2025 Acura MDX Common Complaints and Problems

2025 Acura MDX: Common Complaints, TSBs, Recalls, Class Actions, and References

The 2025 Acura MDX is a mid-cycle refresh of the fourth-generation (YD4) platform that launched for 2022. It uses the 3.5L V6 (J35Y5, ~290 hp) on most trims and the 3.0L turbo V6 (J30AD, ~355 hp) on Type S. By September 2026, owner reports, NHTSA filings, and dealer communications show a relatively high concentration of engine/start-stop and electrical issues for a luxury SUV that is still in its first couple of service years. Complaint counts vary by source (roughly 60–160+ depending on database and date), with engine/engine-cooling and electrical systems at the top.

This is not a “lemon year” in the classic high-mileage sense yet, but several issues are safety-relevant (no-restart in traffic, blank rear camera, loose brake pedal) and some are already under manufacturer investigation or recall.

Common complaints and problems

1. Auto idle stop / no-restart (highest-profile safety complaint)

Owners report the engine shuts off at a stop as designed, then fails to auto-restart when the brake is released. In some cases the push-button start also fails until the vehicle is fully powered down and tried again. Reports describe being stranded at lights, in intersections, or in traffic, with near-miss rear-end situations.

American Honda has issued dealer messages asking stores to inspect 2023–2025 MDX vehicles with this complaint before any repair, collect DTCs, battery photos, and parts, and not replace starter/battery sensor first in qualifying cases. Qualifiers typically exclude Type S, require a post-December 2022 build, and exclude vehicles that already had starter or battery-sensor replacement.

NHTSA has an engineering analysis (EA25004) covering a large Honda/Acura start-stop population (on the order of 2 million vehicles, 2015–2025 range in related reporting), with hundreds to thousands of complaints across brands and some crash/injury mentions. 2025 MDX owners have explicitly asked to be included in that analysis.

Related older-generation MDX idle-stop issues (2016–2020) already had warranty extensions for starter/valve work; the 2025 pattern looks more electrical/software/PCM-related in owner descriptions.

2. Engine and electrical (warning lights, harnesses, stalling)

CarProblemZoo lists engine and engine cooling as the largest 2025 MDX category (~60 of 161 reported problems), then electrical (~40).

Owner reviews mention repeated engine-bay / throttle-area wire harness replacements, dash lights illuminating together, and loss of ADAS functions until the harness is replaced. Rough shifts and a whine around 45–50 mph are also reported after electrical work.

Type S models have a separate FI-ECU software stall/loss-of-power recall (see below).

3. Infotainment and rear camera

• Center screen going blank so the rearview camera does not display (official recall).
• Glitchy navigation (map zooming out), voice-command dropouts.
• Apple CarPlay pairing/call-audio problems.
• Complaints about no hardwired SiriusXM and app-based audio being awkward while driving.

4. Interior quality

Repeated reports of squeaks, creaks, rattles from dash, trim, seats, and rearview-mirror area; owners comparing cabin noise unfavorably to competitors. Some have been back to the dealer multiple times.

5. Rear-wheel screech / scrape

Rocks lodge between the rear brake disc and splash guard, causing screeching, squeaking, or scraping. Covered by TSB 24-025 for early 2025 VINs (and 2022–2024). Remedy is splash-guard replacement (and related hardware).

6. Steering

Grinding/groaning from the column (especially with power tilt/telescoping easy-entry), clicking at low-speed turns, and isolated reports of EPS warning / sudden heavy steering. A 2022–23 TSB for loose outer tie-rod nuts is often cited as a cheaper check before rack replacement. No 2025 MDX steering recall identified.

7. Type S–specific

• FI-ECU stall software (recall).
• Air-suspension stroke-sensor DTCs (C1644–C1647) and “vehicle height cannot be adjusted” messages; Honda has been collecting cases.

8. Other lower-volume items

Service brakes, powertrain/SH-AWD, forward-collision systems, EVAP (P0441 on some later builds), HVAC high-pitched noise on high fan, intermittent wiper-motor inop (dealer investigations). A petition on 2022–2023 MDX/TLX PTU–transaxle spline strip / loss of AWD (DP26001) was denied by NHTSA in 2026 as not meeting the bar for a formal safety investigation; it is more relevant to earlier fourth-gen years than to late 2025 production.

Context: 2025 complaint volume is higher than 2023–2024 in several aggregators and is flagged as a year to scrutinize because a large share of filings are labeled “severe” (stall, crash risk, safety systems). It is still below peak third-gen years (2016–2020) in raw historical totals. Consumer Reports has described overall 2025 MDX reliability as about average for the model year.

Recalls affecting the 2025 MDX

Always verify by VIN at nhtsa.gov/recalls. Campaigns that apply to 2025 MDX include:

Sources: NHTSA Part 573 materials and manufacturer campaign letters.

The widely publicized tailgate lid-light / moisture / rear lighting campaign is for 2014–2020 MDX, not 2025.

Technical service bulletins and dealer communications

NHTSA's public TSB dump for brand-new model years is often incomplete; dealer SIS and AcuraZine compilations are more useful.

Documented items that include 2025 MDX:

• 24-025 — Rear wheel area screeching/scraping; rocks between disc and splash guard; replace splash guards. Early 2025 VIN cutoffs listed in the bulletin.
• 25-012 — Safety recall procedure for the center information display.
• 25-010 — Type S PGM-FI software update (ties to 25V031 / DTC P061B).
• 24-031 / 24-032 — TQI (new-vehicle prep) information for 2025 MDX and Type S.
• 25-017 — Brake pedal pin inspection (recall 25V391).
• Dealer messages (BTI series): auto idle stop no-restart parts collection on 2023–2025 MDX; HVAC whine; inoperative front wipers; Type S air-suspension stroke sensors; later EVAP P0441 searches; infotainment SMS/Bluetooth/Android Auto audio quirks.

There is no single public “fix-all” TSB for 2025 idle-stop no-restart comparable to the 2016–2020 warranty-extension bulletin (23-002). Honda is still in investigation/parts-collection mode on the newer cars.

Class actions and legal activity

No certified class action unique to the 2025 MDX was identified as of early September 2026.

What is active or adjacent:

• Law-firm investigations into 2025 MDX auto stop/start no-restart (intake forms, lemon-law marketing). These are not certified classes.
• Broader Honda/Acura idle-stop litigation historically targeted earlier years (e.g., 2015–2020/2021 TLX, MDX, Pilot, Passport, Ridgeline) and produced settlements and service-bulletin amendments—not a 2025-specific certified class.
• 2016–2020 MDX engine wire-harness / throttle-connectivity case (Clark v. American Honda) received class certification in late 2025 for certain states; Ninth Circuit denied Honda's 23(f) appeal in 2026. That class does not include 2025.
• Paint delamination putative class actions cover a wide Honda/Acura range from ~2013 forward (MDX included as a class vehicle in complaints); not 2025-specific.
• Older HandsFreeLink settlement is 2004–2009 era vehicles only.

Owners with repeated no-restart or electrical failures should still file at SaferCar.gov and document dealer visits for state lemon-law timelines; that is separate from a nationwide class.

Practical takeaways

1. Run the VIN for open recalls (display unit, brake pedal, Type S FI-ECU).
2. If idle stop fails to restart, treat it as a safety defect: document date/location, have the dealer follow Honda's inspection protocol before random starter/battery swaps, and file an NHTSA complaint referencing EA25004 if applicable.
3. Early-build 2025s should be checked for splash-guard TSB 24-025 if the rear brakes screech after gravel roads.
4. Type S buyers should confirm FI-ECU software and watch air-suspension messages.
5. Interior rattles and infotainment glitches are common enough in reviews that a pre-purchase/PDI inspection and a short test of CarPlay, camera, and cabin noise are worthwhile.
6. Reliability picture is still maturing; 2026 filings rose as the fleet aged into its second year.

References

• NHTSA recall lookup and campaign documents: 25V-032, 25V-031, 25V-391 (nhtsa.gov / static.nhtsa.gov Part 573 PDFs).
• CarProblemZoo 2025 MDX problem statistics.
• Edmunds 2025 MDX owner reviews.
• AcuraZine TSB compilation for 2025 MDX.
• Service Bulletin 24-025 (rear splash guards).
• Honda dealer messages on 2023–2025 MDX idle-stop no-restart.
• Consumer Reports 2025 MDX reliability summary.
• CarWhere / NHTSA-complaint year comparisons.
• NHTSA petition closeout DP26001 (2022–2023 AWD/PTU splines).
• Reporting on EA25004 idle-stop engineering analysis.
• Class-action reporting: Clark (2016–2020 harness); idle-stop MDL/settlement materials; paint cases.

This report reflects publicly available owner, NHTSA, and manufacturer information as of September 2026. Counts and campaign populations change; a VIN check and a current SaferCar search are the authoritative status for any one vehicle.