Get up to 15% Better Milage Using Cruise Control
Using cruise control on highway drives will improve gas mileage significantly. It makes a big difference in two ways: cruise control prevents the driver from repeatedly creeping over the speed limit and burning more gas at higher speeds, and by keeping your vehicle speed constant there is less acceleration which burns a lot more gas than just driving at a constant speed.
The test drive team at car review site Edmunds.com tested a 2005 Ford Mustang GT and a 2005 Land Rover LR3 SE on a 56-mile drive. Edmund’s drivers set the cruise control in each vehicle to 70 miles per hour for one test and then retested with drivers holding the cars between 65 and 75 miles per hour. Using the cruise control set to 70 miles per hour improved milage by about 14% in the Land Rover and improved milage by about 5% in the Mustang.