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525D running very heavy on fuel, 20mpg..

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Old Nov 20, 2011 | 05:06 PM
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Hi everyone, my 525d on an 54 plate is running very heavy on fuel 20mpg. I have cleaned the egr valve n check the engine temp using the hidden menu... The temp is at 98 degrees at its peak. Whats else can i check or replace to get better fuel econ? What is everyones avarage Mpg on their cars? Cheers
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Old Nov 22, 2011 | 09:41 PM
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Where is that hidden menu?.....I always want to see engine temp.

I think 20 mpg is normal....
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Old Nov 23, 2011 | 02:15 AM
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Check out this Youtube link


Note: You must only add the last 5 digits of Chassis.
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Old Nov 23, 2011 | 09:59 AM
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Originally Posted by louisrai
Where is that hidden menu?.....I always want to see engine temp.

I think 20 mpg is normal....

Not quite!!

a 525D should be averaging around 37-40 mpg in normal use, hell I average 33.5mpg from a 530D !
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Old Nov 23, 2011 | 10:19 AM
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Originally Posted by KAF
Not quite!!

a 525D should be averaging around 37-40 mpg in normal use, hell I average 33.5mpg from a 530D !
What type of driving are you doing though?...when I do short journeys in my 530d I only get around 16-17mpg. When I drive on motorways I can average around 40mpg.
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Old Nov 23, 2011 | 11:58 AM
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Originally Posted by bmwfive
What type of driving are you doing though?...when I do short journeys in my 530d I only get around 16-17mpg. When I drive on motorways I can average around 40mpg.

That is my average over 6 years and 72,000 miles.
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Old Nov 23, 2011 | 03:39 PM
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Well thats what i was thinking i should be getting around 33mpg, so what can i do to improve my mpg...
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Old Nov 23, 2011 | 04:17 PM
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my consumption has been, on average around 37-45 mpg per WHOLE tank. That's mixed driving though, when I've been doing a lot of local driving, the lowest it would average out at was 37. With majority motorway driving, it would average out at 47.

Recently, with 90% mway driving like a grandad, it's only been doing 38mpg, that's when I checked and realised my thermostat was stuck open. Just bought a new one today, will be installing it tomorrow and seeing what difference it makes. I drove around for 30mins around town today and it didn't even go over 70c!

I do run tyres at max pressure though, and drive as if there is a full glass of water on my bonnet which I'm always aiming not to spill over.


How many miles has you e60 done?
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Old Nov 23, 2011 | 04:28 PM
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man i need to get a diesel. i got 17.5 mpg on my last tank of gas. but it was a lot of spirited local driving!
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Old Nov 24, 2011 | 03:13 PM
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My car has done 90.000. Its not thermostat becuz my car gets up to 94 degrees. So what can do to get my mpg up to 37mpg....
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