Can I add a voucher to an existing booking?

You can apply a voucher or promotional code to a SIXT ride booking during checkout — either on the website or in the SIXT App — and the discount is applied to your fare straight away.

On the website

1. Start your booking and proceed to the Payment Details step.
2. Click 'Add Extras'.
3. Enter your voucher code in the field provided and click 'Apply'.
4. The discount is applied immediately to the total fare.

In the SIXT App

1. Enter your route and ride details.
2. Before selecting a vehicle class, tap 'Add Voucher'.
3. Select a code from your wallet or enter a new one.
4. The final price adjusts automatically once the code is submitted.

Conditions to be aware of

• Vouchers cannot be added to an existing booking — cancel the current ride and apply the code to a new one.
• If cancellation fees apply, the voucher will be used to cover them first.
• Only one voucher can be applied per booking unless stated otherwise.
• Vouchers are non-transferable and must be redeemed by the account holder.
• Each voucher is subject to its own terms, including expiry dates and eligible ride categories.
• Check that your voucher is valid for the selected ride category and location before applying it.

Still need help? Find our contact options below.

Whether your voucher is still usable depends on whether cancellation fees were charged.

If cancellation fees applied

Your voucher was used to cover those fees and is no longer available for future bookings.

If no cancellation fees were charged

Your voucher is still valid — you can apply it to your next SIXT hire.

Still need help? Find our contact options below.

It's not possible to add a voucher to an existing SIXT ride booking. To avoid cancellation fees, we recommend saving your voucher for your next booking instead.

Your options

• Use the voucher on your next SIXT ride booking — no cancellation needed
• Cancel your current booking and rebook with the voucher applied — check your booking for any applicable cancellation fees before doing so

Next step

Ready to use your voucher? Enter it at checkout when you make your next booking in the SIXT App or on the website.

Still need help? Find our contact options below.