My fuel REALLY isn't going very far...need some help!

[WiNgNuTz]

When did you last service it. Strictly no more than 5k ago if you want economy. <br />
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My 405 has done 900 miles to 80 litres, rounded down that's 51mpg. It's got a hdi box and serviced religiously, I also pay particular attention to other aspects of the car that affect MPG's, such as tyre Quality and brand, pressure depending on what driving I'm doing, correct + clean gear oil, engine oil, filters, no boost leaks, I have tracking done every few months or if it starts pulling, I clear my car out but still have toolkit in a bag and a spare wheel. Suspension is best shape ever<br />
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Oh, and you could probably up my mpg if my speedo wasn't about 10% under.

Was last serviced about 1.5k ago, no boost leaks that I'm aware of, still got the standard dt 'box, but I am terrible for keeping loads of stuff in the car!

Might have the tracking looked at, but surely that alone wouldn't make my mpg so poor?! As for tyres, using t1r's all round, the fronts were quite underinflated at one point, but are OK now (what psi should they be at? got mine at about 38psi now, they were 32! ).

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Also, on an unrelated note Kris, did you read my pm?