Kia and Hyundai are facing renewed legal pressure in the United States after the Ninth Circuit Court of Appeals ruled that insurance companies can pursue claims against the South Korean automakers in California federal court. The decision reopens litigation seeking reimbursement for more than $1 billion in theft and attempted-theft losses, creating another potential financial liability tied to a wave of vehicle thefts that spread across the U.S. after 2020.

Appeals Court Reopens the Insurance Claims

The Ninth Circuit ruled that Hyundai Motor Co. and Kia Corp., along with their U.S. subsidiaries, can be subject to personal jurisdiction in California. The insurers argue that certain vehicles were defectively designed because they lacked engine immobilizers, leaving them especially vulnerable to theft.

The appeals court reversed an earlier decision by U.S. District Judge James V. Selna, who had dismissed the insurance complaint after finding that the California court lacked jurisdiction over the foreign automakers. The appellate ruling sends the case back to federal court and allows the insurers’ claims to proceed.

The insurers say they have already paid more than $1 billion in claims and related costs involving thefts and attempted thefts of affected vehicles. Around 200 insurance companies are pursuing the litigation, seeking reimbursement from the manufacturers.

The Anti-Theft Technology Became a Major Legal Issue

The dispute focuses on the absence of engine immobilizers in certain Hyundai and Kia models from the 2011–2022 model years. An immobilizer prevents a vehicle from starting unless an authorized key is present and had become a widespread feature across the auto industry.

The issue gained national attention after social-media videos popularized a method for stealing certain vehicles using relatively simple tools. The so-called Kia Boyz trend spread widely in 2020 and contributed to a sharp increase in thefts of affected models across the country.

The Ninth Circuit said the automakers had purposefully directed the vehicles to California. More than 70% of Hyundai and Kia shipments to the United States passed through California ports, according to the appellate court, strengthening the basis for jurisdiction in the state.

Legal Exposure Extends Beyond the Current Case

The new ruling comes after Hyundai and Kia have already faced substantial costs related to the theft issue. The automakers previously agreed to a $145 million class-action settlement involving vehicle owners, while a separate $9 million case brought by state and local governments was also resolved.

The latest litigation could therefore add another layer of financial exposure. Beyond potential payouts, the companies face questions over legal expenses, insurance relationships and the broader costs associated with repairing the reputation of models that became closely associated with vehicle theft.

Investors will now be watching how the insurers’ claims develop in federal court and whether the automakers seek further appeals or settlement discussions. The financial impact will depend on the number of claims ultimately recognized and the damages awarded or negotiated. The case also illustrates how a relatively inexpensive design decision involving anti-theft technology can evolve into a multibillion-dollar legal and reputational issue when combined with widespread vehicle deployment and a major shift in criminal behavior.