2017 Mazda CX-5

My 2017 Mazda CX-5 has experienced a recurring condition more than six times involving sudden jerking, rapid deceleration, and loss of normal accelerator response during extended highway driving, often while cruise control is engaged. On multiple occasions the engine has also shut down. On 09/11/2026, while traveling south on I-35 at approximately 80 mph with cruise control engaged, the vehicle suddenly began jerking violently and rapidly losing speed. Normal accelerator response was lost and a vehicle behind me nearly struck my vehicle. I was able to reach the shoulder just before the engine shut down. The vehicle would not restart and required towing. There was little or no meaningful warning before the loss of power. The vehicle was inspected by a Mazda dealer. I specifically reported the recurring highway jerking, deceleration, loss of throttle response, and shutdown concern. An aftermarket OBD-II device was removed after the dealer identified parasitic battery draw. The dealer subsequently stated in writing that the battery and alternator were healthy and that the vehicle was “operating as intended.” On 10/09/2026, with that device no longer installed, the same symptoms occurred again during highway travel and the vehicle again became disabled and required towing. The Mazda dealer has now verified the drivability concern and reported a Fuel Rail Pressure Sensor “A” Circuit Low fault and low fuel pressure. The dealer is recommending replacement of the high-pressure fuel pump as an initial repair, followed by further testing of the in-tank fuel pump. The vehicle is currently available for inspection at the Mazda dealer. NHTSA’s VIN lookup currently shows 0 unrepaired recalls. I am reporting this because sudden loss of acceleration and power at highway speed creates a serious collision and roadside safety risk.

NHTSA ID

11770671

Incident

Sep 11, 2026

My car started to smell like gas. I brought it to a shop and there was a leak in my high pressure pump in which the gas was leaking on to my engine. I paid $1600 to have this replaced and there is only 88,000 miles on the car.

NHTSA ID

11769737

Incident

Oct 7, 2026

The radio is uncontrollable by driver. The radio the self dial from Bluetooth. Even if not connected, the radio surprises this driver by playing the radio unexpectedly at the highest rate. Due to the buttons not working, driver cannot turn down the radio causing safety concerns for being scared and distracted. There are no warnings. Mazda is unwilling to assess without pay.

NHTSA ID

11747415

Incident

Jun 30, 2026

There is a consistent issue with the “ghost touch“ and the electrical system so when you’re going down the road, the musical will change. The music will blast up or down randomly it’ll get stuck and it’s very distracting. It will hang up on people while you’re having a conversation through the car phone. This was a recall for Mazda 2014 through 2016 and they need to extend it because it was still happening with my 2017. This is my first experience with Mazda and it has not been a good one as far as this goes. I do a lot of driving and phone calls and music are very important and stuff randomly changing or getting stuck while you’re driving and then trying to fix it is very dangerous.

NHTSA ID

11746990

Incident

May 15, 2026

Infotainment system randomly makes its own selections. Turns volume up and down, changes settings, changes stations... etc. Anything that can be controlled on the screen is at risk of being randomly hijacked. Once, my drivers assist volume was unexpectedly turned to full blast and randomly shouted "navigation assistant will be at this volume. " I jumped so badly I actually could have crashed if I hadn't been at a light.

NHTSA ID

11741077

Incident

Jan 1, 2024

The contact owns a 2017 Mazda CX-5. While driving the vehicle, the engine overheat warning suddenly illuminated on the dashboard cluster panel. The contact pulled over immediately, restarted the engine, and coasted the vehicle to a local, independent mechanic shop. The independent mechanic diagnosed the issue as a blown head gasket. For a secondary inspection, the vehicle was transported to an authorized Mazda dealership. Dealership technicians determined that the engine cylinder was actually cracked and recommended a full engine replacement. The vehicle was not repaired. The manufacturer was notified of the failure. The failure mileage was 92,000.

NHTSA ID

11739578

Incident

May 8, 2026

Mileage

92,000 mi

Last week, the airbag warning light illuminated on my dashboard. Please be aware that this marks the fourth occurrence of this issue. Each time I bring the vehicle to the dealership, they provide a different explanation, and I am required to cover the repair costs. I have been informed that the vehicles were manufactured with a defect, causing the wiring harness to corrode at the junction where the temperature sensor connects to the engine, which measures the coolant temperature. Additionally, on two occasions, I was told that the wire had disconnected from the airbag connector. During my most recent visit to the dealership on 5/21/26, I was informed that an item in my glove compartment had dislodged the wire from the passenger side airbag module. This situation is extremely concerning, as it suggests that the wire can easily fall out or become loose from the airbag, given that there is no barrier between the glove compartment and the airbag. It is important to note that this issue arises each time I start the vehicle while it is stationary, and this vehicle has never been involved in an accident nor have the airbags been deployed.

NHTSA ID

11739407

Incident

May 15, 2026

My car only has 65k miles on it and the rear differential failed and needs to be replaced. I am seeing this posted online by many Mazda CX-5 owners well under the mileage this typically happenes but out of the warranty period. Mazda should start a recall or compensate owners for this. its never been in an accident simply a commuter car used around town

NHTSA ID

11724653

Incident

Mar 11, 2026

This bulletin supersedes the previously issued bulletin(s) listed below. The changes are noted below in Red. 09-038/24 08/08/24 NOTE: This service information is NOT applicable to 7th generation Mazda vehicles because the odometer data is stored in the BCM. DESCRIPTION In accordance with Federal regulations, follow the procedure listed below when replacing a speedometer. NOTE: Tampering with a motor vehicle odometer is strictly prohibited by Federal, and State laws. It is the dealer’s responsibility to comply with Federal, State, and local laws concerning odometer and related documentation requirements when providing a repair or replacement. Mazda vehicles are manufactured with tamper-proof speedometers.

DESCRIPTION If you encounter any type of electrical concern (e.g, dead battery, engine no start, DTC(s) stored...), interview the customer before proceeding with normal MGSS diagnosis by asking if any aftermarket devices have been installed. Aftermarket devices may be the cause of the electrical concern. Below are a few examples of unusual electrical concerns caused by aftermarket devices. Examples: 1. Devices connected to the DLC-2 (battery discharge/DTC stored) 2. Devices plugged into the 12V outlet 3. GPS tracking device (engine no start/battery discharge) 4. Dash cam (DTC stored) 5. Non-certified USB cable (Apple Carplay™/ Android Auto™ will not connect) 6. Over-sized wheels/tires (incorrect GPS location) 7. DTC C0023:14 8. Decorative trim and/or cover on the START/STOP ENGINE button

This bulletin supersedes the previously issued bulletin(s) listed below. The changes are noted in Red text. 01-012/22 10/06/22 DESCRIPTION Some vehicles may exhibit accumulation of dried coolant (1) around the water pipe (2). This is caused by a gap between the housing and pipe due to a press fitting during the manufacturing process. The accumulated coolant is solidified and plugs the gap in high temperature environment and the seepage is stopped and does not progress. This is normal and does not require a part replacement, clean off the dried coolant from around the pipe with a wire brush. REPAIR PROCEDURE 1. Verify the customer concern. 2. If the above condition is experienced, remove the accumulated coolant around the pipe (1) with a wire brush etc. NOTE: Perform the procedure on the vehicle. No need to remove the water pipe and hoses.

This SA supersedes the previously issued SA(s) listed below. The changes are noted in Red. SA-061/25 12/17/25 DESCRIPTION If you encounter any type of electrical concern (e.g, dead battery, engine no start, DTC(s) stored...), interview the customer before proceeding with normal MGSS diagnosis by asking if any aftermarket devices have been installed. Aftermarket devices may be the cause of the electrical concern. Below are a few examples of unusual electrical concerns caused by aftermarket devices. Examples: 1. Devices connected to the DLC-2 (battery discharge/DTC stored) 2. Devices plugged into the 12V outlet 3. GPS tracking device (engine no start/battery discharge) 4. Dash cam (DTC stored) 5. Non-certified USB cable (Apple Carplay™/ Android Auto™ will not connect) 6. Over-sized wheels/tires (incorrect GPS location) 7. DTC C0023:14 8. Decorative trim and/or cover on the START/STOP ENGINE button Example 1: Some electrical devices connected to the DLC-2 connector by insurance or mobile phone companies may cause: Battery discharge. The device may disrupt the CAN system battery saver mode. • IDS/MMDS will not communicate with the vehicle due to poor DLC-2 connection. The aftermarket device may cause DLC-2 female terminals to spread open.

This bulletin supersedes the previously issued bulletin(s) listed below. The changes are noted in Red. 01-008/23 06/05/23 Some vehicles may exhibit rattling noises from the engine compartment and oil leakage from the drive belt auto tensioner. This may be caused by insufficient sealing at the drive belt auto tensioner damper when the auto tensioner fully operates under both high ambient temperature and high load conditions. To eliminate this concern, the shape of the drive belt auto tensioner damper has been changed. REPAIR PROCEDURE If the tensioner is found to be "No Good" after completing the Drive Belt Auto Tensioner Inspection, replace it with a modified part according to the instructions on MGSS online:

DESCRIPTION Some vehicles may require the replacement of a damaged VIN plate or vehicle certification label. To obtain a replacement VIN plate (bulkhead-mounted and visible through the lower-left area of the windshield), contact DAG (Dealer Assistance Group) using VIN Plate Request Form available on One Mazda. To obtain a replacement vehicle certification label (located on the B􀀀pillar or front door), contact your assigned DSM (District Service Manager) to place the order. If DSM contact information is not available, refer to the Dealer & Field Contact Directory.