Overdrive is automotive technical speak for top gear. When the Overdrive is off, the transmission will only shift as high as third gear but will not shift into 4th. This is useful when descending long grades or when driving around town and keeping the transmission from shifting up too often will prevent wear and tear. The shift patterns according to the selection made are below.
Overdrive On: 1-2-3-4
Overdrive Off: 1-2-3
Hopefully this answers your question. :thumbsup:
Thanks dude..so its preferable to drive the car with o/d 'off' or 'on' or when is the better situation to used the o/d? :liebe011: