Investors in TrueCar Inc. are resisting a bid by the Santa Monica-based car-pricing company’s directors to temporarily halt a Delaware derivative lawsuit over allegedly inflated stock prices while a federal panel mulls whether to consolidate shareholder claims into multidistrict litigation.

Plaintiffs in the Delaware matter argued this week that request for a stay was an unjustified  attempt to stymie the case, which accuses the firm’s leaders of failing to warn investors about changes to its co-branded car-selling website with USAA—a decision investors blamed for costing the company hundreds of millions of dollars in market capitalization last year.