California Motor Vehicle Defect Lawyer

Someone caused the crash. But if a seatback collapsed, a roof crushed, an airbag exploded or never fired — the vehicle caused the injuries. California holds the company that built it strictly liable.

No recovery, no fee · Free consultation · Statewide California

Written and last reviewed by Adam C. Kocaj, Founding Attorney — CA Bar No. 321680, on , against California’s strict products liability doctrine (Greenman v. Yuba Power Products (1963) and its progeny), the Song-Beverly Consumer Warranty Act, and California appellate decisions through 2026.

Before anything else

Preserve the vehicle

Don’t repair it, release it, or let the insurer scrap it — the car IS the case

Got a recall notice?

Evidence, not the end

A recall doesn’t decide your claim either way — talk to us before the repair

Public bus, city vehicle, bad road?

6-month deadline

Government claims must be filed within six months (Gov. Code § 911.2)

Talk to a lawyer — free

Kocaj Law · (949) 807-4055

Adam Kocaj personally evaluates every vehicle defect inquiry

Key takeaways

  • California imposes strict liability on vehicle and parts manufacturers: prove the defect caused injury — you never have to prove negligence (Greenman v. Yuba Power Products (1963)).
  • Under the crashworthiness doctrine, the manufacturer pays for injuries the vehicle made worse even when someone else — including you — caused the crash (Soule v. GM (1994); Daly v. GM (1978)).
  • A recall is evidence, not a verdict — it doesn’t make the automaker automatically liable, and it doesn’t shield them either (Springmeyer v. Ford (1998)). No recall? You can still sue.
  • Preserve the vehicle and the part before any repair — including the recall repair. The physical part, plus the EDR “black box” data (Veh. Code § 9951), is the centerpiece of the case.
  • Deadlines: 2 years to sue (CCP § 335.1, with a discovery rule) — but only 6 months for the government claim when a public vehicle or dangerous public road is involved (Gov. Code § 911.2).

The law

What counts as a motor vehicle defect in California?

California recognizes three kinds of vehicle defects, and any one of them supports a strict liability claim. A manufacturing defect means your specific vehicle came off the line wrong — it deviates from the manufacturer’s own design or from other identical units, like a weld that doesn’t meet spec (Barker v. Lull Engineering (1978); McCabe v. American Honda (2002)). A design defect means the whole model line is unreasonably dangerous as designed — judged by two alternative tests from Barker: the product failed to perform as safely as an ordinary consumer would expect, or the design’s risks outweigh its benefits. Under that second test, once you show the design caused the injury, the burden shifts to the manufacturer to justify its design. A warning defect means the maker failed to adequately warn of a danger it knew or should have known about.

Since Greenman v. Yuba Power Products (1963), the rule has been simple and severe: a manufacturer is strictly liable when a product it put on the market proves to have a defect that injures a person. No negligence required. The point, as California courts put it, is that the cost of injuries from defective products should fall on the manufacturers who put them on the market — not on injured people powerless to protect themselves.

The hardware

What are the most common defective auto parts that cause injuries?

Every major vehicle system has produced California litigation. These are the failure modes we investigate first — several of them injure people in crashes someone else caused:

Airbags

Failure to deploy, inadvertent deployment, and overly aggressive deployment — including eye and face injuries from “bag slap” (Gonzalez v. Autoliv (2007)) and the Takata rupture defect.

Seatback collapse

Front seats that fail rearward in rear-end crashes — injuring the occupant and, catastrophically, children seated behind them.

Roof crush & rollover

Pillars and roofs too weak to survive a rollover; vehicles designed unstable enough to roll in the first place (Pannu v. Land Rover (2011); Dierks (1989)).

Seat belts & buckles

Webbing that breaks, buckles that unlatch in a crash, restraint geometry that fails the occupant (Endicott v. Nissan (1977)).

Door latches & ejection

Latches and locks that open under crash forces — turning a survivable collision into an ejection.

Fuel-fed fires

Fuel systems that leak and ignite after impact — a classic crashworthiness defect (Gherna v. Ford (1966)).

Tires

Tread separation and age-degraded tires that trigger loss of control and rollovers.

Brakes & missing safety options

Brake system failures (Tresham v. Ford (1969)) — and designs that omitted available protections like side airbags and safety canopies.

The doctrine that changes everything

What is “crashworthiness” — and why does it matter in your case?

Crashes are foreseeable. So California requires vehicles to be designed not just to avoid accidents, but to protect the people inside when accidents happen. That’s the crashworthiness doctrine: whatever caused the collision, the manufacturer is liable for the “enhanced injuries” — the harm that would not have occurred but for the vehicle’s defect (Soule v. General Motors (1994)). The collision and the injuries are analyzed separately: another driver may own the crash; the automaker owns the difference between the injuries you should have walked away with and the ones the defective vehicle actually inflicted.

Most misunderstood rule #1

You can be at fault for the crash — and still win the defect case

California’s comparative fault system applies to strict products liability (Daly v. General Motors (1978)): your share of fault reduces your recovery — it never bars it. So the driver who drifted off the road but was paralyzed because the roof crushed, or rear-ended someone but suffered a brain injury because the seatback collapsed, still has a case for the injuries the defect caused. Expert testimony isolates the “enhanced injuries” attributable to the vehicle from the baseline injuries of the crash itself. Don’t let an adjuster — or your own guilt — talk you out of a claim the California Supreme Court expressly preserved.

Recalls

Recalls, non-recalls, and the Takata airbags

Can you sue over a defect that was never recalled? Yes. A recall has never been a prerequisite to a California product liability claim — and the absence of one can itself support a failure-to-warn theory if the manufacturer knew of the danger. The proof tools are strong: prior similar incidents are admissible to show the manufacturer knew (Colombo v. BRP (2014)), and — unusual in the law — subsequent design changes are admissible in strict liability cases to help prove the earlier design was defective (Ault v. International Harvester (1974)).

Most misunderstood rule #2

A recall is evidence — not automatic liability, and not a shield

A recall notice is powerful proof that the manufacturer knew or should have known about the defect. But you still must prove the defect was a substantial factor in causing your injuries — and the manufacturer still must answer for injuries that happened before the recall or to owners who never received or acted on the notice. California courts refuse to let automakers hide behind their own recall letters: manufacturers know recall campaigns are widely disregarded, so an unrepaired vehicle is foreseeable, and whether ignoring a notice cuts off liability is a jury question, not a free pass (Springmeyer v. Ford (1998)).

The Takata airbag recall — can you still file a claim?

The Takata inflator defect — ammonium-nitrate inflators that can rupture and fire metal fragments at occupants — remains the largest auto safety recall in U.S. history, and injuries are still occurring in unrepaired vehicles today. Takata’s 2017 bankruptcy created a compensation fund, but the vehicle manufacturers that installed the inflators remain potentially liable under California’s chain-of-distribution rule. For a recent injury, the standard two-year clock applies; for older injuries, the discovery rule may help where the airbag’s role wasn’t reasonably apparent. If a deploying airbag caused shrapnel-type wounds, facial injuries, or worse — in any brand — have the vehicle and inflator preserved and get counsel immediately.

Defendants

Who is liable — the manufacturer, the dealer, or the repair shop?

Strict liability runs through the entire chain of distribution. We routinely name more than one:

PartyLiability ruleAuthority
Vehicle manufacturerStrictly liable for the whole vehicle and every component it integrates; the duty to deliver a defect-free product cannot be delegated to dealersGreenman (1963); Springmeyer (1998)
Component manufacturerStrictly liable for its defective part (airbag module, seatbelt, tire) — the “built-to-spec” defense fails where it helped integrate the partGonzalez v. Autoliv (2007); Taylor (2009)
New-car dealerIn the chain of distribution — can be strictly liable for defects in vehicles it sellsChain-of-distribution doctrine
Used-car dealerGenerally NOT strictly liable — unless it rebuilt or reconditioned the vehicle, or knew of the defect and concealed it (negligence/fraud)Arriaga (2008)
Repair shopLiable in negligence for faulty work; not strictly liable for the manufacturer’s defectsEndicott (1977)
Certified pre-owned programsReconditioning + new warranty can create manufacturer-like exposure and Song-Beverly warranty claimsArriaga; Civ. Code § 1790

Note on damages allocation: chain-of-distribution defendants are jointly liable for your economic damages, while non-economic damages are apportioned by fault under Proposition 51 (Romine v. Johnson Controls (2014)) — one more reason identifying every defendant matters.

The case within the case

What evidence proves a vehicle defect — and how do we tell defect from driver error?

The vehicle itself comes first. The physical part — its metallurgy, its failure mode, its deviation from spec — is the centerpiece of a defect case. Once the car is repaired, scrapped, auctioned, or “fixed” under a recall, that proof can be gone forever: in a March 2026 California appellate case, the repair shop discarded the recalled brake master cylinder during the recall repair, and the entire case had to be fought on circumstantial evidence (Soulliere v. Suzuki). Circumstantial proof can win (Gherna (1966)) — but the part in an evidence locker wins bigger and settles faster. We send preservation demands immediately and, where needed, buy the salvage before it disappears.

The EDR — your car’s black box — is the objective witness. It records speed, braking, throttle, and crash severity in the seconds around impact, retrievable with the owner’s consent or court order (Veh. Code § 9951). That data separates “defective part failed” from “driver error” with numbers instead of arguments — it shows whether you braked, how fast you actually went, and how violent the impact really was. Around it we layer recall records and technical service bulletins, prior similar incidents (Colombo), subsequent design changes (Ault), and industry-custom evidence, which the Supreme Court allows into the risk-utility balance (Kim v. Toyota (2018)).

Experts are not optional. Complex vehicle defect claims are judged under the risk-utility test, which runs on expert proof (Soule (1994); Harcourt v. Tesla (2026)) — accident reconstructionists, automotive engineers, biomechanical experts, metallurgists. That’s also why the “should I accept the recall repair first?” answer is: document and preserve before anyone touches the car. The repair doesn’t waive your claim for past injuries — but it can destroy the proof of it.

Time limits

What is the statute of limitations for a vehicle defect injury claim?

Two years from the injury (CCP § 335.1) for the personal-injury claim — strict liability, negligence, and failure to warn alike — with the discovery rule where a latent defect’s role wasn’t reasonably apparent, tolling for minors (CCP § 352), and two years from death for wrongful-death claims.

Two different laws

Vehicle defect injury claim vs. California Lemon Law — which one do you have?

Competitors conflate these constantly, and the mix-up costs injured people real money. The Lemon Law (Song-Beverly Consumer Warranty Act, Civ. Code §§ 1790–1795.8) makes the manufacturer buy back or replace a warranted vehicle it can’t fix — it’s about the car. A product liability claim compensates the person the defective car hurt. If a defect both made your car a lemon and injured you, you can pursue both at once.

Lemon Law (Song-Beverly)Product liability (injury claim)
GoalRepurchase or replacement of the vehicle, plus incidental damages, civil penalties in some cases, and attorney’s feesCompensation for personal injury — medical care, lost earning capacity, pain and suffering, punitive damages
Who filesThe buyer/lessee of a warranted (typically new) vehicle that can’t be conformed to warranty after reasonable repair attempts (18-month/18,000-mile presumption, Civ. Code § 1793.22)Anyone injured by the defect — driver, passenger, even a bystander; no warranty or purchase required
Vehicles coveredPrimarily new vehicles under express warranty (protections are unwaivable — Kim v. Airstream (2025))Any vehicle — new, used, or certified pre-owned
Damages for injuriesNo — warranty remedies onlyYes — the full measure of tort damages
DeadlineGenerally four years (warranty claims), with tightening procedural rules — act early2 years (CCP § 335.1); 6-month government claim where a public entity is involved

If you searched “lemon law” because a defect hurt someone, you’re likely in the wrong doctrine — and leaving the larger claim on the table. Bring us the facts; we’ll route both claims correctly.

Value

What is a motor vehicle defect case worth — and what can you recover?

Defect cases are the heavyweight division of injury law: corporate defendants, national counsel, and multi-expert proof — which is exactly why they produce some of California’s largest recoveries when the injuries are catastrophic. Recoverable damages include all economic losses (past and future medical care and life-care planning, lost earnings and earning capacity, household services), non-economic damages (pain, suffering, loss of enjoyment — uncapped in standard product cases), a spouse’s loss of consortium, and — the category that changes verdicts — punitive damages where the manufacturer knew of the defect and concealed it or consciously chose profits over safety (Civ. Code § 3294; the tradition running from Grimshaw v. Ford, the Pinto fuel-fire case). No honest “average” exists: value turns on injury severity, the strength of the defect and causation proof, the enhanced-injury analysis, venue, and the defendants in the chain. What we can promise is the honest version after we’ve seen the vehicle, the records, and the data — free.

Why contingency matters here more than anywhere: these cases demand six-figure expert workups — reconstruction, engineering, biomechanics, metallurgy. We advance every cost and are paid only from the recovery, so an injured family litigates on equal footing with an automaker. No recovery, no fee.

FAQ

California vehicle defects: your questions, answered

What counts as a motor vehicle defect?

Any of three things: a manufacturing defect (your specific vehicle deviated from its intended design — a bad weld, a flawed part), a design defect (the whole model line is unreasonably dangerous under the consumer-expectations or risk-utility tests of Barker v. Lull), or a warning defect (the maker failed to warn of a known or knowable danger). Defects arise in any system — steering, brakes, fuel, airbags, seatbelts, tires, roof structure, door latches, electronics — and must be a substantial factor in causing the injury.

What is the difference between a manufacturing defect and a design defect in a car?

A manufacturing defect means your car was built wrong — it differs from the manufacturer’s own specs or from identical units (McCabe v. American Honda (2002)). A design defect means the car was built exactly as intended, but the design itself is unsafe — judged by whether it failed ordinary consumers’ safety expectations or whether its risks outweigh its benefits, with the burden shifting to the manufacturer on the second test (Barker (1978)). Manufacturing claims attack one vehicle; design claims attack the whole model line.

What is “crashworthiness” and why does it matter in a car accident case?

Crashworthiness is the vehicle’s duty to protect occupants in a foreseeable crash — whatever caused the crash. Under Soule v. GM (1994), the manufacturer is liable for “enhanced injuries” that wouldn’t have occurred but for a defect: the roof that crushed, the airbag that didn’t fire, the seatback that collapsed. It matters because it adds a deep-pocket defendant to an ordinary accident case — and preserves your claim even when the at-fault driver’s insurance is nowhere near your damages.

What are the most common defective auto parts that cause injuries?

Airbags (non-deployment, inadvertent or overly aggressive deployment, Takata ruptures), seatback collapse in rear-end crashes, roof crush and rollover instability, seatbelt and buckle failures, door-latch failures causing ejection, post-collision fuel-fed fires, tire tread separation, and brake failures — plus designs that omitted available safety options like side airbags. Each has established California case law behind it, from Gonzalez v. Autoliv (airbags) to Pannu v. Land Rover (rollover).

How do I know if a defective part caused my crash instead of driver error?

You usually can’t know from the driver’s seat — the proof comes from the vehicle. The EDR “black box” records speed, braking, and throttle in the seconds before impact (retrievable with owner consent or court order, Veh. Code § 9951), and accident reconstruction plus component inspection separates mechanical failure from human error (Pannu (2011)). Clues worth acting on: the car behaved strangely before the crash, a recall exists for your make and model, the damage doesn’t match a “normal” crash, or the injuries are far worse than the collision should have produced. Preserve the vehicle and let experts answer it.

What is the Takata airbag recall and can I still file a claim?

The largest auto recall in U.S. history: Takata inflators can rupture and propel metal fragments into occupants. Injuries are still happening in unrepaired vehicles. Takata’s 2017 bankruptcy created a compensation fund, but the automakers that installed the inflators remain potentially liable under California’s chain-of-distribution rule. A recent injury sits comfortably within the two-year deadline; older injuries may be saved by the discovery rule where the airbag’s role wasn’t reasonably apparent. Preserve the vehicle and inflator and get advice now.

Who is liable when a defective car part causes an accident — the manufacturer, the dealer, or the repair shop?

Potentially all of them, differently: the vehicle manufacturer is strictly liable and can’t delegate safety to dealers (Springmeyer); the component maker is strictly liable for its part (Gonzalez); new-car dealers sit in the chain of distribution; used-car dealers generally are not strictly liable unless they rebuilt the vehicle or concealed a known defect (Arriaga); repair shops answer in negligence for bad work. We name every viable defendant because economic damages are joint among chain defendants while non-economic damages are apportioned (Prop 51).

Can I sue a car manufacturer for a defect that was never recalled?

Yes — a recall has never been a prerequisite. You can sue on any defect theory regardless of recall status, and the absence of a recall can even support failure-to-warn if the maker knew of the danger. California’s proof rules favor you: prior similar incidents show notice (Colombo (2014)), subsequent design changes are admissible in strict liability (Ault (1974)), and under the risk-utility test the manufacturer must justify its design once you connect it to the injury (Barker).

What if I was partly at fault for the crash but the defect made my injuries worse?

You still have a case. Comparative fault applies to strict products liability (Daly v. GM (1978)): your percentage of fault reduces the recovery but never bars it, and the manufacturer remains liable for the enhanced injuries its defect caused (Soule). The driver who caused a spinout but was catastrophically hurt because the roof crushed or the seatback failed has a live claim for the difference between the injuries the crash should have caused and the ones the defect inflicted.

Does a recall mean the automaker is automatically liable for my injuries?

No — and it doesn’t shield them either. A recall is strong evidence the manufacturer knew of the defect, but you must still prove that defect substantially caused your injuries. Flip side: the manufacturer stays on the hook for injuries before the recall completed and for owners who never received or acted on the notice — courts recognize recall campaigns are widely ignored, and whether ignoring one cuts off liability is a jury question (Springmeyer v. Ford (1998)).

Can I sue for a defect in a used or certified pre-owned vehicle?

Yes. The original manufacturer remains strictly liable for defects that existed at manufacture no matter how many times the vehicle resold. The used-car dealer generally is not strictly liable (Arriaga (2008)) — unless it rebuilt or reconditioned the vehicle, or knew of and concealed the defect (negligence/fraud). Certified pre-owned programs add wrinkles: reconditioning plus a new warranty can create manufacturer-like exposure and Song-Beverly warranty claims on top.

What is California’s “strict product liability” rule for defective vehicles?

From Greenman v. Yuba Power Products (1963): a manufacturer is strictly liable in tort when a product it places on the market proves to have a defect that causes injury — no proof of negligence, no privity of contract required. You prove the defendant made or sold the product, the product was defective (manufacturing, design, or warning), you used it in a reasonably foreseeable way, and the defect substantially caused your harm. The doctrine exists to put injury costs on manufacturers rather than on the injured.

What is the statute of limitations for a vehicle defect injury claim in California?

Two years from the injury (CCP § 335.1), extended by the discovery rule where a latent defect’s role wasn’t reasonably apparent, tolled for minors (CCP § 352), and running from death in wrongful-death cases. The exception that kills cases: any public-entity involvement — transit bus, police vehicle, school bus, dangerous public road — requires a written government claim within six months (Gov. Code § 911.2) before any lawsuit (§ 945.4).

What evidence do I need to prove a vehicle defect caused my injuries?

In rough order: the preserved vehicle and defective part (the centerpiece — never repair, release, or scrap before inspection); the EDR black-box data (Veh. Code § 9951); recall records and technical service bulletins; prior similar incidents (Colombo); subsequent design changes (Ault); photos, scene evidence, and medical records tying the injuries to the failure; and expert analysis — reconstruction, engineering, biomechanics, metallurgy. A 2026 case where the repair shop discarded the recalled part mid-litigation (Soulliere v. Suzuki) shows exactly why preservation comes first.

How is a vehicle defect case different from a California Lemon Law claim?

The Lemon Law (Song-Beverly Act) is a warranty remedy about the car: repurchase or replacement, incidental damages, and fees when a warranted vehicle can’t be fixed after reasonable attempts. A product liability claim is a tort remedy about the person: full injury damages, from any vehicle — new, used, or CPO — with no warranty required. They’re not exclusive: one defect can support both a buyback and an injury claim, pursued simultaneously. If someone was hurt, the injury claim is almost always the larger one.

Do I need an expert witness to prove the defect?

As a practical matter, yes. Complex vehicle defect cases are judged under the risk-utility test, which runs on expert proof of feasibility, cost, and alternative designs (Soule (1994); Barker; reaffirmed for modern vehicles in Harcourt v. Tesla (2026)), and causation in safety-system failures normally requires expert testimony (Endicott). Typical teams include accident reconstructionists, automotive engineers, biomechanical experts, and metallurgists. We retain genuinely experienced auto-products experts early — identifying the defect correctly at the start is what separates real cases from expensive dead ends.

Should I accept the manufacturer’s recall repair before talking to a lawyer?

Talk to the lawyer first. The recall repair typically removes the defective part and returns it to the manufacturer or destroys it — potentially erasing the best evidence of what injured you. Accepting the repair doesn’t waive your claim for past injuries, but it can gut the proof: in Soulliere v. Suzuki (2026), the shop discarded the recalled brake cylinder during the repair and the case had to be fought on circumstantial evidence. Sequence it: document, photograph, preserve (or let us) — then repair the car.

How much is a motor vehicle defect case worth?

There’s no honest average — these cases run from six figures to California’s largest verdicts, because value tracks injury severity, the strength of the defect and enhanced-injury proof, the EDR and physical evidence, venue, and the chain of defendants and their coverage. What is predictable: catastrophic injuries plus a well-proven defect against a manufacturer produce the deepest recoveries in injury law, and punitive exposure for concealment moves settlement value dramatically. We’ll give you a case-specific range, free, after seeing the vehicle and records.

What damages can I recover in a defective auto part lawsuit?

Economic damages: all past and future medical care (including a life care plan for catastrophic injuries), lost earnings and earning capacity, household services. Non-economic damages: pain, suffering, and loss of enjoyment — uncapped in standard product cases — plus a spouse’s loss of consortium. And punitive damages where the manufacturer knew and concealed the defect or consciously traded safety for profit (Civ. Code § 3294; the Grimshaw v. Ford tradition). Chain defendants share economic damages jointly; non-economic damages are apportioned by fault.

How much does a vehicle defect lawyer cost?

Nothing up front and nothing unless we recover — contingency representation with a free consultation. That matters more here than anywhere: defect cases demand six-figure expert workups, which we advance and recover only from the result. It’s how an injured family litigates on equal footing with an automaker’s national defense firm.

What should I do with the vehicle right now?

Keep it — unrepaired, unsold, unreleased. Tell your insurer in writing not to scrap or auction it; if it’s been totaled, we can often buy the salvage to preserve it. Photograph everything: the vehicle, the failed component, the interior, your injuries. Don’t authorize the recall repair or any teardown until the defect is documented and the part secured. The single most common way strong defect cases die is the car disappearing in the first two weeks.

My car was already repaired or sold at auction — is my case gone?

Not necessarily. Circumstantial evidence can carry a defect case (Gherna v. Ford (1966)): EDR data may survive, photos and repair records document the failure, the recall file and prior similar incidents prove the defect pattern, and sometimes the part or vehicle can still be tracked down through salvage channels. It’s harder — the 2026 Soulliere case was fought exactly this way — but hard is not impossible. Bring us what exists before more of it disappears.

Legal references on this page

  • CCP §§ 335.1, 352 · Gov. Code §§ 911.2, 945.4 · Veh. Code § 9951 · Civ. Code §§ 1790–1795.8, 3294 · Evid. Code §§ 720, 801
  • Greenman v. Yuba Power Products (1963) · Gherna v. Ford (1966) · Ault v. International Harvester (1974) · Endicott v. Nissan (1977)
  • Barker v. Lull Engineering (1978) · Daly v. General Motors (1978) · Dierks v. Mitsubishi (1989) · Soule v. General Motors (1994)
  • Springmeyer v. Ford (1998) · McCabe v. American Honda (2002) · Gonzalez v. Autoliv (2007) · Arriaga v. CitiCapital (2008)
  • Pannu v. Land Rover (2011) · Romine v. Johnson Controls (2014) · Colombo v. BRP (2014) · Kim v. Toyota (2018)
  • Kim v. Airstream (2025) · Harcourt v. Tesla (2026) · Soulliere v. Suzuki (2026, unpub.) · Grimshaw v. Ford (1981)

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