http://www.carrentalsavers.com/sixt.html At the above site I found this: NEW! SIXT USA Coupon, waive the underage fee for renters 21 and older on most vehicles. Valid at US Sixt rental locations excluding Tampa, Myrtle Beach and Charlotte. Valid on most cars (excluding Premium and Luxury cars), Mini Vans, Compact and Intermediate SUV's. If you do go to this site, take time to look around. There are coupons and discount codes for most of the major companies. Good Luck!