Do the S-Presso's other shortcomings are made up for by its fuel efficiency?

Maruti S-Presso is famous for its excellent fuel efficiency, a major selling point in the price sensitive Indian market. One of the most fuel efficient petrol cars on offer, it claims figures of around 21-22 km/l. The fact that fuel prices are rising and environmental awareness is also rising makes this aspect especially attractive. This is a contentious issue though as there’s a lot of debate about just how fuel efficient this is and if fuel economy is as a result of having to sacrifice other key factors like build quality or performance. That focus on improving mileage has come at the expense of other areas of consideration, argue some, while others believe fuel efficiency should be the highest priority in the entry level segment. The discussion also covers how the fuel efficiency claimed by the manufacturers matches up to the real world fuel efficiency and especially in the heavy traffic conditions of Indian cities.