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post #135 of (permalink) Old 13th May 2008
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Laguna Fuel Consumption

Hi guys/gals
I have had some really erratic fuel consumption readings myself. Both before & after air mass meter & turbo repairs carried out.

On average, the OBC would show 34-35mpg, but a manual caluclation would show 39mpg. This is over the course of 500+ miles. A few tanks ago I had the OBC show 36-37mpg, but again a manual calculation of 39mpg. My journeys would normally consist of steady driving on A & B roads (40-60mph ish)with nothing really in the way of a long motorway run.

So far on this tank full, I had 44.1mpg displayed, but had now settled at 38-39mpg over about 350 miles. I'm not expecting to get any more than the usual 39mpg over the course of a tank, as the mileage covered & the remaining range will be consistent to what I've been getting previously. I will believe the fuel gauge and fill up as needed.

Does anyone one know that if you hold down the OBC button on the wiper stalk & then insert the key into the ignition, the instrument gauges will go through a self test, & will also display the fuel volume in litres. Perhaps another back up to confirm you fuel gauge readings.
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