General Motors was hit with a $102.6 million verdict in California on Tuesday in a class-action trial over allegedly faulty piston rings.

A federal jury, which deliberated for two days in San Francisco, awarded the verdict in a rare class-action trial focused on GM consumers in California, Idaho and North Carolina, who owned its trucks and SUVs manufactured from 2011 to 2014. Plaintiffs in those three states alleged that GM knowingly sold vehicles with defective piston rings that caused excessive oil consumption, resulting in premature engine breakdowns.