Honda Pilot class action lawsuits currently cover six distinct problems: a nine-speed transmission programming defect, Auto Idle Stop engines that fail to restart, premature 3.5-liter V6 engine failures, infotainment system glitches, popping and crackling speakers, and a braking master cylinder defect. Two of these cases have produced settlements you can already claim under, and the rest remain pending. What you can do depends on which model year you own and which defect affected your vehicle.
Auto Idle Stop Settlement: Claims Open Now
The Auto Idle Stop case is the one most Pilot owners will want to look at first, because relief is available. The consolidated litigation, In re Honda Idle Stop Litigation (Case No. 2:22-cv-04252-MCS-SK, Central District of California), targeted vehicles whose engines shut off at a stop and then failed to restart when the driver lifted off the brake. The complaint alleged Honda knew about the problem as early as 2017 but kept selling affected vehicles.1FeganScott. Honda Idle Stop Defect
The settlement class covers vehicles with an NP0 engine, nine-speed automatic transmission, and Auto Idle Stop:
- 2016–2021 Honda Pilot
- 2019–2021 Honda Passport
- 2020–2021 Honda Ridgeline
- 2015–2020 Acura TLX
- 2016–2020 Acura MDX
Total-loss vehicles are excluded. Owners who already received the upgraded “A53” starter motor free under warranty are also excluded from the class but can still claim reimbursement for any out-of-pocket costs they paid.2Settlement-Claims.com. Auto Idle Stop Settlement FAQ
What You Get
The settlement does not create a cash fund. Instead, three benefits apply:
- Honda is revising its service bulletins so a dealer no longer has to personally witness the no-restart failure before performing a free starter motor replacement under warranty.3Settlement-Claims.com. Long Form Notice
- Owners can be reimbursed for documented past costs tied to the no-restart issue, including starter replacements, starter relays, valve adjustments, and towing.3Settlement-Claims.com. Long Form Notice
- Honda is extending the 10-year warranty claims window: 18 extra months for 2016 Honda Pilot, 2016 Acura TLX, and 2016 Acura MDX owners, and 24 extra months for 2015 Acura TLX owners.4Settlement-Claims.com. Auto Idle Stop Settlement
How and When to File
Claims can be submitted online at AutoIdleStopSettlement.com, by email, or by mail. You will need proof of payment (receipts or credit card statements) and proof of the repair (a repair order). For costs paid before August 8, 2025, claims are due within 90 days of the Final Approval Order. For costs paid after that date, claims are due within 60 days of when the expense is incurred.5Settlement-Claims.com. Claim Form A final approval hearing was scheduled for October 20, 2025, with the Final Approval Order potentially entering as early as May 18, 2026.4Settlement-Claims.com. Auto Idle Stop Settlement
Nine-Speed Transmission Lawsuit: Pending
Moore et al. v. American Honda Motor Co., Inc., filed in September 2023 in the Northern District of California, alleges that the ZF 9HP nine-speed automatic transmission in 2016–2022 Honda Pilots suffers from a software-driven programming defect.6ClassAction.org. Honda Transmission Problems Lawsuit The same case covers 2018–2019 Odysseys, 2019-and-later Passports, and 2020-and-later Ridgelines.7CarComplaints.com. Honda 9-Speed Transmission Lawsuit
Plaintiffs allege faulty calibration of the transmission control module and powertrain control module causes delayed and rough shifting, sudden harsh accelerations and decelerations, grinding, loss of power, and unpredictable behavior when merging or accelerating from a stop.7CarComplaints.com. Honda 9-Speed Transmission Lawsuit The complaint says Honda acknowledged the issue through technical service bulletins but never issued a recall, extended the warranty, or offered free repairs, and that the software updates it did release only masked symptoms.6ClassAction.org. Honda Transmission Problems Lawsuit The case remains pending. No settlement or trial has occurred, so no claims can be filed yet.
3.5-Liter V6 Engine Failure Lawsuit: Newly Filed
Savannah Messenger v. American Honda Motor Co. Inc., filed January 12, 2026, in the Central District of California, targets the 3.5-liter V6 engine itself. The complaint alleges design and manufacturing flaws cause premature failure of connecting rods, pistons, bearings, and the crankshaft, producing abnormal engine noise, loss of power, stalling, overheating, and, in the worst cases, fires.8AboutLawsuits.com. Honda Class Action Lawsuit Recall Engine Defect
The lead plaintiff’s 2016 Honda Pilot engine failed at 76,420 miles after metal shavings appeared in the oil pan. Honda declined a free replacement because the vehicle was outside its five-year, 60,000-mile powertrain warranty. She paid $2,400 for a rebuilt engine; a new engine had been quoted at $11,874.9Autoblog. Honda V6 Engine Class Action Lawsuit
Pilot model years named in the suit run from 2016 through 2022. The lawsuit also covers 2018–2026 Odysseys, 2019–2025 Passports, 2017–2026 Ridgelines, and several Acura RLX, TLX, and MDX years.8AboutLawsuits.com. Honda Class Action Lawsuit Recall Engine Defect It asserts breach of express and implied warranty, fraudulent omission, and violations of state consumer protection laws, and seeks class certification, repair reimbursement, and damages for lost vehicle value. Honda has moved to dismiss.10PACER Monitor. Savannah Messenger v. American Honda Motor Co. No relief is available yet.
Note on the 2023 Recall
If you own a 2016 or 2018–2019 Pilot, you may already be covered by a narrower Honda recall issued in November 2023 (NHTSA 23V-751). That recall covered 248,999 vehicles with improperly manufactured crank pins and directed dealers to inspect and, if necessary, repair or replace engines at no cost, with reimbursement for owners who had already paid.11NHTSA. Recall 23V-751 The Messenger complaint argues that recall was too narrow to catch the wider pattern of engine failures.8AboutLawsuits.com. Honda Class Action Lawsuit Recall Engine Defect
Infotainment System Settlement: Extended Warranty in Place
Conti et al. v. American Honda Motor Co., Inc. (Case No. 2:19-cv-02160), filed in March 2019 and given final approval on January 4, 2022, covered defective infotainment systems in the 2019 Honda Pilot, 2019 Honda Passport, and 2018–2019 Honda Odyssey.12Hagens Berman Sobol Shapiro LLP. Honda Infotainment Class Action
The roughly $33.77 million settlement delivered its value almost entirely through extended warranties rather than cash. Honda doubled the infotainment warranty from three years or 36,000 miles to five years or 60,000 miles from the original purchase date. Additional benefits included free HondaLink Security Service or SiriusXM subscriptions for owners with multiple dealer visits, reimbursement for battery recharging and transportation costs, mandatory technician training, and ongoing software updates during the extended warranty period.13ClassAction.org. Conti Final Approval Order
Audio Popping and Crackling Lawsuits
Two separate suits target speakers that emit loud, random popping and crackling regardless of whether the audio system is on. Owners say the noise can blank the infotainment screen (disabling the speedometer, phone, and backup camera) and startles drivers.14Top Class Actions. Honda Speaker Defect Class Action
Plotts v. American Honda Motor Co., Inc. (Case No. 2:22-cv-04529), filed July 2022, covers 2020–2021 Pilots (excluding LX), plus specified Passport and Odyssey years.15ClassAction.org. Honda Sound System Defect Class Action Fausto et al. v. American Honda Motor Co., Inc. (Case No. 2:24-cv-07308), filed August 2024, extended the coverage to 2022 Pilots and Passports plus 2021–2022 Odysseys.16ClassAction.org. Fausto v. American Honda Both allege Honda has replaced parts with equally flawed components rather than fixing the underlying defect.
Braking Defect Lawsuit
Geddis-Wright v. American Honda Motor Company, Inc. (Case No. 5:24-cv-04886), filed September 2024 in the District of South Carolina, alleges a braking defect in 2021–2022 Honda Pilots and certain Civic, Ridgeline, Passport, and Acura MDX model years. The complaint claims improperly assembled tie rod fasteners connecting the brake master cylinder to the brake booster can work loose and break under braking force, causing the master cylinder to separate and brake function to fail. The plaintiff argues Honda’s July 2023 recall of about 125,000 vehicles did not address the root manufacturing cause.17ClassAction.org. Honda Braking Defect Class Action
NHTSA Investigations Running Alongside
Two federal investigations may eventually broaden what Honda has to fix. NHTSA opened Engineering Analysis EA25004 on March 26, 2025, covering roughly 2.2 million Honda and Acura vehicles from model years 2015 through 2025 for the same Auto Idle Stop no-restart failure, a much wider range than the class settlement. The agency noted that no-restart complaints continue even after Honda’s service bulletin repairs, and had logged 1,348 incidents including four crashes or fires and two injuries. It aims to finish within 18 months and decide whether a recall is warranted.18NHTSA. Engineering Analysis EA25004
NHTSA also opened Preliminary Evaluation PE25008 on August 20, 2025, covering approximately 1.41 million vehicles with the 3.5L V6, including 2016–2020 Honda Pilots. The agency found the engine failures being reported fall outside the 2023 recall’s scope and are not caused by the same crankshaft manufacturing defect, pointing to a separate failure mode.19CBS News. Honda Acura Engine Failure NHTSA Investigation The probe was triggered by more than 3,000 failure reports and at least seven crash or fire incidents.20AboutLawsuits.com. Honda Engine Problems Investigation If either investigation results in a recall, the covered repairs would apply regardless of how the related class actions turn out.