The mileage of Honda City in city roads is 14kmpl while on highway it gives 17kmpl .... for more details a bout this car along with its prices in your city you may visit the following 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.