I got this offer on my amex gold preferred & blue cash
Get a 1X $20 statement credit by using your enrolled Card to spend a total of $150+ directly with National Car Rental by 12/31/2017. Valid through US website, US mobile app or at participating locations in US/US Territories.
Enrollment limited. Offer valid for rentals made directly with National Car Rental through US website (nationalcar.com), US mobile app, US telephone reservation line, or at any participating location in the US and US territories. Rentals must be paid for between promotion start and end dates to qualify. Not valid on previously completed rentals. Excludes international websites and locations, General Aviation/FBO rentals, and rentals through third parties, agents, and affiliate sites that link to/from nationalcar.com. Standard rental qualifications apply. Reservations must be made 24 hours in advance.