You do have to enter info like kilometres driven if you are claiming expenses other than CCA. If you have no additions/dispositions during the year, then you don’t really have to put in your CCA information.
As for why your refund is higher without CCA – did you dispose of a vehicle? Sometimes, when you sell an asset, you can end up with a CCA recapture, which means the remaining balance gets added to your income. If that’s not the case, please contact our phone support for more assistance. They can use Screen Look to view your return and help you figure out what is going on. You can get the right number to contact our phone support team using the form on this page: https://support.turbotax.intuit.ca/contact/
