Need advice for my XUV700
I have a 2023 Diesel Automatic XUV700. I have 46K on the odo as of today. Idk why from the last 2-3 months I have seen an enormous mileage drop in my car in city (and I usually travel in the non peak hours mostly). Tried driving in Zip mode in the best way possible but still it ain’t going above 7.5-7.6 (previously it used to be around 8.5-9.5 or even 10 sometimes). My friend suggested to get Engine Decarbonizing done Entire Fuel System Cleaning Fuel Pump Injectors, Filters Cleaning, Airflow n Boost Sensors cleaning (he has got it done for his XUV500 and defender as well as it is a doorstep service). So it it fine if I also get it done ?