Ontario, CA Car Accident

Car Accident in Ontario. California law, local courts, and the deadlines that apply here.

Car accident claims follow California's pure comparative fault framework. The at-fault driver's auto liability insurer is the primary recovery source. California's 2025 minimum limits of $30,000/$60,000 apply; many serious injury cases exceed these minimums. Claims against the City of Ontario, Omnitrans, or San Bernardino County require a government tort claim within six months under Government Code section 945.4 — a deadline separate from the two-year personal injury SOL.

Written by Jayson Elliott, J.D.  ·  California-Licensed Attorney & Legal Writer Updated April 2026
Legal Information Notice

This page provides general legal information about car accident cases in Ontario, California. It is not legal advice. Consult a licensed California attorney for guidance specific to your case.

Car Accident in Ontario

Car accident claims follow California's pure comparative fault framework. The at-fault driver's auto liability insurer is the primary recovery source. California's 2025 minimum limits of $30,000/$60,000 apply; many serious injury cases exceed these minimums.

California Law That Applies

California's pure comparative fault system under Civil Code section 1714 applies to car accident cases in Ontario. Recovery is reduced proportionally by the claimant's fault percentage but is never fully barred. The statute of limitations for personal injury claims is two years from the date of the accident under Code of Civil Procedure section 335.1.

Claims against the City of Ontario, Omnitrans, or San Bernardino County require a government tort claim within six months of the incident under Government Code section 945.4. This shorter deadline runs concurrently with, and is separate from, the two-year personal injury SOL. Missing the six-month government tort claim deadline permanently bars claims against government entity defendants regardless of when the lawsuit is filed.

Courts and Procedures in Ontario

Car Accident personal injury claims from Ontario are filed in San Bernardino County Superior Court — Rancho Cucamonga Courthouse at 8303 Haven Ave, Rancho Cucamonga, CA 91730. This courthouse handles unlimited civil cases from Ontario and San Bernardino County. Personal injury cases in this court typically reach trial in 18–30 months from filing.

Primary Courthouse

San Bernardino County Superior Court — Rancho Cucamonga Courthouse

8303 Haven Ave, Rancho Cucamonga, CA 91730  ·  Unlimited Civil Division

Key Deadlines for Car Accident Claims in Ontario

Two years from the accident date to file suit against a private party under CCP section 335.1. Six months from the incident to file a government tort claim against the City of Ontario, Omnitrans, or San Bernardino County under Government Code section 945.4. Both deadlines run from the date of the accident, subject to the discovery rule and tolling exceptions.

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Find a Car Accident Attorney in Ontario

This page is educational. To find a licensed California attorney who handles car accident cases in the Ontario area, use these verified directories.