All car rental companies, including National, are changing the number of airlines miles they will award. Right now it is a little confusing because the dates at which the changes are happening vary among the car rental companies, and even within the car rental companies the date of change varies for different airlines. I make it a point these days to check the number of miles that will be awarded when I make the reservation.

InsideFlyer had a nice article recently detailing these changes.

This year I had received a letter from Alamo when they discontinued their True Blue program. The letter stressed how they were sticking with 500 miles while other car rental companies were cutting down. Unfortunately they are cutting down as well.