When I bought my car (2019) I did a fair bit of research on every car that caught my attention. Nearly all had more owners than I'd have wished for a 'regular' car. Typically each user was adding just 1500 miles before moving it on. Yet almost all had incredibly low mileages for their age too. Given that my highly regarded indy (RBM Hampshire) reckons that an annual oil change regardless of mileage is worthwhile AND the BMW service indicator system doesnt nag low mileage users' I'd be more inclined to worry about whether it got a service every year than whether it changed hands every year.