Not sure if they check whether the card is a Visa while paying at the counter post booking. In that case you can use the CDP and pay with Amex to combine with this deal
Valid until 31 Dec 2019
10% off
For rentals worldwide.
Applicable for all standard car groups (excludes Hertz Collections)
Minimum 1 day rental
10% off + Free One Car Class Upgrade
For rentals in Australia, New Zealand, United States, Canada, Europe and Asia
Minimum 5 days rental
10% off + One Free Day Rental
For rentals in Australia, New Zealand, United States, Canada, Europe and Asia
Minimum 6 days rental
** Applicable only to Visa cards issued in Australia, Bangladesh, Bhutan, Brunei, Cambodia, China, Hong Kong, Federal Republic of Nepal, India, Indonesia, Lao PDR, Macau, Malaysia, Mongolia, Myanmar, New Zealand, Pakistan, Philippines, Singapore, South Korea, Sri Lanka, Taiwan, Thailand and Vietnam (except for HERTZ Gold Plus Rewards membership)
CAR rentals. My housing situation isn't 10% less.