My fuel consumption fluctuates between 57mpg to 45 mpg, the average seems to be ~54mpg. I check by filling the tank to full and doing a calculation against the miles travelled. I travel over 100 miles/day so I have monitored the situation over several weeks.
I fill the tank to full but one question I would ask, is there a possibility of an airlock during the refuelling. There is a noticeable swishing and gurgling when I drive away. Following a full refill I drove 137 miles and filled it up again, on that calculation I achieved 66mpg.
Or is there a defect in the fuel metering system, I am not familiar with diesel technology. There does not seem to be any engine fault, it runs and pulls effortlessly with no sign of engine distress.
Thanks in advance.
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My 218sld Turbo has done the same. Though I would expect this due to cooler air. Ie winter. Nothing wrong with engine
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Steve
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