For car rentals until the end of October, rental car company Hertz and airline loyalty program Miles&More have a special offer: While a car rental earns a measly 500 miles under regular circumstances, you can now get 15 Miles&More award miles per Euro spent on top.
The promotion runs until July 31, 2025 and is available when booking through the promotional site:

When booking, you must use the CDP
and Promotion Code 866315
. You can earn miles on multiple, consecutive rentals – the number of possible miles earned is not capped.211825
Conditions
The following terms and conditions apply:
- Booking period: Until July 31, 2025.
- Rental period: Until October 31, 2025.
- When booking, enter CDP
866315
and Promotion Code
– both codes are already applied when booking through the promotional page.211825
- Cannot be combined with other discount codes is not possible
- You must enter the Miles&More number during the booking process and show the (mobile) M&M card when picking up the car
- The offer only applies to Hertz rental stations globally
- The offer can be terminated at any time
Price Check
When booking through the Miles&More promotional page, you can get a week in a Midsize in Seattle for $286, so roughly €244 per week. Because there is no additional information about the price, we reckon you can earn 4,160 miles (500 + 244*15) with this offer. If booked directly on hertz.de, the regular rate with onsite payment is €218, so you’d actually save a little when booking with the code applied.

However, few people pay the regular price at Hertz, as there are numerous discount options. A more practical comparison is with the following CDPs
. For the flex rate, the prices are:
- €257 regular rate
- €208 w/CDP
795094
(Mastercard Gold) - €208 w/CDP
618583
(VISA Card) - €196 w/CDP
633306
(Amex Platinum)
Compared to these, you pay a surcharge of up to €40 for 3,660 bonus miles (you’d get 500 miles anyway). These come at a rate of 1 to 1.3 cpm (cents per mile). This is a reasonable value, but no incentive to book just to get miles.
If you are wondering where to apply these codes on Hertz’ website, it is possible right at the start of the booking process:

Cover Picture: © HERTZ
Comments (5)
How do you find these CDP codes more generally? Thanks for the very useful article.
They are usually from old promos that Hertz has run in the past, but continue to work afterwards
But the easiest is usually just to google for Hertz CDPs. You’ll usually land in some kind of travel forum and can verify those codes via reverse search. E.g. that landing page for the VISA promo:
https://www.hertz.ch/rentacar/misc/index.jsp?targetPage=hel_visa_classic_benefits_TnC.xml
I tried a few dozen codes in the past, and those mentioned here are the best that remained (when excluding those limited to workers of certain companies)
It is a terrible deal for me, for example if I rent a Peugeot 2008 from May 10th to 13th, the cost with my Amex CDP the cost is 101.99 EUR (public price is 119.99 EUR), with Miles & More is 225.29 EUR. There is a huge difference of 123.30 EUR compared to rate with Amex (113.30 EUR difference from public rate) for only 2,000 miles. It is a NO GO for me.
This being said, there are also problems while crediting points at Miles & More. For example, I rented an electric vehicle for 3 days 2 weeks ago with my own CDP, I was supposed to get 1,000 miles according to Miles & More Hertz partner page. I only got 500 miles like for a non electric vehicle. I sent a complaint, I still have not received any answer. It is not reliable.
With Flying Blue, you get 12 miles per 1 EUR spent at Hertz (event 13.5 miles with Amex AF-KLM Amex), it is clearly better and it always work fine.
Link not working
It is working for me. Maybe it’s because of some adblocker or something like that?