Hi Rumesh,
Engine consume around 500ml - 600ml between services (I service my car between 4500KM and 5000KM). Also until mileage reach to at least 3000KM no oil burning observed. After 3000KM I can observe oil drop. I think I will ask from mechanic to do OCV filter and PCV filter cleanup and if necessary I can ask to replace them. I am only worrying about knocking sound when I can hear when climbing mountains (not constantly heard that sound only in lower gears) when I pump 95 Oct petrol it reduce but sometime I can hear that noise.