Honda Civic is powered by the new 1.8L, 1799cc i-VTEC petrol engine with five speed manual transmission gearbox and with EFI (Electronic Fuel Injection) technology that offers higher engine performance with better fuel efficiency - it offers mileage 10.8kmpl in urban roads while on highway it gives 15.5kmpl which makes it the most fuel efficient car in its segment.
Meanwhile another variant of Honda Civic which is packed with automatic transmission gearbox offers mileage 8.9kmpl mileage in city and 13.1kmpl mileage on highway.
For more detailed about the car like features, specifications and latest price in your city, please click on the given link.
Honda recently discontinued the Civic in India, however you can buy a used Civic. You can visit our, used car section, where you can find good deals- http://www.cardekho.com/used-honda-civic+cars
Well, it is quite early to reach on any conclusion, whether the service network you visited provided you the correct information or not. We would suggest you to search for another service station, if it also gives you the similar advice then it would be better to repair your car. Their could be multiple reasons behind the noise coming out from your car's engine such as badly aligned camshift belt, faulty front brakes pad, and not so proper felt belt.