Diesel consumption on my 2005 Honda Accord has gone down 20% practically overnight. Driving style hsn t changed, I did change the air filter thinking that was the problem but it made no difference and I have always bought my diesel from the same place (Tescos)

Anything else I could try, anyone?

Fuel Filter. Depends on how many miles the old one has done. Also it used to be the case that if you have a water trap in your fuel filter it may have frozen in the cold weather and not been feeding the injectors correctly.

Thanks potter.

60,000 on the clock. Can remember ever puting in a new fuel filter.