A FlyerTalk Posting Legend
Join Date: Jul 2002
Location: MCI
Programs: AA Gold 1MM, AS MVP, UA Silver, WN A-List, Marriott LT Titanium, HH Diamond
Posts: 53,002
I received a Hertz offer that earns you 500 bonus Skymiles for using these codes:
CDP - 165385, PC - 932875.
Of course, use the same CDP with PC 932551, and you get $25 off, so I'm not sure many people take advantage of the bonus miles.
For my rentals, I have found that the best approach is to use the CDP/PC codes that achieve the best dollars-off or free-day discounts and take either Marriott Rewards or Hertz #1 Awards (ZE1) points for the rental. I've given up on gathering air miles from car rentals.