Honda City gives mileage in city around 14kmpl while on highway it gives around 18kmpl..... it is equipped with 1.5L, 1497cc, i-VTEC petrol engine that produces 118PS power.... for more information about this car along with its prices in particular city you may visit the above link...... Honda City
Certainly, you can get your car modified as per your choice. Coming to the front grill, you can replace it with the different grill. For that, we suggest you to get in touch with the authorized service centre as they will be the best people to suggest you few compatible grills to choose from.
Click here to find the Honda service stations by selceting your city in the drop down list.