I have Hyundai EON & I am enjoying the ride from last 8 months. If you have small family of 4-5 members & you are looking for a car than its perfectly fine. Maruti Alto is also an option but Alto doesnt have that good feature & interior as compare to Hyundai EON. In just 4 lacs or a bit more you will get the top model with AC & power window, stearing. Really comfortable. Fuel consumption & mileage is really good. While seeing car you will feel that its Hyundail i10 small version in terms of looks.
But there are few bad things like this car floor is very low, while running car in DELHI-NCR local roads, you will feel awkward, because car floor touches at speed breakers sometimes.
Secondly, space is not that big as compare to Alto, if you have healthy 5 members family, so its a difficulty to adjust. But these are minor things which you faces rare times.
Overall its a wonderful car in affordable price. Go for it