LOS ANGELES (AP) — At least two lawsuits have been filed in California over Volkswagen tampering with emissions testing on VW and Audi models to deceive regulators.

An Audi owner’s lawsuit filed Thursday in U.S. District Court seeks class-action status for all California residents who bought or leased a Volkswagen with a diesel engine or a diesel-powered Audi A3 between 2009 and 2015.

The lawsuit filed by dealer The Car Factory seeks damages over the loss of value of used Volkswagens. The suit says independent dealers are not getting the same protections or reimbursement as official Volkswagen dealers.

The suits are among several dozen filed across the U.S. following last week’s announcement by regulators that VW installed a component that switched to a clean driving mode during smog tests but reverted to higher emissions when testing was done.

Volkswagen of America Group says it can’t comment on pending litigation.