Hi all, for a while now I'm struggling with poor mpg. When I purchased the car I could comfortably get around 30mpg, but recently I'm averaging less that 25mpg.
Initially I had put it down to the fact that I was just doing short journeys, and 'enjoying' the car. But not long ago I did an airport run, and the best I could manage driving very carefully was 28mpg.
Within the last 5k miles the car has had a full service with complete timing set waterpump etc,
There are no errors showing on scan at the moment.
The only thing to change engine wise was fitting of ramair intake.
The only other possible symptom is a slightly rough idle on cold starts, which settles after a few minutes.
Based on the above, I'm thinking maybe it needs a carbon clean, I don't know if it's possible to effect the mileage that much.
Maybe MAF sensor, but I figure that would throw an error.
Any other suggestions?