Changing travel plans may mean keeping a rental car for several additional days. An extension is not automatic: the vehicle may already be reserved for another customer. Give the proposed return date as early as possible. These steps help prepare a clear request; they do not guarantee availability or a particular price.

State the exact date and time

Replace “I will bring it back a little later” with a specific date and time. Include the booking reference or vehicle details. Mention any change of return location in the same message. Wait for a response: sending a request does not mean it has been approved. The original contractual return time may remain in force until written agreement is obtained.

Confirm vehicle availability

If the same car cannot be supplied for the extra days, ask about a suitable replacement and handover time. Compare class, luggage space, transmission and passenger capacity. Record the replacement vehicle's condition separately. Allow time to return the first car and collect the second; the first inspection record does not describe the replacement.

Check the new price separately

Request a written calculation for additional days, extra services and whether an existing promotion applies to the new period. Do not assume that an earlier special offer continues automatically. Ask when payment is due and which verified method to use. Showing the overall amount, the portion already paid and the balance separately helps avoid confusion later.

Revisit mileage and usage conditions

Clarify how the mileage allowance is calculated for the additional period. Does each extra day add mileage, or does the contract's total limit remain unchanged? If the second driver, destination or return location changes, ask for these to appear in the written confirmation. Review the fuel and return inspection requirements again.

Keep the extension confirmation

Retain confirmation covering the new date, time, vehicle, price and important conditions. A simple request could say: “I would like to return the vehicle under my booking on this date at this time. Please confirm availability, the additional amount and mileage terms.”

Provide these details when contacting Rentacar24 about your selected vehicle. If no confirmation arrives, contact the company directly. Do not treat a delay as an automatically agreed extension.

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