Sport mode may help with your fuel to clutch ratio, but it might not solve the root issue.
I have one idea. When you come to a stop, do you put it in neutral and let the clutch out until right before setting off again? Sometimes I did this and would catch the car right in the middle of an auto off and it would confuse the car a bit. It always started back up right away, but I could see how it might behave differently on a diesel. I've since stopped doing this.
Try driving around for a few days without the auto off feature enabled to see if it has anything to do with your issues. Something else you might try is never letting your foot off the clutch when coming to a quick stop/start situation.
All the above is predicated on the notion that you put the car in neutral and let the clutch out when coming to a stop, of course. If you don't, it must be something else.
I have one idea. When you come to a stop, do you put it in neutral and let the clutch out until right before setting off again? Sometimes I did this and would catch the car right in the middle of an auto off and it would confuse the car a bit. It always started back up right away, but I could see how it might behave differently on a diesel. I've since stopped doing this.
Try driving around for a few days without the auto off feature enabled to see if it has anything to do with your issues. Something else you might try is never letting your foot off the clutch when coming to a quick stop/start situation.
All the above is predicated on the notion that you put the car in neutral and let the clutch out when coming to a stop, of course. If you don't, it must be something else.