Rentalcars.com is owned by Priceline but they don't support coupons and discount codes. You may be thinking about
Airportrentalcars.com which is also owned by Priceline. You can enter coupons and discount codes directly into Priceline's website at
this page and we've got a list of coupons
on our website here.
All of that said, your best bet is to just use the link below to put in a request at AutoSlash. Instead of wasting your time searching for and trying different coupons and discount codes, our system can figure out the best codes for any given rental in a few minutes and email you with links to book it.