2026 Acura MDX Problems
Owner-reported complaints filed with NHTSA, grouped by component
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What this page shows
Everything below is an owner-reported complaint submitted to NHTSA about the 2026 Acura MDX, grouped by the component NHTSA recorded on the report. These are not confirmed defects, and they are not recalls. NHTSA does not verify most reports before publishing them, and a category with more reports in it is not evidence that a part is defective.
Complaints are reports submitted by owners and drivers to NHTSA. They are not verified and do not establish that a defect exists.
Reports by component
Ranked by how many owner reports name each component category
- Driver assistance342.9%
- Electrical228.6%
- Engine114.3%
- Powertrain (other)114.3%
Percentages are of component mentions. A single complaint can name more than one component, so these do not sum to the total complaint count.
Each component in detail
What the reports in each category say, in the owners' own words
Driver assistance
Reports naming forward-collision avoidance, lane keeping, back-over prevention, cruise control and related electronic driver-assistance systems.
From owner reports, verbatim
I am writing to formally escalate an unresolved matter regarding my 2026 Acura MDX Technology, purchased on XXX, from Piazza Acura of [XXX]. As a loyal Acura customer of over nine years and currently on my fourth lease, this experience is both unexpected and unacceptable. Since shortly after purchase, the vehicle has exhibited persistent and unresolved performance issues, most notably harsh and inconsistent gear shifting and a pronounced vibration in the accelerator pedal. Despite multiple service visits and significant time invested, these concerns remain unresolved. I have repeatedly been advised that these conditions are “normal characteristics” of the vehicle due to adaptive transmission behavior—an explanation that is inconsistent with my prior ownership experience across multiple MDX models (2017, 2020, and 2023) and does not align with reasonable expectations for a vehicle in this class. To be clear, the vehicle in its current condition fails to meet reasonable standards of quality, reliability, and merchantability for a $62,000+ luxury vehicle. Additionally, the vehicle did not exhibit these issues during pre-purchase test drives, indicating these conditions are neither inherent nor acceptable. The service history is summarized below: April 18, 2026 – Piazza Acura of Ardmore Issues: Installation of a sport heated steering wheel (contractually owed), slow acceleration, harsh shifting, vibration in the accelerator pedal, GPS inoperable Service time: 1 day April 24, 2026 – Piazza Acura of Ardmore Issues: Installation of the correct heated steering wheel, continued transmission and vibration in the accelerator pedal concerns Service time: 6 days May 11, 2026 – Elite Acura (NJ) Issue: Accelerator pedal vibration Service time: ~1.5 hours June 15, 2026 – Piazza Acura of Ardmore Issues: Ongoing vibration in the accelerator pedal, Blind Spot Information System problem warning Service time: 2+ days (ongoing) INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)
Google on-board gives a persistent error that the MMI and car driving technology firmware cannot be completed. Service center says it’s known and they can’t do anything. The car is supposed to have voice control over vehicle temperature and functionality — it does not. It frequently will not automatically connect to a wireless Apple Car Play or Google Auto connection. Firmware is also supposed to communicate w car speed, etc. to make Acura Assist driving more safe.
Too few reports in this category for a page of its own — they appear in the full complaint list.
Electrical
Reports naming the electrical system — wiring, battery, charging, control modules, infotainment and electrical accessories.
From owner reports, verbatim
The blind spot monitor becomes inoperable when you leave the car in an open area with sun and warm weather on the car. If you take the car and place it in a garage or during nighttime the monitors will come back on. This problem was brought to the dealer, Gettel Acura, [XXX] in XXX. They replaced a Chip and told me it was fixed. It has not been fixed and the inoperable monitor makes it dangerous, especially on the interstate highway. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)
Google on-board gives a persistent error that the MMI and car driving technology firmware cannot be completed. Service center says it’s known and they can’t do anything. The car is supposed to have voice control over vehicle temperature and functionality — it does not. It frequently will not automatically connect to a wireless Apple Car Play or Google Auto connection. Firmware is also supposed to communicate w car speed, etc. to make Acura Assist driving more safe.
Too few reports in this category for a page of its own — they appear in the full complaint list.
Engine
Reports naming the engine itself — including stalling, misfires, oil consumption, cooling and internal engine components.
From owner reports, verbatim
2026 Acura MDX with 3.5 L V6 (J35Y-series) experienced connecting-rod bearing failure and total engine loss at 1,920 miles. Vehicle currently at dealer. Appears identical to failures under NHTSA PE25-008 (2016-2020 models)
Too few reports in this category for a page of its own — they appear in the full complaint list.
Powertrain (other)
Powertrain reports that are not specifically the engine or transmission — driveshafts, axles, transfer cases and differentials.
From owner reports, verbatim
I am writing to formally escalate an unresolved matter regarding my 2026 Acura MDX Technology, purchased on XXX, from Piazza Acura of [XXX]. As a loyal Acura customer of over nine years and currently on my fourth lease, this experience is both unexpected and unacceptable. Since shortly after purchase, the vehicle has exhibited persistent and unresolved performance issues, most notably harsh and inconsistent gear shifting and a pronounced vibration in the accelerator pedal. Despite multiple service visits and significant time invested, these concerns remain unresolved. I have repeatedly been advised that these conditions are “normal characteristics” of the vehicle due to adaptive transmission behavior—an explanation that is inconsistent with my prior ownership experience across multiple MDX models (2017, 2020, and 2023) and does not align with reasonable expectations for a vehicle in this class. To be clear, the vehicle in its current condition fails to meet reasonable standards of quality, reliability, and merchantability for a $62,000+ luxury vehicle. Additionally, the vehicle did not exhibit these issues during pre-purchase test drives, indicating these conditions are neither inherent nor acceptable. The service history is summarized below: April 18, 2026 – Piazza Acura of Ardmore Issues: Installation of a sport heated steering wheel (contractually owed), slow acceleration, harsh shifting, vibration in the accelerator pedal, GPS inoperable Service time: 1 day April 24, 2026 – Piazza Acura of Ardmore Issues: Installation of the correct heated steering wheel, continued transmission and vibration in the accelerator pedal concerns Service time: 6 days May 11, 2026 – Elite Acura (NJ) Issue: Accelerator pedal vibration Service time: ~1.5 hours June 15, 2026 – Piazza Acura of Ardmore Issues: Ongoing vibration in the accelerator pedal, Blind Spot Information System problem warning Service time: 2+ days (ongoing) INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)
Too few reports in this category for a page of its own — they appear in the full complaint list.
Higher-selling and older vehicles accumulate more reports. Counts are not failure rates and are not directly comparable between vehicles that sold in very different numbers.
Elsewhere on this vehicle
Data sources
- NHTSA Office of Defects Investigation — owner-reported complaints and the components recorded on them
Data on this page last refreshed .