Certainly not to the level of the previous generation. But that may be due to production issues, not an issue with rental companies having the new Malibu in their fleets.The new 'bu is already on rental lots. I've seen at least one Enterprise labeled LS locally, maybe two (not sure if the white cars were the same car on different days, but seen in locations roughly 30 miles apart).
Oh yes, these exist. My dealer has a Bronze LTZ bought from an auto auction that was an ex rental turned in at 10k. Perfect shape, but a rental.The CarMax here in Nashville was selling a LTZ that supposedly use to be a rental car.