There generally is no mileage limit for Avis rental cars in the United States for most rentals, especially for standard daily and weekly rates. This means that customers can drive as much as they need during their rental period without incurring additional mileage charges. However, there are exceptions for certain vehicle types or specific rental agreements that may impose mileage limitations. For example, specialty vehicles or long-term rentals may have different terms that could include mileage restrictions. It is always advisable to check the specific terms and conditions associated with your rental during the booking process. If you wish to clarify any details or to see if specific conditions apply to your reservation, the current Avis web page can provide contact information for further assistance.