There are some travel destinations that make it difficult to get around without renting a car. Anyone who has ever dealt with a rental knows that the estimated cost online is never the actual amount you pay when returning the car. Last time I rented a car the quote was $60 a day, and the total amount came out to almost twice as much!

Kayak.com recently launched a unique tool called the Fuel Cost Calculator to help budgeting travelers better estimate the cost of renting a car. The calculator considers miles per gallon, average price of gas, number of miles you expect to drive, and type of driving (highway or city) to estimate the total cost of gas, and combines this number with the daily rate of each car. According to Kayak, it is the only site that generates the total price per day and gives users power to compare those prices across rental car agencies and car class.
see this is something that i NEVER understand - how you're quoted a price - and you assume that there's tax and fees but then there are sooo many add-ons that you pay so much more. it's so hard to figure out how much your trip really costs - but this tool really seems like it'll help. next time i go somewhere that i have to rent a car - i'm going to try that out and see how i fare.
1