when i put my foot down to pull away at lights etc the car does not move then after a few seconds the car pulls forward and drives normally through the gears it does not happen all the time but is sure to happen at least once on a journey and usually more than once in any given journey . its a saab 93 turbo.on inspection under the car there seems to be a minor leak of drive fluid from around the bottom of the transmission dipstick .the fluid seems to be up to correct level .