6-speed manual w/od meaning

what does overdrive mean
5-speed manual with overdrive
working of overdrive in automobile
what is overdrive in a truck
overdrive on or off
advantages of overdrive in automobile
how does overdrive work on a manual transmission
4 speed manual with overdrive

In the automotive world, six-speed refers to a transmission with six forward gears. The most common six-speed transmissions are traditional manual unitsOverdrive is the operation of an automobile cruising at sustained speed with reduced engine revolutions per minute (RPM), leading to better fuel consumption