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Old 10-01-2012, 06:41 AM
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fuel consumption display question

i have a 2004 E53 with 3 litre turbo diesel.
The dash LCD includes an average consumption readout. I have tried resetting that, but i cant get it to match reality.
The LCD display varies from 8.3 to 8.8 litres/100km, yet reality from several tank fills, is more like 10.5l/100km
has anyone else experienced this?
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  #2  
Old 10-01-2012, 07:34 AM
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The most accurate is reality. The obc is a guess at best.
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Old 10-01-2012, 08:18 AM
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Quote:
Originally Posted by SlickGT1 View Post
The most accurate is reality. The obc is a guess at best.
+1 My fave is when petrol folks come around talking ab how they must be getting 36 MPG b/c the gas gauge is at 1/2 tank (or 3/4, or 1/4 or ANYTHING but empty) and they've traveled x # of miles.

So, like a gauge at 1/2 full on a 3.0i and an trip odo at 310 miles means you're going to defy the laws of physics and travel 620 miles on that tank? Or the OBC says you have 300 miles to empty so you MUST be getting 610 miles on the tank? Yeah... get back to us at empty. And don't forget the pics!
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Old 10-01-2012, 03:46 PM
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Quote:
Originally Posted by terryo View Post
i have a 2004 E53 with 3 litre turbo diesel.
The dash LCD includes an average consumption readout. I have tried resetting that, but i cant get it to match reality.
The LCD display varies from 8.3 to 8.8 litres/100km, yet reality from several tank fills, is more like 10.5l/100km
has anyone else experienced this?
BMW can adjust it, but it isn't worth it IMO. A common cause of reading incorrectly, especially on a diesel, is if a performance chip or flash has been installed. Since it offsets the sensors to achieve a power gain, the fuel consumption reading can become inaccurate.
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