i have a 2001 BMW 325i , when i speed the car over 80 kilometers it does not shift gear to the next level. Is there any overdrive option on this BMW model?
Don't know if your car has overdrive or not but the way to use overdrive is to turn it on and leave it on, unless you're towing something, or going up a hil and the car is struggling.
It's correct that the overdrive shouldn't kick in at 80kph, just a little faster is when it should be kicking in if you have it.