Owned vehicles bought from both groups, so a comparison members keep requesting. Penske Automotive store (premium brand): the service department is the product — loaners, accurate estimates, manufacturer CPO honored without argument. Lithia store and their Driveway online channel: the purchase itself was the smooth part, including vehicle shipping to my county; after-sale service quality tracked the individual store more than the corporate banner. Both are established public companies; the paperwork was clean in both cases. Read the CPO brand terms at Penske-type stores and the delivery/return dates on remote Lithia purchases.