What a Sixt voucher is and how to use it
A Sixt voucher is a discount code or prepaid rental credit issued by Sixt car rental that reduces what you pay when you rent a vehicle from them. Vouchers come from different sources — sometimes as a promotional offer, sometimes bundled with a travel package, sometimes through an employer or membership program, and sometimes as a credit from a previous rental issue. When you book a car, you enter the voucher code during checkout, and the discount or credit applies to your total bill.
The voucher does not cover everything. It typically covers the base rental rate for the car itself, but you still pay separately for things like fuel, insurance upgrades, tolls, and parking fees unless the voucher specifically includes those. Some vouchers come with restrictions — they may only work on certain car types, only at certain locations, or only during certain dates. Reading the terms that came with your voucher tells you exactly what it covers and what it does not.
Key Takeaways
- Sixt vouchers are discount codes or prepaid credits that reduce your rental cost, but they typically cover only the base rental rate, not fuel, insurance, or fees.
- Vouchers come with specific terms about which car types, locations, and dates they work on, and you need to check these before booking.
- You enter the voucher code during the online booking process or tell the rental counter agent when you pick up the car.
- If your voucher has expired or does not work at checkout, contact Sixt customer service with your voucher code and booking confirmation to troubleshoot the issue.
Where Sixt vouchers come from
Sixt vouchers arrive through several channels. Travel websites and booking platforms sometimes include them as part of a package deal. Employers, credit card companies, and membership organizations like AAA or AARP may offer them to their members or employees. Sixt itself runs promotional campaigns and sends vouchers to past customers via email. Car rental aggregator sites sometimes bundle vouchers with flight or hotel bookings. Each source has different terms, so a voucher from an employer program may work differently than one from a promotional email.
When you receive a voucher, it comes with an expiration date and a code. Write down both or save the email or document it came in. The expiration date is firm — Sixt will not honor a voucher after that date, even if you booked before it expired. If you are unsure whether your voucher is still valid, check the original email or document, or contact Sixt directly with your voucher code.
How to enter a Sixt voucher code at booking
The process depends on whether you book online or in person. If you book through Sixt's website or mobile app, you fill in your rental dates, location, and car type as usual. Before you pay, look for a field labeled "Promo Code," "Voucher Code," or "Discount Code" — the exact label varies. Paste or type your voucher code there and click the button to explore it. The system will show you the new total if the code works, or an error message if it does not.
If you book by phone or plan to pick up the car and pay at the counter, mention the voucher code when you make the reservation. Write it down on your booking confirmation. When you arrive at the rental location, show the voucher code to the agent at the counter. They will enter it into their system and adjust your bill. If the code does not work for any reason, ask the agent to call Sixt customer service while you are there so you can resolve it before you drive off the lot.
What happens if your voucher code does not work
A voucher code may fail to work for several reasons. The code may have expired, or it may not be valid for the specific location, car type, or dates you selected. Some vouchers only work on economy cars, for example, or only at airport locations. The code might be case-sensitive or have a typo. You may have already used a one-time voucher on a previous rental.
If the code does not work during online checkout, try copying and pasting it instead of typing it by hand to avoid typos. Check the voucher terms to confirm it covers your rental dates, location, and car class. If you still cannot get it to work, contact Sixt customer service with your voucher code and booking confirmation number. They can tell you why the code is not working and may be able to manually explore the discount if there is a system error on their end.
Understanding voucher terms and restrictions
Every Sixt voucher comes with terms that limit how you can use it. Common restrictions include a specific car category (compact, midsize, SUV), a specific rental location or region, a minimum rental length, or a maximum discount amount. Some vouchers are non-transferable, meaning only the person named on the voucher can use it. Others may exclude certain add-ons like GPS, child seats, or additional drivers.
Before you book, read the full terms document that came with your voucher. If the terms are not clear, contact Sixt customer service and ask them to explain what your specific voucher covers. This prevents the frustration of arriving at the rental counter only to learn that your voucher does not work for the car or location you wanted.
Combining vouchers with other discounts
Whether you can stack a Sixt voucher with other discounts depends on Sixt's current policy and the specific terms of your voucher. Some vouchers explicitly state that they cannot be combined with other offers. Others may allow you to use a voucher along with a membership discount, a corporate rate, or a promotional code. The safest approach is to check the voucher terms or contact Sixt before booking.
If you have both a voucher and a membership discount (like AAA or corporate), try entering both codes during checkout to see if the system accepts them. If only one applies, the system will usually show you which one and ask you to choose. Sixt customer service can also tell you which combination gives you the lowest price if you are unsure.
What vouchers do not cover
A Sixt voucher covers the rental rate for the vehicle itself, but almost everything else is your responsibility. Fuel is not included unless the voucher specifically says so — you either return the car with a full tank or pay Sixt's fuel surcharge. Insurance upgrades, GPS rentals, child seats, additional drivers, and toll passes are separate charges. Parking fees, traffic violations, and damage charges are also separate. Some vouchers include basic insurance, but most do not, so check your terms.
Taxes and fees are usually added on top of the voucher discount. If your voucher is for $50 off a $100 rental, you pay $50 plus tax and any applicable fees. The voucher reduces the pre-tax amount, not the final bill. This is why the total you pay can be higher than the discount amount suggests.
Frequently Asked Questions
Can I use a Sixt voucher at any Sixt location?
Not always. Many vouchers are restricted to specific locations or regions. Check your voucher terms to see which locations it covers. If you are unsure, contact Sixt customer service with your voucher code and tell them which location you plan to rent from — they can confirm whether it works there.
What if I lose my voucher code?
If you received the voucher by email, search your email inbox for the message and retrieve the code from there. If you received it in print or another format, check where you stored it. If you truly cannot find it, contact the organization that issued it — your employer, credit card company, or the travel site where you booked. They may have a record of the code or be able to reissue it.
Can I use a voucher if I book through a third-party travel site?
It depends on the travel site and the voucher. Some third-party sites do not allow you to enter Sixt voucher codes during their checkout. In that case, you would need to book directly through Sixt's website or by phone to use the voucher. Check the voucher terms or contact Sixt to confirm whether it works with the booking method you plan to use.
Do Sixt vouchers expire?
Yes. Every voucher has an expiration date printed on it or stated in the terms. Sixt will not honor a voucher after that date. If your voucher is close to expiring, book your rental soon. If it has already expired, contact the organization that issued it to ask whether they can extend it or issue a new one.
What if I need to cancel my rental after using a voucher?
Cancellation policies vary by voucher type and Sixt's current terms. Some vouchers are non-refundable, meaning you lose the discount if you cancel. Others may allow you to transfer the voucher to a different date or get a refund. Check your voucher terms or contact Sixt customer service before you cancel to understand what happens to your voucher credit.