I bought Next Gen i10 with Kappa2 in Nov 10. I have driven around 3000kms mostly in Mumbai city. I rejected ford figo petrol because of poor mileage. But i10 is also not good in terms of fuel consumption. Its giving a mileage close to 12kmpl only.
Otherwise the car is good in handling, pick up & comfort. Service by the dealer is also OK till date. If anyone is really concerned about fuel consumption, this is not the car to go for. But if you are into looks, comfort, handling i10 is a good buy.