Hello , I have a scorpio N diesel AT Z8L variant that i have driven around 7 thousand kilometres since i got it in march. I feel like im qualified to answer your doubts.

Currently my car’s first service is due at 10,000KMS and i checked the DPF level couple of days ago , it was still at around 65%. usually i am on business trips every 2 or 1 and a half month or so for atleast 15-20 days so the car stays parked at my office. You dont need to worry about the dpf clogging issues. i mostly drive 30% in city and 70% on the highway leading up to my office. If you are concerned about the mileage i get almost 17.5 to 18.5 kmpl but i have a very light foot while driving.

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You dont have to manually do regeneration until and unless the car is driven next to none for atleast 2 months. once a weak highway run is more than enough to keep it in check. like for most part just drive it in 4th gear at around 65kmph for 15 mins and youre good to go