Unreported / Non-Citable
Background
Susan Gunaian was paralyzed in an October 11, 2019 rear-end collision while driving a Chevrolet Equinox on Interstate 5. Her seat reclined on impact and her spine struck a rear passenger's knees, causing paralysis. She sued General Motors, the dealership that sold her the Equinox, and the motorist who struck her. Two years later, she amended the pleading to name Magna Seating of America, Inc. and Magna Seating, Inc. as Doe defendants. Her spouse, Ararat Issayan, sued for loss of consortium. Magna manufactures seat foam and trim, which it combines with other components to fabricate completed seats supplied to GM.
Gunaian's experts opined that the seat's open perimeter frame design allowed the rear passenger's knees to intrude into the seatback pocket, placing a concentrated load on her back and spine that caused hyperextension and paralysis. Magna sought summary judgment, arguing it did not design the seat, merely followed GM's specifications, and that no evidence showed its foam was defective. The trial court summarily adjudicated Gunaian's claims, finding her experts did not identify defects in Magna's foam and that GM controlled the design. The court entered judgment for respondents, and Gunaian appealed.
The Court’s Holding
The Court of Appeal reversed the judgment and remanded with directions to enter an order denying Magna's motion for summary judgment. The court held that the consumer expectations test does not apply because the case involves complex technical issues requiring expert testimony about frame design, foam placement, barriers, and crashworthiness. A jury would not know intuitively whether car seats should have open perimeter frames, external barriers, or limits on rearward trajectory in a rear impact.
The court further held that Magna failed to carry its burden on summary judgment under the risk-benefit test. Magna's experts addressed only whether the seat foam was defect-free, not whether the overall seat design's benefits outweighed its risks or whether safer alternative designs were feasible. Magna also presented no admissible causation evidence. The court rejected Magna's argument that it could escape liability by blaming GM's specifications, explaining that strict liability attaches to all parties who participate in designing, assembling, and marketing a defective product, regardless of control over the defect's cause. Magna manufactured the completed seat by assembling components and exercised discretion over foam quantity. The component part defense does not apply because the seat itself is a finished product, not a fungible component transformed during vehicle assembly.
Key Takeaways
- A manufacturer that assembles components into a finished product and places it in the stream of commerce is subject to strict liability even if it followed another party's design specifications.
- The component part defense applies only when a supplier provides a non-defective component that is transformed into a different end product; a completed car seat is a stand-alone product, not a component.
- A defendant moving for summary judgment in a design defect case must present evidence addressing the risks and benefits of the product's design and the feasibility of safer alternatives, not merely claim compliance with specifications.
- The consumer expectations test does not apply when the alleged defect involves technical and mechanical details beyond ordinary consumers' everyday experience.
- Blaming a third party for causing the accident does not insulate a manufacturer from liability if a product defect caused or contributed to the plaintiff's injuries.
Why It Matters
This decision reinforces that strict products liability in California extends throughout the stream of commerce to all participants in bringing a defective product to market, regardless of contractual allocation of design responsibility. Component suppliers and assemblers cannot shield themselves from liability simply by pointing to the automaker's control over specifications. The court relied on Romine v. Johnson Controls, Inc. to hold that a completed car seat is a stand-alone product rather than a component part.
The ruling clarifies the burden on summary judgment in design defect cases: defendants must affirmatively address risk-benefit analysis and causation with admissible expert evidence, not merely attack the plaintiff's proof or claim compliance with industry standards. The decision also confirms that finished products like car seats are not 'components' eligible for the component part defense merely because they are installed in a larger product.