If I want to give my review in a single line it will be Celerio diesel is the cheapest diesel car with maximum fuel economy. Celerio diesel is really underpowered you have to struggle in between gears to get a good pace while driving when Ghat sections up hill it struggles like a Tata Nano with 5 passengers I do not understand why did Maruti made it so under powered and feels cheap plastic to touch. It may be a practical car for only those who commute daily for a long distance and that too alone.