SANTA MONICA, Calif. -

Very soon, TrueCar and AutoNation will no longer be partners.

The business relationship between the car-buying and selling platform and the nation’s largest publicly traded dealership group is ending July 31.

According to multiple news outlets, including Automotive News and the Wall Street Journal, AutoNation decided to part ways with TrueCar due to contract squabbles over how much consumer data to turn over.

In an interview with the Wall Street Journal, AutoNation CEO Mike Jackson was quoted as saying: “TrueCar generates about 3 percent of the 550,000 cars we sell annually, but they want all our customer information on every car we sell, and we just can’t agree to that. It is none of their business who our customers are.”

In a news released shared Thursday, TrueCar said that back in May, it “demanded  that AutoNation comply fully with these core principles in order to have continued access to the TrueCar platform,” referring to the three “core principals” it listed below in the news release:

Provide negotiation-free, guaranteed savings off MSRP for all vehicles.
Provide prompt and accurate inventory and sales data.
Deliver a transparent, professional, and hassle-free customer experience.

TrueCar argued in its statement that the dealer group “chose not to comply,” so the partnership is ending at the end of July.

“We have an unwavering and long-term focus on a transparent car-buying experience," said Scott Painter, TrueCar’s chief executive officer and founder. “We’re grateful for the years of cooperation we’ve enjoyed with AutoNation, but could not make an exception for them.”