Honda & Acura Auto Idle Stop Defect Settlement
In re Honda Idle Stop Litigation, No. 2:22-cv-04252-MCS-SK (U.S. District Court, Central District of California)
Closed. The claim deadline of August 18, 2026 has passed. You can no longer file a claim for this settlement. This page is kept for reference.
A settlement over allegations that the Auto Idle Stop (AIS) feature in certain Honda and Acura vehicles is defective because the engine may fail to automatically restart when the driver releases the brake, leaving the vehicle temporarily undrivable. Honda denies wrongdoing. The deadline of August 18, 2026 has passed, so this settlement is closed.
Estimated payout
Reimbursement of past out-of-pocket costs for AIS 'no-restart' repairs (such as the starter, starter relay, or related valve adjustment), plus an extended repair/warranty claim period and removal of prior symptom-verification requirements for free repairs.
Proof required?
Reimbursement claims require repair invoices or receipts showing the AIS-related work and what you paid. The warranty extension and free repair coverage are applied automatically and don't need a claim form.
Cost
Always free through the official administrator.
Who qualifies
People in the U.S. who bought or leased a 2015–2020 Acura TLX, 2016–2020 Acura MDX, 2016–2021 Honda Pilot, 2019–2021 Honda Passport, or 2020–2021 Honda Ridgeline equipped with the NP0 engine, nine-speed automatic transmission, and the Auto Idle Stop feature.
Background
Auto start-stop systems shut the engine off at stops to save fuel and restart it when the driver lifts off the brake. Owners alleged Honda's version could fail to restart, briefly stranding drivers in traffic. Several suits were consolidated and Honda agreed to settle nationwide, dropping the symptom-verification hurdle that had blocked some free repairs.
What you need to file
- Confirmation your vehicle is a covered Honda/Acura model, year, and engine.
- Repair invoices or receipts for AIS 'no-restart' repairs you paid for.
- Your contact information and a payment choice.
What you can get
Reimbursement of past out-of-pocket costs for AIS 'no-restart' repairs (such as the starter, starter relay, or related valve adjustment), plus an extended repair/warranty claim period and removal of prior symptom-verification requirements for free repairs.
Proof of purchase or loss: Reimbursement claims require repair invoices or receipts showing the AIS-related work and what you paid. The warranty extension and free repair coverage are applied automatically and don't need a claim form.
Free to file. We’re not a law firm.
Unclaimed Guide is an independent guide. We are not a law firm, not a claims-filing service, and not affiliated with American Honda Motor Co., Inc., the settlement administrator, or the court. You can always file this claim yourself, for free, at the official site above. Never pay a company that offers to file it for you.
Common questions
Covered Honda/Acura owners get an extended repair/warranty period and free AIS repairs without the old symptom-verification requirement. If you already paid out of pocket for an AIS no-restart repair, file a reimbursement claim with your receipts by August 18, 2026 through the official settlement site.
Yes. Filing is always free through the official settlement administrator at settlement-claims.com/autoidlestop. You never need to pay a law firm or a claims service — we are an independent guide and are not affiliated with the settlement, the administrator, or the court.
No. The deadline (August 18, 2026) has passed, so the window is closed. Deadlines are set by the court; check settlement-claims.com/autoidlestop for any updates.
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