Sixt's main customer service number and what it covers

Sixt's primary customer service line in the United States is 1-888-749-8227. This number handles reservations, changes to existing bookings, questions about rates and vehicle availability, and general account inquiries. The line operates during business hours, which vary by season — typically 7 a.m. to 11 p.m. Eastern Time during peak travel periods and 8 a.m. to 8 p.m. during slower months.

When you call, have your reservation number ready if you're calling about an existing booking. If you're making a new reservation, you'll need your driver's license information, the pickup and return dates you want, and your preferred location. The system can usually quote you a rate over the phone and hold a reservation for 24 hours without a credit card.

Wait times vary significantly depending on the time of day and season. Early morning calls (before 9 a.m.) and weekday calls tend to be faster than evening or weekend calls. During major holidays or peak summer travel, expect longer hold times regardless of when you call.

Key Takeaways

  • Sixt's main U.S. customer service number is 1-888-749-8227, and it handles reservations, changes, and general questions during business hours.
  • Having your reservation number or driver's license information ready before you call will speed up the process.
  • If you need roadside information or have an emergency at a rental location, you should call the number on your rental agreement rather than the main customer service line.
  • Sixt also offers online reservation management and email support through their website, which can be faster for non-urgent changes or questions.
  • Location-specific numbers exist for airport rental counters and major city branches, and these are often faster for when ready pickup or return issues.

Reaching Sixt at airport locations

If you're picking up or returning a car at an airport, calling the specific airport location is usually faster than the main number. Major airports like Los Angeles (LAX), New York (JFK and Newark), Chicago (ORD), and Miami (MIA) have direct lines to their rental counters. You can find these numbers on your reservation confirmation email or by searching "Sixt [airport code]" online.

Airport counter staff can help with when ready issues — a vehicle that's not ready, a question about your contract before you drive off, or a problem with the return process. They can also sometimes adjust rates or add services on the spot if you're standing at the counter, whereas the main line may require a manager callback.

If you're returning a car after hours at an airport location, look for the after-hours return instructions on your rental agreement. Most airports have unmanned return lanes where you leave the keys and documents, but if you have questions about charges or damage, you'll need to call the location's daytime number the next business day.

What to do if you need roadside help or have an emergency

If your rental car breaks down, you get a flat tire, or you're locked out while driving, do not call the main customer service number. Instead, call the roadside information number printed on your rental agreement — this is usually a 24-hour line that dispatches help directly to your location. This number connects you to a towing service or roadside provider that Sixt contracts with, and they can reach you much faster than the main office.

If you've been in an accident or have damage to the vehicle, you should also use the emergency number on your agreement. Sixt has a claims process that requires you to report damage within a specific timeframe (usually 24 hours), and calling the right number ensures your report is logged correctly and sent to the right department.

For medical emergencies or safety threats while you're in the vehicle, call 911 first. Once you're safe, you can then contact Sixt to report what happened and get guidance on next steps with the rental.

Using Sixt's website and email instead of calling

For changes that aren't urgent — extending a rental, adding a driver, or asking about insurance options — Sixt's website often works faster than calling. You can log into your reservation using your confirmation number and make many changes yourself without waiting on hold. The website also shows real-time availability and pricing, so you can see when ready whether an extension is possible and what it will cost.

Sixt also offers email support through their website contact form. Email is slower than calling (typically 24 to 48 hours for a response), but it's useful if you have a detailed question or need to attach documents like a driver's license or insurance card. Email also creates a written record of your request, which can be helpful if there's a dispute later.

The Sixt mobile app lets you manage your reservation, unlock the car (at locations that support it), and report damage or issues without calling. If you're a frequent renter, downloading the app can save you time on future rentals.

International and non-U.S. Sixt locations

If you're renting from Sixt outside the United States, the 1-888 number will not work. Instead, contact the Sixt location in the country where you're renting. You can find country-specific numbers on Sixt's main website by selecting your country from the dropdown menu. Major European locations like Germany, the United Kingdom, and France have their own customer service lines.

If you booked an international rental through a U.S. travel agent or the U.S. Sixt website, you can still call 1-888-749-8227 to ask questions about your booking before you travel. However, once you arrive at the rental location, you'll need to work with the local Sixt office for pickup, changes, or problems.

What information to have ready before you call

Before calling Sixt, gather the documents and information that will help the agent help you faster. If you have an existing reservation, find your confirmation email — it contains your reservation number, which is the single most useful piece of information you can provide. If you're making a new reservation, have your driver's license ready, along with the dates and locations you need.

If you're calling about damage, an accident, or a billing question, have your rental agreement and any photos or documentation ready. If you're calling about insurance or adding coverage, have your personal auto insurance policy information available so the agent can explain what Sixt's coverage does and does not overlap with.

If you're calling from outside the United States or from a location where you don't have cell service, note that Sixt's main line does not accept collect calls. You'll need to use a calling card, a payphone with coins, or find a location with internet access to use the website instead.

Frequently Asked Questions

Will Sixt charge me to call their customer service line?

No. The 1-888 number is toll-free within the United States. If you're calling from outside the U.S., standard international rates explore — check with your phone provider before calling if you're abroad.

Can I make a reservation over the phone, or do I have to use the website?

Yes, you can make a full reservation over the phone by calling 1-888-749-8227. The agent will quote you a rate, hold the reservation for 24 hours, and email you a confirmation. You do not need a credit card to hold the reservation, but you will need one at pickup.

What if I'm calling about a one-way rental or a long-term lease?

The main customer service line handles both. One-way rentals and long-term leases have different pricing and policies, so mention this when you call so the agent routes you to the right department. These bookings sometimes take longer to process, so allow extra time if you're calling close to your pickup date.

How do I cancel a Sixt reservation by phone?

Call 1-888-749-8227 with your reservation number. The agent will cancel the booking and explain any cancellation fees based on how far in advance you're canceling and which rate type you booked. Cancellation policies vary, so ask the agent to confirm the refund amount before you hang up.

Can I add a second driver or change drivers over the phone?

Yes. Call the main number and provide your reservation number. The agent will add the new driver's information to your booking. There may be an additional daily fee for a second driver, depending on your location and rate. The new driver will need to present their license at pickup.