Where and how to return your Sixt rental at San Diego International
Sixt has a rental return location at San Diego International Airport (SAN), located in the off-airport facility shared with other rental companies. When you arrive to return your car, follow the signs for "Rental Car Return" — they direct you away from the terminal to a separate building where Sixt and other agencies operate.
The return process itself is straightforward: you drive to the Sixt return lot, park in a designated space, and a Sixt agent meets you at the vehicle. They inspect the car for damage, check the fuel level, and scan your driver's license and rental agreement. The entire process usually takes 10 to 15 minutes. You then walk or take a shuttle back to the terminal.
Sixt's airport location operates during extended hours to accommodate early morning and late evening flights, though the exact hours can shift seasonally. Check your rental agreement or call the location directly at the number on your paperwork to confirm hours on the day you plan to return.
Key Takeaways
- Sixt's San Diego airport return is in an off-airport facility, not at the terminal itself, so allow extra time to reach it.
- An agent inspects the car at return and checks fuel level on the spot, so return the vehicle with a full tank to avoid refueling charges.
- The return process takes 10 to 15 minutes, and you can then take a shuttle or walk back to the terminal depending on distance.
- Operating hours vary by season, so confirm the hours for your return date before you arrive at the airport.
Returning with a full tank versus Sixt's refueling option
Sixt offers two fuel options at return: you can fill the tank yourself before arriving at the lot, or you can return the car with any amount of fuel and let Sixt refuel it for you. If you choose the second option, Sixt charges a per-gallon rate that is typically higher than what you would pay at a gas station. The exact rate appears on your rental agreement.
Most renters find it cheaper to fill the tank themselves at a gas station near the airport before heading to the return lot. San Diego has multiple gas stations within a few miles of the airport, so this is usually a quick stop. If you are returning a car late at night or very early in the morning and cannot reach a station, the Sixt refueling option is available — just expect to pay more per gallon than you would at a pump.
What to do if you return the car late
Late returns at Sixt are charged by the day or by the hour, depending on how late you are. If you return the car one hour after your agreed return time, you may be charged for a partial day or an hourly rate. If you return it 24 hours or more after the agreed time, you are typically charged for an additional full day of rental.
The exact late fee structure is listed in your rental agreement. If you realize you will be late, call the Sixt location as soon as you know — some locations can extend your reservation over the phone and adjust your rate, which is cheaper than incurring late fees. The phone number is on your rental paperwork and on your Sixt confirmation email.
Damage inspection and what happens next
When the Sixt agent inspects the car at return, they look for new dents, scratches, broken glass, and interior damage. If they find damage that was not noted on your original rental agreement, they photograph it and document it on a damage report. You will receive a copy of this report, and Sixt will contact you within a few days with a repair estimate if they plan to charge your credit card.
If you believe damage was already on the car when you picked it up, tell the agent when ready and ask them to note it on the damage report. Take photos of the damage yourself if you can, and keep them with your rental paperwork. Sixt's damage claims process can take several weeks, so do not be alarmed if you do not hear back right away.
Returning outside of regular hours
If you are returning your Sixt rental after the location closes, you can use the after-hours return option. This involves parking the car in a designated after-hours lot, locking the doors, and leaving the keys in a find drop box or envelope as instructed by Sixt. You will receive a receipt or confirmation number for your after-hours return.
After-hours returns are riskier because no agent inspects the car in real time. Damage or fuel issues discovered later may result in charges to your credit card, and you have less opportunity to dispute them on the spot. If you must return after hours, take photos of the car's exterior and interior before you leave, and keep those photos with your rental receipt. Email those photos to Sixt's customer service along with your after-hours return confirmation number.
Getting back to the terminal after return
After the Sixt agent completes the inspection, you need to return to the terminal. Most off-airport rental facilities offer a free shuttle service that runs continuously between the rental lot and the terminal. Ask the Sixt agent where the shuttle stop is, or look for shuttle signs in the return lot. Shuttles typically arrive every 5 to 15 minutes depending on time of day.
If you prefer not to wait for a shuttle, you can walk to the terminal from the rental facility — the distance is usually a quarter to half mile, depending on which rental company lot you are in. The walk takes 5 to 10 minutes and is straightforward, with sidewalks and clear signage. Some travelers also call a rideshare service to return to the terminal, though this costs extra.
Frequently Asked Questions
Can I return my Sixt rental to a different location instead of the airport?
Yes. Sixt has other locations in San Diego, including downtown and near the waterfront. You can return to any Sixt location, not just the airport. Check your rental agreement to see if returning to a different location changes your rate — some one-way returns cost extra, while others do not.
What if I lose my keys before returning the car?
Tell the Sixt agent when ready when you arrive at the return lot. Sixt will charge you a key replacement fee, which typically ranges from $100 to $300 depending on the car model. The fee will appear on your final invoice. If you lose the keys before reaching the airport, call the Sixt location right away so they can prepare for your arrival.
Do I need to wash the car before returning it?
No, Sixt does not require you to wash the car. However, if the car is extremely dirty — mud caked on the exterior, trash inside, or stains on the seats — Sixt may charge a cleaning fee. A light layer of dust or normal wear is expected and not charged. If you are unsure, a quick wash at a car wash near the airport costs $10 to $15 and can prevent a larger cleaning charge.
How long does it take to get my final bill after I return the car?
Sixt usually sends your final bill to the email address on your rental agreement within 24 to 48 hours of return. The bill includes the base rental rate, any fuel charges, damage fees if applicable, and late fees if you returned after your agreed time. Review it carefully and contact Sixt customer service if you see charges you do not recognize.