I do not think unlimited mileage is available for Budget car rentals.
Insurance, GPS, unlimited mileage.
No restrictions. You can drive 10,000 miles if needed
Unlimited mileage may seem like a great idea when renting a car, but it is important to know that certain restrictions and fees may apply. Rental companies may allow unlimited mileage only on weekdays or within the state where the car is rented, so careful consideration of how the car will actually be used is important.
Sometimes the daily rate on a rental car with a mileage cap will be cheaper. If you are going to be driving fewer miles than the mileage cap allows (a typical cap is 150 miles per day), you may save from $3 to $7 per day on a rental car if you opt for a rental rate with a mileage cap.
Some of Budgets local and one way rental agreements do include unlimites mileage. You would have to ask about that particular agreement and the rate price.
Around $20 per day is the cheapest car rental. This includes unlimited mileage and guaranteed car quality. This also guarantees a reasonable price for a rental.
There are many companies that provide unlimited mileage car rental over broad range of cars. The offers are also within all ranges. Popular companies are as mentioned Thrifty car rentals, Dex Knows etc. Also you can book in advance according to your schedule and that too online. So have a nice vacation.
I have found that the best and lowest place to rent a car is Budget Rental Car services. They offer small to medium clean car rentals at $29 per day allowing unlimited mileage specials.
I would say the closest rental car company near you, that offers unlimited mileage.
You can take that road trip you have always dreamed about even if you are on a limited budget. Many car rental companies will allow unlimited mileage as long as you stay within a certain geographic region of the U.S. So if the the trip you are thinking of is not too far, then a car rental with unlimited mileage is the perfect choice and can save wear and tear and maintenance on your own car. For those on a budget, some car rental companies also offer half-priced rentals on the weekends. Combine a weekend road trip with an economy sized car that gets better gas mileage and you can have more money in your pocket to do the things you really want to do.
If you're renting a car for vacation, check different rental companies for their mileage requirements. Some offer unlimited mileage but only for so many miles per day or by the week. Keeping the car longer might be cheaper. Some will offer unlimited miles but only to certain areas. Know the limits and look at other packages if unlimited mileage isn't an option. You can end up getting charged extra if you go over their limit.