda Corporate case number is 00450563. This issue is created safety issue with burning engine oils and fume entering the vehicle. This is well known issue with this car model and unfortunately Mazda has made a recall on any of them. While I understand that this may cause Mazda Millions if a recall is put out, it will great to assist with the ones experiencing this issue. Any assistance regarding this matter will be truly appreciated.

Like many other complaints. My 2018 Mazda cx5 GT is having the same issue with the cracked cylinder head. I only have about 36-38k mileage on it ( I forgot the exact). Mazda dealership will not cover the cost. NEVER had an accident to the front and only one accident to the back when I got rear ended in 2019. If this is a wide spread issue, why is this not a recall? and why is it only the turbo engine gets extended warranty? The repair cost right now approximately $9,500. I never do any maintenance at Mazda so I doubt they will give me the good will assistance but I am still waiting for an answer. I hope NHSTA will do something because this issue will continue with all other owners that have the same year model.

We purchased this vehicle used from Mazda of Orange in July 2025 with 52,399 miles on it. After 6 months of ownership and approximately 3,000 miles there was a burning smell. We took it to our local mechanic and the following repairs were required: Replacement of cracked belts, Replacement of cracked axle boots, Replacement of an excessively loose front axle, Replacement of valve cover gasket. Cost was $3,000 and the dealer refused to reimburse us. Now the car is leaking oil and needs a new head gasket and cylinder head surface machined. Quote was approximately $3,500. We have requested Mazda perform this repair. Will you please look into these vehicles? These are significant defects on a car with such low miles. We also believe that some of these defects were know to the dealer but are unable to prove it. We believe our vehicle is part of a batch that has signficant mechanical defects. Current mileage of the vehicle is 56,865.

My 2018 CX5 just hit 50,000 miles recently and I smelled something burning and saw smoke coming from the hood while I was stopped for a school bus. I immediately stopped driving due to fire concerns. The vehicle has a cracked cylinder which is a known issue for this vehicle. Mazda has no plans to correct this issue other than issuing a technical bulletin. I feel that Mazda should repair this at their cost because it is a defect and the vehicle only has 50,000 miles. Instead I have to pay nearly $5,000. This is hard to believe! Transcript from dealer: The technician reported an oil leak from the cylinder head, specifically indicating a crack in the number four lifter valley that is causing fluid to leak down the engine block. This issue is recognized as a known problem, and the technician will check if it is covered under warranty. Repairing the cylinder head will require significant labor, including dropping the engine, and will take some time to complete. Services being performed: - Oil change. - Inspection for oil leak issue. Recommendations: - Replacement of the cylinder head due to the identified oil leak. Multi Point Inspection $4870.22

Sunroof blew out while driving down interstate highway. There was no impact that we are aware of, just a complete failure of the sunroof glass. The sunroof was closed, with the shade also closed, so no glass fell down into the vehicle. The glass blew out with a very loud explosion that startled and disoriented all within the vehicle causing us to swerve and look around for what had happened. The glass has been inspected and is being repaired by a local auto glass shop today. No warning lamps or otherwise. I have pictures of the glass if needed.

Unintended acceleration incident. I entered the parking lot of a business where the Salvation Army is located to drop off a donation. The parking spaces were on the left side. As I pulled into a parking space and was in the process of parking, the vehicle suddenly lurched/accelerated forward unexpectedly and struck the concrete wall of the building. The airbags did not deploy despite the frontal impact. No one was seriously injured, but my husband, daughter, and I experienced soreness the following day from the impact. Thankfully, I had chosen a parking space in front of a concrete wall rather than the glass storefront windows, which could have resulted in far more serious injuries or damage. I contacted my insurance company, and the vehicle has since been repaired.

I received notice from Mazda about a recall on the infotainment system. The notice required me to provide as much proof of claim as possible. I provided proof from the dealership where the system was replaced. I was within filing time guidelines. Mazda administrator sent notice that my claim was denied with no reason as to why. Claim # XXX VIN [XXX] I am requesting the full amount of parts and labor that I spent for the replacement of the infotainment system. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

another case of a 2018 cx-5 cracked cylinder head. 70k miles and regularly maintienced. no warning other than oil showing on the ground. took it in to mazda dealership and they came back after looking at it and declared it was a cracked cylinder head priced at 6.8k. after looking it up it appears to be a casting issue that has affected many mazdas but mazda corp. will not take fault.

My 2018 Mazda CX five experience catastrophic engine failure at approximately 119,000 miles despite proper maintenance. The failure resulted in a repair estimate exceeding $9500. This type of failure raises concerns regarding potential engine defects or premature mechanical breakdown. Mazda acknowledged the issue by offering a minimal Goodwill payments, but refused meaningful assistance. I am reporting the issue to determine whether similar failures are occurring with Mazda and further investigation is warranted.