I could be wrong but I thought if there was any work performed by the dealer it would be showing on the CarFax. Does the CarFax have any information about maybe this car being a ‘fleet car’; I would imagine if any of the previous owners took it bc of issues - that would show on the CarFax.
Regardless I think you’ll be fine - I think there are few reasons why the mileage and owners - I feel the Z is a car that is balanced but its not a stop light monster like a V8 American Muscle like the Mustang or Camaro and while I have no qualms about daily driving mine - its not a good family car (for obvious reasons). For instance I got my car with 4700 miles in 2018 and couldn’t understand why someone would get rid of it; but I have had zero issues with it. Regardless if you are really concerned - maybe take it in for an inspection to see if there is anything wearing prematuring but again - I think you’ll be fine.
Soo….post some pics of the new ride