Maruti Celerio is a good car but it could have been better or rather best in the range if the following issues wouldn't have been present in it :
1. Although spacious from the inside, and with all it's features, the car price is on the higher side.
2. The AGS is lagging most of the times especially when the car is going up the ramp, and this is mainly due to the engine power of 1000cc which is on the lower side.
3. The gear shift can sometimes get stuck while you want to race up and overtake the cars on the road, generally the gear shift should happen automatically when the RPM goes above 2000 but it often ups the gear set 3000rpm.
4. Now for the best part, the mileage of the car is superb, if you drive it decently it can surprise you with 22 km per litre mileage. The space is equivalent to Maruti Swift.