I have Chevy Spark LS since 2008. It gave highest mileage of 36 km per liter from Delhi to Chandigarh and lowest 7 km per liter after conversion to Autogas. I still do not know why and how. Normally its mileage is between 14 to 18km to liter of petrol. It is sporty and good car for performance as well as comfort. Silencer is a problem I got it changed once and now pipe needs welding. Shockers are good, front tyres replaced at 41k kms. Service cost at dealer is expensive, last service done at mechanic at 3rd the cost of dealer. But this is the car which I have with me longest. Good petrol car.