When on holiday in Giessen, Germany, make it enjoyable by using reliable car hire services from Sixt. All your needs are catered for by the dependable vehicles. There are a wide variety of convertibles, sports cars, 4x4's, economical cars and vans to choose from. You can opt for additional drivers and LDW insurance at reasonable prices. You can hire a car online and get a discount or visit the stations. If you are flying to Frankfurt Airport, you can arrange to have a car waiting upon arrival.