2021 Mazda CX-5

The contact owns a 2021 Mazda CX-5. The contact stated that while at a complete stop, the vehicle was rear-ended by another vehicle driving approximately 40 - 50 MPH. The contact stated that due to the crash, the driver's seat unexpectedly reclined, and the driver's head restraint detached and landed in the car seat in the rear seat. The contact also stated that the air bags failed to deploy during the crash. A Police report was filed. The contact was transported to a local emergency room and was treated for a fractured right fibula and whiplash. The vehicle was towed to a service center for an insurance claim and inspection. The contact was concerned that the air bags did not deploy and stated that the failure could have resulted in more catastrophic injuries. The failure mileage was approximately 50,000.

The contact owns a 2021 Mazda CX-5. The contact stated that while driving 50 MPH and the check engine warning light illuminated. The contact took the vehicle to an independent mechanic where an OBDII scanner discovered a misfire in cylinder#1. The vehicle was then taken to another independent mechanic where the OBDII scanner discovered a misfire in one of the engine cylinders and diagnosed the vehicle with an engine failure. The contact was then referred to the dealer who confirmed that there was a defect with cylinder#1. The dealer confirmed that the engine needed to be replaced. The manufacturer was then notified of the failure, and the contact was informed that there were no recalls on the vehicle and that the warranty had expired. The vehicle was taken to another independent mechanic and remained with the independent mechanic. The failure mileage was approximately 124,000.

Differential went and generated a cascading chain reaction destroying the coupler and breather and axles. Car is undrivable. This. Defect has a TSB

2021 Mazda CX-5 2.5L non-turbo. While driving at approximately 8 mph, I removed my foot from the accelerator, but the vehicle unexpectedly accelerated on its own. I did not press the accelerator pedal. I had to apply the brake to slow the vehicle down. This issue has occurred three separate times, on August 25, September 4, and September 18, 2026, at approximately 70,060 miles. The same unintended acceleration behavior occurred during all three incidents.

Twice while making left turns from a stop into faster cross traffic, the accelerator was pressed but the vehicle barely moved (coasting) for roughly 2 - 3 seconds, then suddenly accelerated normally, creating a near-collision risk as cross traffic quickly approached. No warning lights were observed on the dash.

My CX-5 has 25,000 miles and recently the a/c failed culminating in a distinct chemical smell in the cabin. The issue was identified as a leaking/failed evaporator which apparently is located behind the dashboard and in turn “dump” the leaking refrigerant into the cabin! The total cost of repair due to the location of the evaporator is between $3000-$4500 in my area, seems a high cost to be poisoned by a vehicle that only has 25,000 miles on the clock!

My 2021 Mazda CX-5 has developed a persistent rattling/vibration noise from the A-pillar and upper corner of the windshield. The noise appears to originate from the windshield/A-pillar attachment area and may be related to improper adhesion, mounting, weatherstripping, or other components near the top of the windshield. I have found numerous similar owner reports involving Mazda CX-5 and other fourth-generation Mazda models describing rattling, clicking, or vibration from the same windshield/A-pillar area. Because this issue appears to affect a significant number of vehicles, I believe NHTSA should investigate whether there is a common manufacturing or assembly defect and determine whether a manufacturer repair campaign or recall is warranted.

While driving in the Interstate, a truck swerved towards my lane; I swerved into the next lane to avoid the truck hitting me and when I began to swerve my Lane Departure warning malfunctioned and caused my car to completely shut down. I immediately put my hazard lights on to hopefully avoid being hit; but, a car behind plowed right into my rear end. The police were onsite at the accident. My vehicle has been inspected by an independent service center and my insurance representative.

I was sitting at a traffic light with my foot on the brake waiting to turn left onto Lee Highway from Fairfax County Parkway. Car jerked forward TWO times in a row, both times hitting the car in front of me. Our lane was at a dead stop waiting for the left hand arrow. The cars to the right of us had the green and were moving forward. I felt like I had no control over the car during this time.

The vehicle developed an engine oil leak from the timing cover due to what appears to be premature seal failure. Engine oil was leaking externally and could drip onto hot engine components, creating a potential fire hazard while the vehicle is in operation. The leak also increases the risk of low engine oil levels, which could lead to engine damage or sudden engine failure if not detected in time. This issue required an expensive repair despite the vehicle being properly maintained. I have since learned that many other Mazda owners have reported similar timing cover oil leaks on this engine, suggesting this may be a widespread defect rather than normal wear and tear. I am submitting this complaint so NHTSA can evaluate whether this represents a safety-related defect that warrants further investigation.

The vehicle's Connectivity Master Unit (CMU) suffers from a severe, persistent electronic hardware malfunction that causes the central information display and dashboard telemetry to blink, cycle, and drop signals erratically. This specific hardware architecture failure threatens to corrupt data transmission lines directly connected to the Advanced Driver Assistance System (ADAS), creating an imminent safety risk of unintended automatic emergency braking or false sensor deployment during highway transit. The vehicle utilizes the exact same defective CMU hardware component that the manufacturer has acknowledged and recalled on other model cohorts; however, the manufacturer has explicitly excluded this specific VIN from safety recall eligibility. Diagnostic attempts by the authorized dealer network relied solely on forcing digital software updates that completely failed to correct the core hardware signaling instability, leaving the vehicle un-repaired and presenting an active, unmitigated electrical and safety hazard on public roads.

The contact owns a 2021 Mazda CX-5. The contact stated that while driving 70 MPH on the interstate and changing lanes, the blind spot warning light was inoperable. The contact stated that the blind spot indicator then became operable. An independent mechanic was notified of the failure and stated that the repair was not covered. The local dealer was contacted, where a prior unknown diagnostic test was completed; however, the blind spot failure had not been addressed. The vehicle was not repaired. The manufacturer was not contacted. The failure mileage was approximately 95,000.

2021 Mazda CX‑5 (VIN: [XXX] ). First low‑oil warning at 17,800 miles. ([XXX]) Mazda dealership in La Crosse, WI performed an oil change and fully refilled the oil. Second low‑oil warning at 18,700 miles — only 900 miles later. ([XXX]) This indicates rapid, abnormal oil loss consistent with the known valve‑stem‑seal defect for this model year. Sudden low‑oil conditions pose a safety risk due to potential engine damage or failure. Requesting NHTSA document this issue. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

My 2021 Mazda CX‑5 is experiencing excessive oil consumption. The vehicle is burning oil between regular oil changes, and the oil level drops noticeably before the recommended service interval. I have noticed a burning smell and/or signs of oil loss without visible leaks. This raises concerns about potential engine damage, stalling, or fire risk while driving. The issue has occurred repeatedly and does not seem normal for a vehicle of this age and mileage. I am filing this complaint because this may indicate a defect affecting engine safety and reliability.

2021 Mazda CX5 AWD- Non Turbo Engine. Sunny Day, Dry. My Car was clean. No Precipitation. Some shadows of the interstate light poles across the road 200-300 feet in front of me, but they were thin shadows. Sun Was to my Left. I was driving South on May 01 2026 about 10am on the Interstate going Highway Speeds, with adaptive cruise control "on", in the 2nd lane of a 4 lane interstate. Thankfully no other traffic ahead or behind me. Car slammed on the brakes suddenly, pretty hard. I counteracted and added more gas pedal to keep in going. I turned off the Cruise Control. After a while I re-engaged the Cruise Control and had no issues. This could have been a huge accident in busier traffic. Will get the car checked out at Mazda Dealership Service this week.

The car has 21000 miles and is driven lightly when applying the brakes the steering wheel started shaking and the car made noises - the brakes could have failed at any time and at any speedl The dealer said the rotors were warped. no warning and no notification from the manufacturer that this could happen at such low miles. i didnt bring the vehicle in because i could not believe the brakes would be at fault with such low miles - it started at 10000 miles. a notification from the manufacturer or dealers would prevent a catastrophic brake failure

Due to oil consumption issues & oil leak on 2021 Mazda cx 5 AWD I was told the timing cover and gasket needs replacement due to oil leakage. This appears to be a very common issue with this vehicle. The engine is at risk of catastrophic failure due to low oil levels

The contact owns a 2021 Mazda CX-5. The contact stated that while driving at an undisclosed speed, the Forward Collision Avoidance Automatic Emergency Brakes activated unintendedly, and the vehicle jerked to the left and independently accelerated and moved back in the lane intended lane. The vehicle then jerked to the right, unintendedly accelerated, and then went back into the intended lane. Then the vehicle resumed normal operation. While driving approximately 60-65 MPH a week later, the vehicle started jerking. The “Smart City Brake Malfunction” message was displayed, and the engine warning light was illuminated. The local dealer was not contacted. The vehicle was not diagnosed or repaired. The manufacturer was not notified of the failure. The failure mileage was approximately 114,000.

The contact owns a 2021 Mazda CX-5. The contact stated that while driving at an undisclosed speed, the low oil warning light illuminated. The vehicle was taken to the dealer however, the vehicle was not diagnosed or repaired. The contact was advised by the dealer to continue adding oil to the engine as needed. The manufacturer was made aware of the failure. The approximate failure mileage was 46,465.

The contact owns a 2021 Mazda CX-5 equipped with Firestone Tires, Tire Line: Destination LE3, Tire Size: 225/55/R19, DOT Numbers: 17XEFLE320725 and 17XEFLE321524. While the vehicle was parked, the contact was informed by a co-worker that there was a bubble on the rear passenger's side tire. The contact inspected the tire and noticed that there was a bubble that was two inches deep and 3 inches long on the side wall of the tire with DOT Number: 17XEFLE321524. The vehicle was taken to Tire Plus, where the tire was replaced. Additionally, the contact stated that while driving at 70 MPH, there was an abnormal popping sound heard, and the TPMS warning light illuminated. The contact was able to pull over to the side of the road. The vehicle was towed to the residence. The contact noticed that there was a 2-inch long crack in the tread of the rear driver's side tire, the tire with DOT Number: 17XEFLE320725. The tire was replaced with the spare tire. The vehicle was then taken to Tire Plus, where the contact was awaiting the tire replacement. The tires were replacement tires. The manufacturer was not notified of the failures. The tire failure mileage was approximately 15,000. The vehicle failure mileage was approximately 64,000. The VIN was not available.

Its been few months its giving me air bag issue sign in my car.

I was entering a traffic circle when i slid slightly as there was some ice on the roadway and came to rest against a curb, bumped lightly. There was no damage to the vehicle, but the entire driver side curtain airbags as well as the driver seat airbag deployed. The speed at which I was traveling was roughly 10 mph or less. My wheels never hit hard nor did they leave the pavement.

My Mazda 2021 infotainment screen goes goes out usually when hit a bump and stays out until it sits awhile. Which when this happens there is no backup camera which is a safety issue. The Mazda dealership said it was the screen which they wanted $2900 just for the screen so I got one off eBay and it's still doing the same thing. Which I think its the CMU

LOW ENGINE OIL LEVEL light on about 1000 miles from last oil changed. Dealer fixed the Mazda recall code: P250F on July 30, 2025. Now is same issue of LOW ENGINE OIL LEVEL light on again on November 19, 2025.

Radio audio randomly stopped working and you have to disconnect the negative or you have to leave the car off essentially all night. It’s definitely unknown issue there’s videos all over YouTube about it and there’s forms on read about it.

Important note for snowing conditions: The radar for adaptive cruise control is located in the front Mazda emblem. Snow buildup on the emblem can block the radar's signal and disable the adaptive cruise control system when driving. A heating element is necessary to prevent snow accumulation and maintain functionality.

We took our car to the Mazda dealership for routine maintenance. The technician found circumferential cracking along the sidewall/tread junction of all 4 tires. We were told that this suggests tread separation and that we should not continue to drive on the tires. We replaced all 4. I have pictures of all 4 tires.

The contact owns a 2021 Mazda CX-5. The contact stated that the Front Brake System Malfunction, Forward Brake Malfunction, and Check Engine warning lights were illuminated. The contact stated that while driving at various speeds, the vehicle started jerking and hesitating as if the wheels would lock up. The steering wheel vibrated while turning to the left or the right. The vehicle was taken to the dealer, who was able to retrieve a diagnostic code; however, the DTC number was unknown. The dealer was unable to identify the exact cause of the code. The vehicle was not repaired. The manufacturer was informed of the failure and opened a case. The failure mileage was approximately 81,000.

The contact owns a 2021 Mazda CX-5. The contact stated that while the vehicle was parked, the rear back glass fractured without impact. The contact stated that the vehicle had just been parked for several minutes prior to the failure when the contact returned from a doctor's appointment. The vehicle was not diagnosed or repaired by an independent mechanic or the dealer. The contact stated that the failure had occurred four times since June 2023. In addition, the contact stated that the rear seat was covered with shattered glass. The contact was instructed by the insurance company to contact the NHTSA Hotline to report the failure. The manufacturer was not made aware of the failure. The failure mileage was unknown.

The tires have lost tire pressure very often. The tires have gotten completely flat 2 times already and I’ve had to call my insurance. The tires are only 6 months old and have been flat 2nd already. 225/55R19 99V BSW ALL-SEASON TIRE

I was driving as normal and the passenger side airbags deployed with a cause. I was driving about 25mph. I didn’t hit anything; no event occurred that would have caused the air bag to deploy. I took the car to a dealer and they recorded the event log which showed a crash but the car clearly did not get into an accident.

The contact owns a 2021 Mazda CX-5. The contact stated that while driving approximately 50 MPH in an intense rainstorm, the windshield became foggy. The contact activated the HVAC system to clear the windshield, but only hot air was coming from the vents. The contact stated that the hot air made the foggy windshield worse. The contact used a towel to wipe the inside of the windshield. The contact had taken the vehicle to a local dealer; however, the failure was not duplicated. The vehicle was not repaired. The contact stated that the failure occurred during intense rainfall. The manufacturer was informed of the failure and referred the contact to the NHTSA Hotline to report the failure. The failure mileage was approximately 35,000.

The “trailing link shaft” broke/split/tore apart at the right rear wheel. my car only has 16,500 miles. the vehicle was inspected by auto manufacturing dealer (mazda). mazda refused to admit it’s realting to manufacturing defect(s). i did not report it to police or my auto insurance carrier at that moment because i did not know what the issues were not until i dropped it off to my local dealer

The carseat straps loosen on their own when in use. I buckle my son in correctly, chest clip correct, tightness of straps correct and throughout the drive the straps loosen until they are falling off his shoulders. His safety is at risk because if I drive with him and got into an accident he would potentially fly out due to the straps doing this. It has not been inspected but its available to be. I am not able to keep tightening the straps while driving. I have had to have a second passenger who can tighten them throughout the ride. I just purchased the seat a few weeks ago. I am not comfortable to use it at this time. When I noticed this was a repetitive issue I decided to message the company. When I upload documents this form wont send so I can send them via a different way of communication (email etc)

..... ON AT LEAST 5 SEPERATE OCCASIONS OUR 2021 MAZDA CX5 SUV ACCELERATED TO A HIGH RATE OF SPEED (ON IT'S OWN). IT HAS DONE IT TO MY WIFE AND I BOTH. I CONTACTED TWO DIFFERENT MAZDA SERVICE CENTERS AND WAS ADVISED THEY HAVE NO KNOWLEDGE OF THIS AND THAT THERE ARE NO OPEN RECALLS OR TSB's AND AS INTERMITTENT AS IT IS IT WOULD BE ALMOST IMPOSSIBLE TO DUPLICATE. ON JULY 18TH THE CAR ACCELERATED (ON ITS OWN) AGAIN BUT THIS TIME IT DROVE MY WIFE INTO A TREE AT APROX. 35/40 MPH BREAKING HER RIBS. THE BODY SHOP INFORMED ME THIS MORNING THAT THE CAR IS A TOTAL LOSS. MAZDA NEEDS TO GET TO THE BOTTOM OF THIS AND RESOLVE THIS ISSUE ASAP. THIS TIME IT WAS A TREE, THE NEXT TIME IT MAY BE AT A CROSSWALK OR AT AN INTERSECTION. IT'S JUST A MATER OF TIME UNTIL SOMEONE IS KILLED OR AT THE VERY LEAST BADLY HURT. I DON'T KNOW HOW MAZDA CAN BE UNAWARE OF THIS PROBLEM, IT'S ALL OVER THE INTERNET. OUR BODY SHOP PULLED IT UP ON LINE AND WAS SHOCKED AT THE AMOUNT OF COMPLAINTS/ CONCERNS THAT EXISTED RELATED TO THIS PROBLEM. PLEASE INVESTIGATE THIS BECAUSE THE NEXT PERSON MAY NOT BE AS FORTUNATE. THANK YOU IN ADVANCE.

Infotainment system went dark and I cannot get it to come back on. I’ve read that this has been an ongoing issue and is covered in Mazda cx5 models up to 2020 thru a class action lawsuit, but my one is a 2021 (manufactured we’ll before 2021 though) with a virtually identical system.

Monday I walked outside and my vehicles back windshield was broken. Oddly enough, there was a big hole on both ends, but the middle began to disintegrate. I got a new glass installed on Wednesday and Thursday morning. I went to get in my car and the new glass was broken. The tech told me that Honda had a recall for the defroster wires Having the same issue, causing the back windshield to break. Although I had not been running my defroster for several months, he said the wires were getting hot even though they were turned off and shattering the windows. Since this is the second windshield that has busted in a week, I assume that Mazda is having the same issue however they have not yet issued a recall.

No codes, dealer unable to duplicate. I have been hearing a lifter tick come and go for months (since February ) with my oil level up to par. The ticking gets louder and then quieter.

Car engine shut down and slowly came to a full stop on the highway on 1/4/25, putting myself and my daughter of being rear ended at full speed on a highway where the speed limit is 65mph. The steering wheel locked and I was unable to move the car to any shoulder. I put the car in park and pressed the start ignition button to start the car and was able to drive again. An appointment is scheduled for 1/17/25 for diagnostics at a Mazda dealership. There were no warning messages prior to this event.. My battery was replaced 2 weeks prior to this incident.

Check engine oil light came on after only 2K miles from last oil change. Upon inspection there was practically no oil in my engine!!! I see there is an ongoing issue since 10/21 with 2021 Mazda CX-5 turbo engines. Despite Mazda’s awareness of the problem, they have yet to issue a recall to fix this issue!!!

Engine developed a major oil leak at 70,000 miles, with multiple seals leaking. This appears to be a known defect with these vehicles and owners should not be bearing the cost for repairs.

The vehicle is low mileage (11,500 miles) and is burning an excessive amount of oil (up to a quart every 1,000 miles) The dealership is aware of this and just keeps saying to add oil.

I have a 2021 Mazda CX-5 touring with just a little under 26,000 miles. A couple of weeks ago, I started hearing an indescribable, quiet but noticeable sound on the passenger side of the vehicle that started at 15 mph. While attempting to get an appointment at two different booked up Mazda dealerships I noticed the sound getting worse and louder. I was able to get the vehicle into a local shop (not a dealership) close to my home. The technician there stated that my rear differential was leaking and needed to be replaced. He advised me not to drive the car because he said that I could lose total control of the vehicle. I was surprised to hear this as I was planning on picking up my son from school but also because my car has low miles on it. Luckily the repair was covered under my powertrain warranty but I felt the need to share with others. To me, this is a safety issue that Mazda owners should be aware of.

The outside mirrors failed to rotate open, and you could not see behind the vehicle. The mirrors rotate inward when the doors are locked and are supposed to open fully when the doors are unlocked. These outside mirrors can freeze when rotated in during freezing temperatures. When the vehicle is unlocked, the mirrors if frozen, can be kept from rotating out to the locked position. This condition causes the mirror motor assembly to fail and that prevents the mirrors from rotating to the outboard and locked position. Latter year models have an added option to turn the rotating feature off but no retrofit option was added to earlier model yesrs.

Just got a oil change. Told my battery is almost dead. Upon looking up information I found a letter for recall for 2021 Mazda Cx5 for Dealer Rework 41 telematics communication unit concern. I called the Dealership and they are refusing to fix the problem. Looks like its just a software update is needed. My car only has 24,666 miles and according to the letter should be fixed. [XXX] I bought the car used in April and did a search for recalls prior to buying the car. There is non on Mazda website or vin search. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

2021 Mazda CX-5. On 8/6/24, I turned right into a parking space between 2 parked vehicles at the DMV parking lot. I turned right and eased into the parking space facing a large Ford F 150 white pickup truck. I was approximately 1-1.5 feet from the front of the white truck. I had my foot on the brake, suddenly the vehicle accelerated by itself and I heard the car revving at a very high rpm and the car took off. My sister was a passenger and she heard it as well. None of the collision or brake notification avoidance features came on the screen or were implemented as a safety measure or accident prevention. I had my foot on the brake and I had no control over the vehicle. The car lurched forward hitting the right side near the headlight of the car on my left and the pickup that was in front of me. My car hit the white pickup so hard that it pushed it out of the parking space in front of me and perpendicular to the parked cars in the row. We both were injured, my sister in ICU and had to have emergency cervical surgery for fractures impinging her cervical spinal cord. The Mazda was totaled. It is impossible for a Mazda to push the Ford F 150 pickup truck, that was facing me , out of the parking space and perpendicular to the row of parked cars with just 12- 14 inches between the pickup truck and my vehicle unless it was revved up to a very high rpm. The police report has some inaccuracies, it states I was turning left into the space but was actually turning right and says I possi

Oil has been leaking multiple times, with warranty repair for a faulty timing cover and gasket. This is now leaking again after being repaired twice already. This most recent time causing error messages regarding oil while driving. Significant burning smell coming from engine area.

Will driving on the interstate, using the adaptive cruise control feature, vehicles were slowing down to a stop ahead and my car accelerated instead of slowing down. I then pressed the brake and simultaneously, the car breaks locked down (automatic braking). Unfortunately I wasn’t able to avoid an accident as I rear ended the vehicle in front of me. My vehicle has been turned over to the insurance company to assess damage. I’m sure it can be inspected by nhtsa. Mine and others safety were at risk due to the malfunction of the cruise control accelerating instead of stopping. It caused an accident. Luckily no one was extremely injured. I have neck and back pain from the collision that will hopefully heal in a few days. Time will tell. But this could have been much worse had I not reacted as quickly as I did. This could cause a fatal accident. The care isn’t drivable so it has not been reproduced by anyone. I have notified the insurance company about the issue and It is my hope that they will inspect this. There were no warning lights or messages displayed prior to the incident.

For the third time in 3 years we have had to had the timing cover and gasket replaced due to major oil leakage. This appears to be a very common issue with this car, and even after getting it “fixed” the first time it is leaking again.

Low engine oil light 3600 miles before next oil change