poor mpg 2004 525i
06-29-2012, 09:57 PM
#1
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My Ride: 535i
Model Year: 2008
i have only 80k , mpg dropped significantly , normaly i was making about 400-440 on tank , after 4 month in the garage .... 350 
, changed spark plugs today , ...any other suggestions...?
tire pressure ok , have a minor leak on engine(mechanic quoted $300 labor and part(only $20), told me it is normal for all bmw since the gasket is getting dried after awile)... oil level ok all the time ....computer shows 18-19mpg , dont floor at all
, changed spark plugs today , ...any other suggestions...?tire pressure ok , have a minor leak on engine(mechanic quoted $300 labor and part(only $20), told me it is normal for all bmw since the gasket is getting dried after awile)... oil level ok all the time ....computer shows 18-19mpg , dont floor at all
06-30-2012, 12:38 AM
#2
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My Ride: 2006 525i M Sport
Carbon Black
Cream Leather Interior
18 - 19 mpg on a 525i...something is really wrong, I have a 2006 525i and I average 30.2 mpg, mostly city driving.
06-30-2012, 10:32 AM
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My Ride: 530i
i have only 80k , mpg dropped significantly , normaly i was making about 400-440 on tank , after 4 month in the garage .... 350 , changed spark plugs today , ...any other suggestions...?
tire pressure ok , have a minor leak on engine(mechanic quoted $300 labor and part(only $20), told me it is normal for all bmw since the gasket is getting dried after awile)... oil level ok all the time ....computer shows 18-19mpg , dont floor at all
, changed spark plugs today , ...any other suggestions...?tire pressure ok , have a minor leak on engine(mechanic quoted $300 labor and part(only $20), told me it is normal for all bmw since the gasket is getting dried after awile)... oil level ok all the time ....computer shows 18-19mpg , dont floor at all
Brake rotor or caliper corrosion? Parking brake not fully releasing after storage?
07-01-2012, 10:44 AM
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T
Originally Posted by pavrom' timestamp='[url="tel:1341035859"
1341035859[/url]' post='1453795]
i have only 80k , mpg dropped significantly , normaly i was making about 400-440 on tank , after 4 month in the garage .... 350 , changed spark plugs today , ...any other suggestions...?
tire pressure ok , have a minor leak on engine(mechanic quoted $300 labor and part(only $20), told me it is normal for all bmw since the gasket is getting dried after awile)... oil level ok all the time ....computer shows 18-19mpg , dont floor at all
i have only 80k , mpg dropped significantly , normaly i was making about 400-440 on tank , after 4 month in the garage .... 350
, changed spark plugs today , ...any other suggestions...?tire pressure ok , have a minor leak on engine(mechanic quoted $300 labor and part(only $20), told me it is normal for all bmw since the gasket is getting dried after awile)... oil level ok all the time ....computer shows 18-19mpg , dont floor at all
You also have to remember that the computer will show the data based on your style of driving... Have you felt the gas comsumption poor when actually driving it... Or just by reading the computer? You might as well reset the data and drive the car for a while to see if you get the same value....
Anyhow... Remember we are not driving 1.3L toyotas
Originally Posted by thomas finlass' timestamp='[url="tel:1341045526"
1341045526[/url]' post='1453804]
18 - 19 mpg on a 525i...something is really wrong, I have a 2006 525i and I average 30.2 mpg, mostly city driving.
18 - 19 mpg on a 525i...something is really wrong, I have a 2006 525i and I average 30.2 mpg, mostly city driving.
Originally Posted by pavrom' timestamp='[url="tel:1341069381"
1341069381[/url]' post='1453823]
i know 525 from 2006 and up much better on mpg... i think n54 or n52 engine is bit different
i know 525 from 2006 and up much better on mpg... i think n54 or n52 engine is bit different
07-01-2012, 06:32 PM
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My Ride: 2008 550I LOADED, all options except HUD and NV
Well. firstly, 4 months in the garage? I'd say there's a bad gas issue (not that kind of gas). I would change the spark plugs then use Chevron with Techron fuel system cleaner on the next 1-2 tanks, you should be fine after that. I changed my plugs with ~75k miles and it immediately improved mpg by 3 mpg. My best mpg was with my old plugs, I got 35mpg (almost all hwy) from LA to Vegas 
Our cars can be AMAZING if maintained properly
Our cars can be AMAZING if maintained properly