$2.8M Mercedes-Benz Emissions Parts Warranty Settlement, Are You Eligible to Claim?

Mercedes-Benz USA, LLC agreed to settle a class action lawsuit alleging the automaker failed to identify 14 specific emissions-related vehicle parts as “high-priced” parts under California’s emissions warranty regulations — meaning those parts should have been covered for seven years or 70,000 miles at no cost to owners, but were not. Owners and lessees of model year 2015 or newer Mercedes-Benz vehicles registered in one of 17 covered states who paid out of pocket to diagnose, repair, or replace any of the 14 covered emissions parts between their vehicle’s four-year/50,000-mile and seven-year/70,000-mile warranty periods may claim 50% to 100% reimbursement. The claim deadline for pre-notice repairs is May 15, 2026.

Quick Facts

Current Status & What Happens Next

• Chief Judge Richard Seeborg of the U.S. District Court for the Northern District of California is overseeing the case, Hazdovac v. Mercedes-Benz USA, LLC et al., Case No. 3:20-CV-377. The settlement notice date is March 16, 2026, and the claims portal is open now at HazdovacEmissionsWarrantySettlement.com.
• The opt-out and objection deadline is April 30, 2026. The Court will hold a Fairness Hearing at 1:30 p.m. on June 25, 2026, at the U.S. District Court for the Northern District of California, San Francisco Courthouse, Courtroom 3, 17th Floor, 450 Golden Gate Avenue, San Francisco, CA 94102.
• Payments will be issued within 30 days of the final decision regarding each individual claim — meaning class members whose claims are approved before the fairness hearing may receive payment before the June 25, 2026 hearing.

What Is the Mercedes-Benz Emissions Parts Lawsuit About?

The lawsuit alleged that Mercedes-Benz USA failed to identify 14 vehicle parts as “high-cost” or “high-priced” emissions warranty parts under the requirements of the California Emissions Warranty — specifically California Code of Regulations Title 13, Sections 2035 et seq. Under that regulation, high-priced parts must be covered for seven years or 70,000 miles, whichever comes first. Because Mercedes did not classify the 14 subject parts under the HPP Warranty, owners who needed those parts repaired or replaced after their standard four-year/50,000-mile warranty expired were forced to pay out of pocket for services that should have been covered.

This settlement covers only Mercedes-Benz vehicles in states that have adopted California’s Low-Emission Vehicle (LEV) emissions regulations under Section 177 of the federal Clean Air Act. These states — known as “Section 177 States” or “Reg. 177 States” — follow California’s stricter emissions standards and thus are subject to the same HPP Warranty requirements that California mandates.

Important: This settlement is separate from and unrelated to the December 2025 multistate $149.6 million attorney general settlement covering diesel emissions defeat devices in Mercedes-Benz vehicles from 2008 to 2016. The Hazdovac settlement covers 14 specific emissions-related parts in model year 2015 and newer gasoline-powered non-electric vehicles — not the diesel emissions software issues addressed by the attorney general settlement. Mercedes-Benz USA denies all wrongdoing and agreed to settle to avoid continued litigation.

Who Is Eligible to File a Claim?

To be a class member eligible for reimbursement, you must satisfy all four of the following conditions: your vehicle was registered in one of the 17 covered Section 177 States during the relevant period; your vehicle was covered by the HPP Warranty; you paid out of pocket to diagnose, repair, or replace one or more of the 14 subject parts; and your payment occurred between your vehicle’s four-year/50,000-mile and seven-year/70,000-mile warranty period.

Covered states and model year start dates:

The 14 covered subject parts are: Manifold PCV Connection Assembly; Power Train Control Unit (PCM); Accelerator Pedal Sensor; Accelerator Pedal; Partial Load Operation Crankcase Ventilation Valve; Clean Air Line; Pressure Sensor Downstream of Air Filter; Check Valve within the EVAP System; Crankcase Ventilation System; Vent Control Valve; Charcoal Canister; Fuel Tank Level Indicator Fill Level Sensors; Coolant Thermostat; and ESP Electronic Stability Program Control Unit.

Additional eligibility notes:

• You may qualify if you owned or leased the vehicle — both purchasers and lessees are covered.
• You may not qualify if your vehicle is an electric vehicle — the HPP Warranty does not apply to EVs.
• You may not qualify if the repair or replacement is excluded from HPP Warranty coverage — for example, if Mercedes-Benz can demonstrate that abuse, neglect, or improper maintenance caused the need for the repair.
• You may not qualify if you already received goodwill, extended warranty coverage, or any other form of compensation for the same repair — the settlement prohibits double recovery.
• You may qualify for going-forward warranty coverage even if you did not pay out of pocket for a past repair — after the settlement’s effective date, Mercedes-Benz will cover 100% of diagnosis, repair, or replacement of all 14 subject parts within the seven-year/70,000-mile HPP period at authorized service centers.

How Much Can You Receive?

Class members who paid for a repair or replacement of a covered subject part after their vehicle’s four-year/50,000-mile warranty expired, but before the seven-year/70,000-mile warranty expired, can claim 50% reimbursement for their out-of-pocket costs — including parts, labor, and the associated diagnosis cost for that repair.

Class members who paid only for a diagnosis of a covered subject part during the same period — but did not proceed with a repair or replacement — can claim 100% reimbursement for their out-of-pocket diagnosis costs.

Here is a summary of payout tiers:

The payment amount to individual class members will vary based on the out-of-pocket costs paid and the supporting documentation provided. There is no cap on individual claims — your reimbursement equals the applicable percentage of your actual documented expenses.

How to File a Claim

Step 1 — Visit the official settlement website at HazdovacEmissionsWarrantySettlement.com to access the online claim form, or download and print the PDF claim form from the settlement website.

Step 2 — Gather all required documentation before starting your claim:

• An itemized repair order, invoice, or other documentation showing the specific subject part that was diagnosed, repaired, or replaced and the cost
• Proof of payment for the repair or diagnosis (such as a credit card statement, invoice showing zero balance, or receipt)
• Proof of vehicle ownership or lease at the time of the repair or diagnosis
• Proof of registration in a covered Section 177 state at the time of the repair or diagnosis

Step 3 — Confirm your vehicle’s mileage at the time of the repair falls within the four-year/50,000-mile to seven-year/70,000-mile HPP Warranty window.

Step 4 — Select your claim type: Qualified Repair (50% reimbursement) or Qualified Diagnosis (100% reimbursement).

Step 5 — Submit your completed claim form online at HazdovacEmissionsWarrantySettlement.com, or via email to [email protected], or by U.S. mail postmarked no later than May 15, 2026, to: Hazdovac v. MBUSA Settlement Administrator, P.O. Box 4387, Baton Rouge, LA 70821.

Step 6 — Save copies of your submitted claim form and all documentation. Contact the administrator at (1-844-459-3177) with any questions.

For repairs or diagnoses that occur after the notice date of March 16, 2026, but before the settlement’s Effective Date, you must submit a claim within 60 days of the service date.

Estimated time to complete: 10–15 minutes (depending on documentation availability).

Important Deadlines & Dates

Frequently Asked Questions

Do I need a lawyer to file a claim? 

No. The Court has appointed Jordan L. Lurie and Ari Y. Basser of Pomerantz LLP as class counsel to represent all class members. Attorneys’ fees and costs will be paid directly by Mercedes-Benz USA — you will not pay class counsel anything out of your settlement reimbursement. You can file your claim directly at HazdovacEmissionsWarrantySettlement.com without hiring your own attorney.

Is this settlement legitimate?

 Yes. The case, Hazdovac v. Mercedes-Benz USA, LLC et al., Case No. 3:20-CV-377 (N.D. Cal.), is pending before Chief Judge Richard Seeborg in the U.S. District Court for the Northern District of California. The settlement administrator is Postlethwaite & Netterville. Always use only the official website at HazdovacEmissionsWarrantySettlement.com — do not share personal or vehicle information with any unofficial website claiming to process your claim.

When will I receive my payment? 

The settlement administrator will issue payments within 30 days of the final decision regarding each individual claim. Unlike many settlements that distribute all payments at once after final approval, this settlement can process and pay claims on a rolling basis — meaning approved claims may receive payment before the June 25, 2026 Fairness Hearing.

What if I missed the claim deadline?

 The deadline for repairs and diagnoses that occurred before March 16, 2026, is May 15, 2026. Missing that date disqualifies you from receiving reimbursement for those past expenses. If you have a covered repair or diagnosis after March 16, 2026, but before the settlement’s Effective Date, you have 60 days from the service date to file. If you do not opt out by April 30, 2026, you will also release your right to sue Mercedes-Benz separately over these warranty claims.

Will this settlement payment affect my taxes? 

Settlement reimbursements for vehicle repair costs may be treated as a reduction of those expenses rather than income, depending on your tax situation. Consult a qualified tax professional for advice specific to your circumstances, particularly for larger reimbursements.

Is this the same as the $149.6 million Mercedes diesel emissions settlement?

 No. The Hazdovac settlement is a separate, unrelated class action covering 14 specific emissions warranty parts on model year 2015 and newer gasoline-powered Mercedes-Benz vehicles. The $149.6 million multistate settlement — announced by 50 attorneys general in December 2025 — concerns Mercedes-Benz diesel vehicles from 2008 to 2016 that allegedly contained software designed to cheat emissions tests. The two settlements involve entirely different vehicles, time periods, and legal claims.

What does “going-forward HPP coverage” mean for my vehicle? 

After the settlement’s Effective Date, Mercedes-Benz USA will provide 100% coverage for the diagnosis, repair, or replacement of all 14 subject parts at authorized Mercedes-Benz service centers, for any eligible vehicle still within the seven-year/70,000-mile HPP Warranty period. This means you do not need to file a future claim — simply bring your vehicle to an authorized service center, confirm the part is a subject part, and Mercedes must cover it at no cost to you.

How does this settlement compare to other automaker warranty defect cases?

 Emissions warranty and defective parts settlements follow a well-established pattern in automotive litigation. Owners of other luxury European vehicles facing similar out-of-warranty repair cost issues may find context useful — for example, the BMW transfer case class action addresses similar allegations that BMW failed to cover known defects within the warranty period. For a larger-scale example of how automotive defect settlements are structured when they reach final approval, the Hyundai class action lawsuit engine settlement offers a detailed comparison — including lifetime warranty provisions and reimbursement tiers similar to this Mercedes-Benz case.

Sources & References

• Official Settlement Website (Postlethwaite & Netterville): HazdovacEmissionsWarrantySettlement.com
• Official Settlement FAQ: HazdovacEmissionsWarrantySettlement.com/faqs
• Official Settlement Agreement (November 13, 2025): Settlement Agreement PDF
• PACER Docket — Hazdovac v. Mercedes-Benz USA, LLC, Case No. 3:20-CV-377 (N.D. Cal.): ecf.cand.uscourts.gov

Last Updated: March 11, 2026

Disclaimer: This article is for informational purposes only and does not constitute legal advice. Legal claims and outcomes depend on specific facts and applicable law. For advice regarding a particular situation, consult a qualified attorney.

About the Author

Sarah Klein, JD, is a licensed attorney and legal content strategist with over 12 years of experience across civil, criminal, family, and regulatory law. At All About Lawyer, she covers a wide range of legal topics — from high-profile lawsuits and courtroom stories to state traffic laws and everyday legal questions — all with a focus on accuracy, clarity, and public understanding.
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