What does the overdrive button in 2001 Infiniti i30 do?

The overdrive button in a 2001 Infiniti i30 is designed to enhance fuel efficiency and reduce engine wear during highway driving. When activated, it allows the transmission to shift into higher gears, which lowers engine RPMs and improves gas mileage. If the button is turned off, the vehicle operates in lower gears, providing more power for acceleration and towing but at the cost of increased fuel consumption. This feature gives drivers the flexibility to choose between performance and efficiency based on their driving needs.