It seems perfectly normal to me
With my car if I hear the fans on after I turn it off I know it’s time to take it for a blast on the bypass near me , but I normally take it for a good spin every Friday after work as I finish early and the motorway is only 5 mins from me
It the same with our brand new work vans, one had only 159 miles on clock and fans kept staying on when off, but once’s it’s been for a good drive they are fine