i have a 406 hdi s estate(03) the needle does not give accurate readings it could be half way and after a few days it might go up and trip computer may show an extra 150 miles to refill. when its time to fill up, if or example i only put in £10.00 fuel the needle might go up to where it normally £20.00 and then rapidally decline. also mpg average is only 30 urban according to the trip computer.
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