I too have a 18i and am very disappointed with its city fuel consumption. Using 95 RON fuel I average around 13l/100km per tank, admittedly with an average speed of about 26 km/h. This wouldn't be so bad if the car had some power! At least now after reading this thread I know it's not just mine. The dealer has checked it twice and not found anything wrong. Overall a very disappointing engine. What's worse is with the recent update they have now ditched this engine and replaced it with the 18d engine for about the same price......