Hi there,

I own a ford focus mk1 1.8 tdci ghia X.

Recently my MPG has dropped quite considerably. I used to get 50+ mpg with a record of 63MPG on a long run. Even if I drove fast I will still always get high 40's. Since the new year my MPG has dropped down and I am only getting low 40's.

My driving style hasn't changed and however I drive the MPG doesn't go up even on long runs. I measure MPG by filling up my tank and working out how many miles I've done divided by gallons of fuel I have used and do not rely on the MPG gauge.

I have checked my tyre pressures and they are at the recommended 32 PSI all round. My EGR valve has been blanked off and there is no more smoke then usual coming out of the back. There is also no smell of fuel when I open the bonnet so I don't think there is a fuel leak.

Power wise the car is fine. Throttle response is as good as normal and the car is not going into limp mode or logging any fault codes.

The only thing I have done to the car this year is change my alternator and alternator drive shaft and I have also changed my A/C compressor a few weeks ago.

My brakes seem fine and there is no unusual noises through braking or normal driving. The front and rear disc pads look fine although I have only inspected the outboard pads and not the inboard ones. They appear to be evenly wearing so I don't think any of the calipers are sticking.

I also always put either shell or BP diesel in my car and I have also put injector cleaner though my car a few times this year so I don't think it's fuel related.

Anybody got and ideas? I've got a bit of a road trip coming up in June so I really want to get improved MPG by then.

Thanks,

James