Scope 1 emissions GHG inventory and target boundary

In setting up our target scope for Scope 1 emissions, we are uncertain about the Scope 1 category ‘company owner- or controlled vehicle fleet’. These include the emissions from employee commuting and business travel but as employees also use pool cars for private occasions we were wondering whether emissions associated with private kilometers should also be included in our Scope 1 target boundary?
Thanks a lot for your feedback!

Kind regards,