eli5, what does the OD button do on a car and why is it there?

Question

I’m assuming it’s the overdrive button on the side of my gearshift. 2012 Nissan Altima, base model. Everything I googled assumes I know more than how to change oil. Thanks in advance!!! 😊

In: 263

Answer 1

I think overdrive disengages the torque converter lockup, giving you better acceleration and RPMs at the highest gear but worse gas milage.