2026 Mazda CX-70

The vehicle exhibits a severe, intermittent driving hazard, specifically engine stuttering, sluggishness, hesitation, and sudden power loss while actively operating on public roads at highway speeds. This malfunction creates an immediate safety risk of a rear-end collision by causing the vehicle to unexpectedly lose momentum in moving traffic. The manufacturer’s corporate escalation department subsequently acknowledged the potential safety risks and advised against operating the vehicle due to these unresolved mechanical issues. While an authorized dealership has now temporarily provided a standard loaner vehicle while in possession of the car, the service center stated they could not replicate the intermittent engine defect and refused or delayed performing necessary safety repairs, claiming no error codes were actively stored. Meanwhile, the manufacturer's corporate legal department has completely failed to communicate for two solid weeks, maintaining complete radio silence and failing to provide any formal communication or resolution regarding the underlying breach of warranty and the safety deadlock on my vehicle.

NHTSA ID

11772505

Incident

Sep 23, 2026

Phantom Blind Spot Monitoring occurred while driving 70-73mph. Right driver side blind spot turns on for almost 5 minutes with no other vehicles around. Switching lanes causes lane departure warning system to activate.

NHTSA ID

11754344

Incident

Aug 2, 2026

Blind Spot Monitor detecting phantom objects at highway speeds with no other vehicles around. Speeds between 69-75mph. Right Passenger side blind spot light turns for up to 20 seconds, turns off, then turns on again.

NHTSA ID

11751437

Incident

Jul 12, 2026

While driving, the panoramic sunroof suddenly exploded outward without any impact from road debris or another object. The glass shattered unexpectedly, creating a safety hazard from falling glass and the sudden loud noise. I believe the failure may have been caused by pressure inside the cabin or a defect in the sunroof glass or its installation. There were no visible signs that the vehicle struck anything before the glass shattered.

NHTSA ID

11748318

Incident

Jul 2, 2026

This bulletin supersedes the previously issued bulletin(s) listed below. The changes are noted in Red. 02-003/26 09/04/26 and 06/24/26 Some vehicles have reported faster than expected tire wear for vehicles equipped with OEM "Falken 275/45/21" tires, without outside influence such as low tire pressure or out of specification alignment, and the tire life may not meet customer expectations. To eliminate this concern, the tire contact patch pressure has been optimized. REPAIR PROCEDURE Verify the customer concern (inspect the tires, verify tread depth, and replace all the tires as required on the vehicle according to the following "Inspection Requirements" and the instructions in MGSS (WHEEL AND TIRE REMOVAL/INSTALLATION). Mazda Warranty is providing case by case goodwill processing information regarding tire wear complaints on CX-90, and CX-70 vehicles equipped with OEM 21” 275/45/21 Falken tires. This goodwill assistance process does not include any other tire brand or size.

For vehicles equipped with the Accessory Tow Brake Controller (P/N: C9N1V7782A), the 12V battery may become discharged due to high parasitic current if the vehicle is left unused for an extended period, regardless of whether a trailer is connected or not. This may be caused by power supply to the controller continuing after the ignition is turned OFF due to inadequate software in the Tow Brake Controller. 5. Replace the accessory with the improved part (suffix "B"), and verify that the parasitic current is 65 mA or less. NOTE: For accessory installation procedures, refer to INSTALLATION INSTRUCTIONS in attached.

Subject: Update – Campaign Warranty Claim Response Enhancements – Modules Not Repaired for Certain Campaigns Dear Mazda Dealer Colleagues, On October 28, 2026, a change was implemented in the warranty claim response screen to provide precise information for all campaigns requiring module programming or module replacement subject to the LECS system software checks. As previously announced, some claims were automatically rejected with the Edit code JN1 – One or More Modules Are Not Updated when submitting a campaign warranty claim. This response was based on the session file received from MDARS or MDARS II at the dealership and the VIN on the claim submitted. This change provides additional Related Information which enhances the edit code information. This information allows the dealer to correct the error without contacting Warranty or Hotline. Edit code JN1 now contains the actual module name and the software version that was collected from the car and what the minimum required software needed to be for the claim. Using this information, the technician can now identify the exact error or errors and correct the concern.

This bulletin supersedes the previously issued bulletin(s) listed below. The changes are noted in Red. 02-001/26 04/29/26 Some customers may complain that an abnormal noise is heard from the front suspension when driving on rough road surfaces or when passing over speed bumps. This is caused by insufficient heat resistance of the bushing material under specific operating conditions, resulting in cracking and fluid leakage in the front lower arm bushing. To eliminate this concern: The bushing material has been changed to a heat-resistant material. The bushing shape has been modified to reduce deformation. The damping characteristics of the front lower arm bushing have been modified. REPAIR PROCEDURE 1. Verify the customer concern. If noise is detected, replace the front lower arm (rear side) according to the instructions in MGSS. CX-90 (FRONT LOWER ARM REMOVAL/INSTALLATION) CX-70 (FRONT LOWER ARM REMOVAL/INSTALLATION) If NO noise is detected, this TSB is NOT applicable. NOTE: Perform repairs on the affected side only.

CSP14 – 2024-2026 CX-90 Subject: Mazda Rear Brake Pad Customer Service Program Limited Warranty Extension – (CSP14 – CX-90 models) - Phase 1 Mailing – May 2026 In late April we announced two Customer Service Programs (CSP14 & CSP15) where certain vehicles are covered under these two Limited Warranty Extensions, (defined as “Covered Vehicle”); 2024-2026 CX-90 (CSP14) and 2025-2026 CX-70 (CSP15) produced November 18, 2025 and prior. Owner Notification: We are pleased to announce the first phase of Owner Letters will mail on May 29, 2026, to approximately 18,000 owners in campaign CSP14. As stated in our prior communication, we will send subsequent dealer emails with future phased mailings planned throughout Summer 2026. We have also released the Repair Procedure under TSB 04-003/26, the Parts & Warranty information and updated all dealer-facing FAQ documents. ATTENTION ALL DEALERS - Vehicles to be repaired: Due to limited parts supply only the vehicles in this notice can be repaired. To help your Mazda dealer staff identify which vehicles can be repaired we have created an Excel-based VIN look-up tool in Mazda Global Service Support (MGSS) under this campaign. Please enter the VIN in the tool if the customer does not have their parts available letter to confirm the vehicle can be repaired under this CSP. At this time, remaining customers in CSP14 and CSP15 must wait to receive notice that parts are available. Key Benefits of the Customer Service Program-Extended Warranty Coverage for Rear Brake Squeal: Mazda is expanding the standard brake pad coverage from 1-year/12,000 miles to 3-years/36,000 miles to cover repairs related to rear brake squeal. The owner is eligible for a one‑time replacement of redesigned rear brake pads at no cost if the brake squeal symptom matches a Technical Service Bulletin (TSB) which will be published prior to sending the Second notification. The redesigned brake pads will be covered under the vehicle’s original 3-year/36,000-mile warranty, or 1 year/12,000 miles from installation whichever provides longer coverage.

CSP14 – 2024-2026 CX-90 Subject: Mazda Rear Brake Pad Customer Service Program Limited Warranty Extension – (CSP14 – CX-90 models) - Phase 1 Mailing – May 2026 In late April we announced two Customer Service Programs (CSP14 & CSP15) where certain vehicles are covered under these two Limited Warranty Extensions, (defined as “Covered Vehicle”); 2024-2026 CX-90 (CSP14) and 2025-2026 CX-70 (CSP15) produced November 18, 2025 and prior. Owner Notification: We are pleased to announce the first phase of Owner Letters will mail on May 29, 2026, to approximately 18,000 owners in campaign CSP14. As stated in our prior communication, we will send subsequent dealer emails with future phased mailings planned throughout Summer 2026. We have also released the Repair Procedure under TSB 04-003/26, the Parts & Warranty information and updated all dealer-facing FAQ documents. ATTENTION ALL DEALERS - Vehicles to be repaired: Due to limited parts supply only the vehicles in this notice can be repaired. To help your Mazda dealer staff identify which vehicles can be repaired we have created an Excel-based VIN look-up tool in Mazda Global Service Support (MGSS) under this campaign. Please enter the VIN in the tool if the customer does not have their parts available letter to confirm the vehicle can be repaired under this CSP. At this time, remaining customers in CSP14 and CSP15 must wait to receive notice that parts are available. Key Benefits of the Customer Service Program-Extended Warranty Coverage for Rear Brake Squeal: Mazda is expanding the standard brake pad coverage from 1-year/12,000 miles to 3-years/36,000 miles to cover repairs related to rear brake squeal. The owner is eligible for a one‑time replacement of redesigned rear brake pads at no cost if the brake squeal symptom matches a Technical Service Bulletin (TSB) which will be published prior to sending the Second notification. The redesigned brake pads will be covered under the vehicle’s original 3-year/36,000-mile warranty, or 1 year/12,000 miles from installation whichever provides longer coverage.