Most car rental companies in Nancy require a credit card for renting a car. It is used as a security deposit and for any additional charges or damages. However, some rental companies may accept debit cards or cash deposits, but this is less common.

When renting a car in Nancy, you will typically need the following documents:

• A valid driver's license from your country of residence
• A valid passport or ID card
• A valid credit card in the driver's name
• Proof of insurance coverage or the option to purchase rental insurance
• Some companies may also require an international driving permit (IDP) depending on your country of residence

Most car rental companies in Nancy offer unlimited mileage for rentals within the country. However, it's always best to check with the specific rental company to confirm their policy.

Yes, it is usually possible to rent a car in Nancy and return it to a different location, such as another city or airport. However, this may incur additional one-way rental fees, so it's important to check with the rental company and inquire about any extra charges.

The fuel policy for rental cars in Nancy may vary depending on the rental company. There are typically three options:

• Full to Full: You will receive the car with a full tank of fuel and must return it with a full tank.
• Full to Empty: You will receive the car with a full tank of fuel and can return it empty. However, you will not be refunded for any unused fuel.
• Prepaid: You can prepay for a full tank of fuel at a discounted rate and return the car with any amount of fuel remaining.

In case of an accident or damage to the rental car in Nancy, you should immediately contact the rental company and inform them about the situation. They will guide you on the necessary steps to take, such as contacting the police and filling out an accident report. The rental company's insurance policy will generally cover the damages, but it's important to review the terms and conditions of the rental agreement.