Do my National rentals count toward Enterprise Plus tier status?

Yes, any qualifying National Car Rental transaction that you complete using Enterprise Plus as your preferred Frequent Traveller Earning Partner will count toward your Enterprise Plus tier status. Just be sure to visit your Emerald Club profile and set your award selection to Frequent Traveller Credits. Select Enterprise Plus from the drop down for Frequent Traveller Programs and enter your Enterprise Plus number in the field directly to the right.