Engine
3.5L 6-cyl
How to read this file. Complaint records are unverified owner submissions to the federal safety agency. Counts are raw, not adjusted for sales volume or vehicle age. Recall campaigns apply to the model; only a VIN check shows whether this car is affected or repaired. Parts shown are named by an editorial note or listed as a search directory; none is a diagnosis. Full methodology.
Fault profile
Complaint-component records on this vehicle, grouped by family. A complaint naming two systems counts once in each.
Complaints are owner-reported and not verified by the agency.
When it fails
The timing of this vehicle's reported failures, from the complaint file itself. A cluster tells you what to expect and when; it is shaped by reporting behavior as well as by the vehicle.
Vehicle age when the failure occurred
Years between the model year and the owner's reported failure date. Based on 108 of 108 complaints with a usable failure date.
Known issues
The component families with the most complaint records against this vehicle. Counts, crash and fire figures belong to the whole family, not to any single named issue. Parts listed are related system parts, not a diagnosis.
Engine & cooling
66 complaint records
"2025 Acura MDX failed to restart after an auto-idle stop at a light in heavy traffic. Second time this has happened and dealer has not resolved..."- one owner's federal complaint about this system; it may not describe the issue named above
Parts
No specific part is named for this issue. Browse engine & cooling parts in the directory →
Electrical system
51 complaint records
"Auto start-stop system stalled my car at a red light few times. Also I can clearly tell starting/cranking it is lagging as well...."- one owner's federal complaint about this system; it may not describe the issue named above
Parts
No specific part is named for this issue. Browse electrical system parts in the directory →
Fuel system
13 complaint records
"Randomly when auto/start stop feature engages and shuts down the engine when I let go off the brake the engine doesn't restart and a system problem message show up on the dash. Have to shut down the car and restart for the engine to start running again...."- one owner's federal complaint about this system; it may not describe the issue named above
Parts
No specific part is named for this issue. Browse fuel system parts in the directory →
Federal defect investigations
Formal investigations opened by the federal safety agency into this vehicle. An investigation is the step between a complaint pattern and a recall; not every one results in one.
| Investigation | Status | Component | Subject |
|---|---|---|---|
| EA25004 opened Mar 2025 | OPEN | Engine And Engine Cooling | No Restart After Auto Start/Stop Engages On June 3, 2022, the Office of Defects Investigation (ODI) opened Preliminary Evaluation PE22005 after the agency received VOQs and several field reports concerning the Auto Idle Stop (AIS) feature on 2016-2019MY Honda Pilot vehicles. |
Recall campaigns
Safety-recall remedies are normally provided at no charge. Under US federal law the mandatory free remedy applies when the vehicle was no more than 15 years old at the time the defect was determined; manufacturers often cover older vehicles voluntarily. Canadian rules differ. Confirm eligibility with the manufacturer using the VIN. Each campaign number links to the federal record.
| Campaign | Component | Summary | Remedy |
|---|---|---|---|
| 26V332000 | Air Bags | Honda (American Honda Motor Co.) is recalling certain 2018-2021, 2023 Acura TLX, 2019-2024 RDX, 2017-2020, 2022-2026 MDX, 2017-2021, 2023, 2025 Honda Ridgeline, 2017-2022 Pilot, 2019-2021 Passport, 2018-2026 Odyssey,... | Normally free |
| 25V391000 | Service Brakes, Hydraulic | Honda (American Honda Motor Co.) is recalling certain 2021-2025 Acura TLX, 2023-2025 Acura MDX, and 2023-2025 Honda Pilot vehicles. | Normally free |
| 25V032000 | Equipment | Honda (American Honda Motor Co.) is recalling certain 2025 Acura MDX vehicles. The touchscreen in the center console may go blank, resulting in the rearview camera image not displaying as intended. | Normally free |
Transport Canada recalls
Recalls issued under Canadian law for this model year, from Transport Canada's Vehicle Recalls Database. Matched by model name, so a Canadian-market variant may appear here that was sold under another name in the US. Units are Canadian vehicles affected.
| Recall | System | Units (CA) | Summary |
|---|---|---|---|
| 2025318 2025-06-12 | Brakes | 15,574 | Issue: On certain vehicles, the brake pedal assembly may not have been manufactured properly. As a result, the brake pedal could move and cause you not to be able to apply the brakes properly, or to apply the brakes unexpectedly. |
| 2025028 2025-01-23 | Visual System | 829 | Issue: Under certain conditions, a software problem could cause the center information display to go blank. As a result, the rearview camera image would not appear on the display when the transmission is shifted into reverse. |
| 2025029 2025-01-23 | Fuel System | 16,977 | Issue: On certain vehicles, a software problem in the fuel injection electronic control unit could cause the engine to stall while driving. Safety Risk: A sudden loss of power to the wheels could increase the risk of a crash. |
Service bulletins and warranty extensions
Manufacturer communications to dealers on file with the federal agency: repair instructions, service campaigns, and warranty extensions. A warranty extension means the manufacturer may pay for a repair the recall table does not cover.
| Bulletin | Type | Component | Summary |
|---|---|---|---|
| BBTS28851 Jul 2026 | Steering | Tech Line Summary Article - Customers are complaining of a clicking noise from front of vehicle while turning at low speeds. This is a temporary solution to address the issue. | |
| BTI&05122026901 May 2026 | Engine | Dealer Message - American Honda Motor Co., Inc. (AHM) is searching for certain 2024-2026 MDXs with a client complaint of the Malfunction Indicator Light (MIL) on with the DTC P0441 (EVAP System Purge Flow Malfunction) stored. | |
| BTI&04292026901 Apr 2026 | Engine | Dealer Message - American Honda Motor Co., Inc. (AHM) is searching for certain 2024-2026 MDXs with a client complaint of the Malfunction Indicator Light (MIL) on with the DTC P0441 (EVAP System Purge Flow Malfunction) stored. | |
| BTI&04202026901 Apr 2026 | Engine | Dealer Message - American Honda Motor Co., Inc. (AHM) is searching for certain 2024-2026 MDXs with a client complaint of the Malfunction Indicator Light (MIL) on with the DTC P0441 (EVAP System Purge Flow Malfunction) stored. | |
| BBTS30565 Apr 2026 | Electrical System | Tech Line Summary - The vehicle's infotainment system displays previously viewed SMS messages upon each ignition cycle, when the customer's Android phone is connected via Bluetooth. |
Show 20 more bulletins
| Bulletin | Type | Component | Summary |
|---|---|---|---|
| BB28518 Mar 2026 | SOFTWARE UPDATE | Electrical System | Over The Air System Updates - Vehicles equipped with the System Updates application are capable of downloading and installing Over the Air System updates (OTA). A connection to a Wi-Fi network is needed to perform the update over the air. |
| B28518 Jan 2026 | SOFTWARE UPDATE | Electrical System | Over the Air System Update - System updates contain upgrades that fix operational errors and/or provide a variety of enhancements, which adds new functionality. Information about the various software releases can be found in this document. |
| BB29050 Aug 2025 | Electrical System | Tech Line - Customers may experience error code S001 with their audio unit. The vehicle may also have DTC B2B05-92 CAN Gateway error stored due to the dealership’s wi-fi settings. | |
| BTI&07312025903 Aug 2025 | Engine | Dealer Message - American Honda Motor Co., Inc. (AHM) is searching for certain 2023-2025 MDXs with a client complaint of a no auto re-start condition after going into an auto idle stop. The push button ignition may or may not restart the engine. | |
| BBTS28851 Jul 2025 | Steering | Tech Line Summary - Customers are complaining of a clicking noise from front of vehicle while turning at low speeds. This is a temporary solution to address the issue. | |
| BTI&07152025901 Jul 2025 | Engine | Dealer Message - American Honda Motor Co., Inc. (AHM) is searching for certain 2023-2025 MDXs with a client complaint of a no auto re-start condition after going into an auto idle stop. The push button ignition may or may not restart the engine. | |
| B24-025 Jul 2025 | Wheels | Service Bulletin - Customers are experiencing screeching, squeaking, rubbing, or scraping from the rear wheel area due to rocks are getting caught between the rear brake disk and splash guard. | |
| BTI&05272025901 May 2025 | Suspension | Dealer Message - American Honda Motor Co., Inc. (AHM) is searching for certain 2023-2025 MDXs with a client complaint of a front suspension noise while turning left and/or right. The noise can be described as a clicking. | |
| BTI&05212025902 May 2025 | Engine | Dealer Message - American Honda Motor Co., Inc. (AHM) is searching for certain 2023-2025 MDX with a client complaint of a no auto re-start condition after going into an auto idle stop. The push button ignition may or may not restart the engine. | |
| BTI&05162025901 May 2025 | Electrical System | Dealer Message - American Honda Motor Co., Inc. (AHM) is searching for certain 2025 MDX’s with a client complaint of no sound while making Android Auto or Bluetooth phone calls. | |
| BTI&05092025901 May 2025 | Structure | Dealer Message - American Honda Motor Co., Inc. (AHM) is searching for certain 2019-2025 RDXs and 2022-2025 MDXs with a client complaint of a pop noise in the rear sunroof area. | |
| BTI&04252025901 Apr 2025 | Structure | Dealer Message - American Honda Motor Co., Inc. (AHM) is searching for certain 2019-2025 RDXs and 2022-2025 MDXs with a client complaint of a pop noise in the rear sunroof area. | |
| BTI&11052024901 Nov 2024 | Visibility/Wiper | Dealer Message - American Honda Motor Co., Inc. (AHM) is investigating certain 2023-2025 MDXs with a client complaint of the front wiper motors being inop. | |
| BTI&10252024902 Oct 2024 | Visibility/Wiper | Dealer Message - American Honda Motor Co., Inc. (AHM) is searching for certain 2022-2025 MDXs with a client complaint of a high-pitched noise coming from the front HVAC system when on the high fan setting. The high-pitched noise can be described as a whine. | |
| BTI&10212024905 Oct 2024 | Visibility/Wiper | Dealer Message - American Honda Motor Co., Inc. (AHM) is investigating certain 2023-2025 MDXs with a client complaint of the front wiper motors being inop. | |
| BTI&10042024902 Oct 2024 | Visibility/Wiper | Dealer Message - American Honda Motor Co., Inc. (AHM) is investigating certain 2023-2025 MDXs with a client complaint of the front wiper motors being inop. | |
| BTI&09162024902 Sep 2024 | Visibility/Wiper | Dealer Message - American Honda Motor Co., Inc. (AHM) is investigating certain 2023-2025 MDXs with a client complaint of the front wiper motors being inop. | |
| ATI&08292024901 Aug 2024 | Visibility/Wiper | Dealer Message - American Honda Motor Co., Inc. (AHM) is investigating certain 2023-2025 MDXs with a client complaint of the front wiper motors being inop. | |
| B24-025 Jul 2024 | Wheels | Service Bulletin - Drivers are experiencing screeching, squeaking, rubbing, or scraping from the rear wheel area due to rocks are getting caught between the rear brake disk and splash guard. | |
| B24040A May 2024 | Engine | Service News - Due to On-Board Diagnostic (OBD) regulation change starting with 2019 vehicles, American Honda’s Variable Valve Timing and Lift Electronic Control (VTEC) On-Board Diagnostic monitors are now included in the EGR/VVT OBD Monitor Readiness status group. |
Before you buy this vehicle
A test-drive checklist generated from this vehicle's own complaint and recall record.
- Cold-start it yourself and listen for the first thirty seconds.Knocking, ticking that fades as it warms, or blue or white smoke on startup are the sounds of this vehicle's engine cluster. Check the oil level and the coolant color, and ask whether the engine or its head gaskets have ever been out.
- Sit in it with the engine off and test everything that has a switch.Windows, locks, lights, the cluster, the radio. Electrical faults are this vehicle's story and the hardest to see on a drive: an intermittent no-start waits for the second week of ownership. Ask for the battery's age and whether any control module has been replaced.
- Smell for fuel and watch the first restart when hot.Hard starting when warm, hesitation under load, or any fuel odor near the tank or engine bay match this vehicle's fuel-system cluster. Check the recall table for fuel pump campaigns.
- Run the VIN against open recalls before you negotiate.This vehicle has 3 recall campaigns on file. An open recall needs VIN-specific confirmation. Many are quick, no-charge fixes and worth negotiating over; an unresolved do-not-drive advisory, or a remedy the manufacturer has not yet made available, should stop the purchase until it is resolved.
- Ask for the service history in writing, then read it against this page.The complaint families above are where owners of this vehicle report trouble. Repairs in exactly those systems are evidence the car had the problem; no such repairs could mean it never developed it, or that it was never fixed. The test-drive items above are how you tell those apart.
Parts search directory
The generic parts list for this vehicle has its own page: a search launcher for every system, filtered by fuel type and era but not by engine, trim, or brake type. It is not a diagnosis and not a fitment guarantee.
Open the parts directory for this Acura MDX →