After untold rentals with (I thought) few upgrades, the light came on. I have only counted premium, luxury and SUVs as upgrades.

I use ITN.net/my_company_name_here to make all my travel arrangements. Avis is the only car rental option unless I want to be scolded for bending/breaking the rules. Unfortunately, the car group choices I am presented do not exactly match the Avis car groups. I have always selected "standard". The first time, I thought maybe I was going to get a manual transmission - turns out this translates to group D - full size 2 door. I always wondered why it was usually the same price as "full size". So, all along Avis locations have been upgrading me to class E - full size 4 door (a technical upgrade but in reality a disappointment).

Somewhere recently ezmonee posted a list of car classes which made me go back and compare reservations to receipts. Lo and behold, most of my rentals have been upgrades.

I just booked my trips for next month and picked "full size" cars. I fully expect to be upgraded to class G vehicles. Hurray for ezmonee! Hurray for Avis!

Now let's see if they can get the price right.

there ya go. You should start seeing premium more often now.

Thanks for the tip!