Has it lost any power or is it smoking? Is the engine temperature reading normal? Thats a terrible consumption unless its automatic, I would think you should be getting 40+.

Have you actually tested it by brimming the tank, then again and checking the mileage? Using the fuel gauge as an indicator is not very reliable.

Try filling it up and driving at a steady 60 mph on a flatish section of motorway or any quiet road for a few miles, then fill it again, you should be doing 50-60mpg if all is well, much less than that and you have a problem.

You could have the fault codes read and see if anything turns up but I think you need to do an accurate test first. If you do have a problem take it to a diesel specialist rather than a dealer, the are usually cheaper and know what they are doing.

Your style of driving can affect the consumption a great deal, if you drive hard, use high revs and do short journeys you could concievably get the fuel consumption that low especiallyy if the weather is cold.

There is not much in a service that would improve fuel consumption very much except possibly a clogged air filter.

hi with reference to my last thread can anyone tell me how to check the fuel sender as on mine you can put some diesel in and it will go up relly slow , and if light on guage come on and put diesel in it will stay on but eventually go up, another question what is original part number for the original glowplugsthanks