Dear its a good car from suzuki and good value for money. Usually you look for three major performance bits in cars - acceleration, breaking and handling. This car is excellent in all those.
Its has comparitively sound cabin and as per my findings; those who mostly complain about its fuel echonomy is because either they are running it with high RMP i.e. 3 or 4 plus or they r comparing it with lower cc cars.
Change plugs to iridium, keep changing oil after every 5K, keep rotating tyres and change air filter every 15K and it wont bother you ever.
Cheerz