I bought an X-reg Ford Focus 1.8TDi in October 2009. The guy advertised it as 50+ mpg. However, the first tank only yielded 42mpg. I thought this may be due to the onset of winter, as every other car I've owned had higher fuel consumption during the colder months, and that mpg would increase during spring and summer. However, since October my mpg has gradually dropped to 37.
I have been to various garages and even had a diagnostic test done and everything has come back fine. The car has just been MOT'd and the emissions were fine. There is no visible smoke of any colour from the exhaust. The car has done 117000 miles and I had a new cambelt fitted a week after I bought the car. There are no oil or water leaks.
Over the past couple of months, I have replaced the air filter, had an oil & filter change, replaced the glow plugs, and replaced all the breather hoses. There is also no obvious sign that the clutch is slipping.
One garage even suggested that it may be a problem with the engine management system.
I am at a loss to understand why my fuel consumption is increasing. Could it be a problem with the engine management system, the fuel pump, the turbo etc. Any ideas?
have the same problem?
Thursday, September 9th, 2010 AT 5:45 PM