 And the company has reportedly told dealers they won't all have their services restored until after June 30th. If they're back up and running soon, sales could quickly make up for lost ground in July, J.D. Power reports. Until the hack, it had been a fairly stable year for car sales. Another forecaster, Cox Automotive, expects new vehicle sales will rise about 3 percent in the first half of 2023. That's thanks to lower prices and more incentive offers, though Cox says high interest rates may be holding back some buyers. I'm Henry App for Marketplace.