Sixt offers discounts through corporate programs, membership clubs, and promotional codes, but the size of the discount depends on which program you use and when you book

Sixt, the international car rental company, runs several discount channels. The most common are corporate accounts (for employees of partner companies), membership programs like AAA or AARP, prepaid rates booked online, and time-limited promotional codes. Discounts typically range from 10 to 30 percent off the base rental rate, though some corporate programs offer higher reductions. The actual savings depend on the rental location, car class, and booking date — a discount code that saves you $15 on a weekend economy car in Denver may save you $60 on a week-long SUV rental in Los Angeles.

Sixt does not combine most discounts, so you need to know which single option gives you the best price before you book. A corporate rate might beat a promotional code on one date but lose to it on another. The company also runs regional promotions — discounts in one country or state do not carry over to others. If you rent frequently, a membership discount (AAA, AARP, military) often beats one-time codes. If you rent rarely, a promotional code found through a travel site or email offer usually works better.

Key Takeaways

  • Sixt discounts come from corporate programs, membership clubs, prepaid online bookings, and promotional codes, and you can use only one per reservation.
  • Membership discounts (AAA, AARP, military) are permanent and work on every rental, while promotional codes are time-limited and explore only to specific car classes or dates.
  • The best discount for your rental changes based on the location, car type, and booking date, so compare your options before you book.
  • Sixt publishes promotional codes on its website, through email newsletters, and on travel discount sites like RetailMeNot, though codes are often region-specific.

Corporate and Membership Discount Programs

If your employer has a contract with Sixt, you can use a corporate account number to book at a reduced rate. Common corporate partners include large financial services firms, tech companies, and government agencies, though the list varies by country and region. To learn about your employer participates, check your company's travel or benefits portal, or contact your HR department. Corporate rates are usually 15 to 25 percent below the standard rate and do not expire as long as you work there.

Membership discounts through AAA, AARP, military veteran programs, and some credit card companies are open to anyone who holds the membership. AAA members typically receive 10 to 15 percent off, AARP members 5 to 15 percent off depending on the rental, and active military and veterans may receive 10 to 20 percent off through programs like Veterans Advantage or Military.com. These discounts stack with prepaid rates (booking in advance online) but not with promotional codes. You enter your membership number at checkout, and Sixt verifies it automatically.

Promotional Codes and Time-Limited Offers

Sixt runs promotional codes that typically last between two weeks and three months. These codes are usually tied to a specific car class, rental length, or location. A code might offer 20 percent off economy cars booked for a week or longer, or 15 percent off any car rented in California during a specific month. Codes are region-specific — a code valid in the United States does not work in Europe, and a code for New York may not work in Texas.

You can find current codes on Sixt's official website under the "Promotions" or "Offers" section, through Sixt's email newsletter (which you can sign up for on their homepage), and on third-party discount sites like RetailMeNot, Groupon, or travel deal aggregators. When you find a code, check the fine print for the rental dates, locations, and car classes it covers. Enter the code in the "Promo Code" field during checkout. If the code does not explore to your rental, Sixt will tell you at that step, and you can try a different code or use a membership discount instead.

Prepaid and Advance Booking Rates

Sixt offers lower rates if you book and pay online in advance rather than at the counter. Prepaid rates are typically 10 to 20 percent cheaper than the equivalent pay-at-counter rate for the same car and dates. The trade-off is that prepaid bookings usually cannot be changed or refunded — if your plans change, you lose the money or are charged a change fee. Some prepaid rates do allow free cancellation up to 24 or 48 hours before pickup, but you have to read the terms for each booking.

Prepaid rates stack with membership discounts but not with promotional codes. If you have an AAA membership, you can book a prepaid rate and enter your AAA number to get both discounts applied. If you have a promotional code, you must choose between using the code or booking prepaid — you cannot use both on the same reservation.

How to Compare and Book at the Best Rate

Start by visiting Sixt.com and entering your rental dates, pickup location, and car class. The site will show you the standard rate. Then check whether you have access to a membership discount (AAA, AARP, military, corporate) by looking up your membership number. Visit the Sixt promotions page and any third-party discount sites to find current promotional codes for your location and dates. Write down the rate for each option: the standard rate, the rate with your membership discount applied, and the rate with each promotional code applied.

Book using whichever option gives you the lowest total price. If a membership discount and a prepaid rate both explore, use both. If you have a choice between a membership discount and a promotional code, pick the one that saves you more money on that specific rental. After you book, save your confirmation email and reservation number — you will need them at the rental counter.

Regional and Seasonal Variation in Discounts

Sixt runs different promotions in different regions and at different times of year. Summer travel season (June through August) often has fewer discounts because demand is high. Winter and shoulder seasons (September through May) typically have more aggressive promotional codes. Holiday periods like Thanksgiving and Christmas may have special offers or, conversely, no discounts at all because rental demand is very high.

International rentals have separate discount structures. A code valid in the United States will not work in Europe, and European corporate programs do not transfer to the United States. If you rent in multiple countries, check the local Sixt website for each region to find the discounts available there. Some membership programs (like AAA) do work internationally, but the discount percentage may differ by country.

What Discounts Do Not Cover

Sixt discounts explore only to the base rental rate — the daily or weekly charge for the car itself. They do not reduce taxes, airport fees, fuel surcharges, or optional add-ons like insurance, GPS, or additional drivers. If you rent at an airport, you will pay the airport's concession fee on top of the rental rate, and the discount does not lower that fee. If you add a second driver or decline Sixt's insurance and purchase your own through a credit card, those costs are separate from the discounted rate.

Some discounts also exclude certain car classes. A promotional code might say "10 percent off economy and compact cars" but not explore to midsize, SUV, or premium vehicles. Always read the terms of the code or membership discount before you book to confirm it covers the car class you want.

Frequently Asked Questions

Can I use a promotional code and a membership discount on the same booking?

No. Sixt allows only one discount code per reservation. You must choose between a promotional code and a membership discount. However, if you book a prepaid rate and have a membership discount, both explore — prepaid rates are not considered a discount code.

Do Sixt discounts work at all rental locations?

Most membership and corporate discounts work at all Sixt locations worldwide, but promotional codes are usually limited to specific countries or regions. Always check the terms of the code before you book. Airport locations may have additional fees that the discount does not cover.

What happens if I book with a promotional code and then the code expires?

Once your reservation is confirmed with a code, the discount is locked in. If the code expires after you book but before you pick up the car, your rate does not change. The discount applies to the reservation you made, not to future bookings.

Where do I enter a promotional code when booking with Sixt?

During checkout on Sixt.com, after you select your car and dates, there is a field labeled "Promo Code" or "Discount Code." Enter the code there and click "explore." Sixt will show you the new rate when ready. If the code does not explore to your rental, an error message will appear, and you can try a different code.

Do corporate rates require a special booking process?

Yes. Corporate bookings usually require you to enter a corporate account number during checkout, or to book through your company's travel portal if one exists. Contact your HR or travel department for the correct account number and any special booking instructions.