Fuel economy shocking 230k

alexanderfoti

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Hi all

My girlfriend is getting 18-19mpg on her 6 mile commute in our manual 230 k clk.

I know it's a heavy car etc etc but that's 2 or 3 more than my e55 would get on the same journey!

What sort of fuel economy do other users of the 230k engine get?

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alexanderfoti

alexanderfoti

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M111 not 271 :)

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robparker

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Well my brother gets 35 on a run out of his c230k manual (202), but not sure around town, based on that I would have assumed around 25
 
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Uncle Benz

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Manual 2000 yr clk230k in here this morning. His drive in from Reigate this morning @ 33mpg.
Judging from what we have already seen of this car, i'd look to see if it's got a cheap ebay maf on it.
 
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alexanderfoti

alexanderfoti

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Manual 2000 yr clk230k in here this morning. His drive in from Reigate this morning @ 33mpg.
Judging from what we have already seen of this car, i'd look to see if it's got a cheap ebay maf on it.

Good point, will have a look tonight, easy to check.
 

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I was getting similar when I had that car a few years ago. Mine was auto however.
 
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alexanderfoti

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I was getting similar when I had that car a few years ago. Mine was auto however.

Its defo not right, my other half is a very slow driver, when I drove it around for a day I averaged 13.6!!!
 
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alexanderfoti

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Just checked. Mercedes Maf so at least that is genuine. Air filter is clean but the car could do with a service.

I'm thinking of going down the 02 sensor route.

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Before you spend any money on parts etc get it plugged in to STAR etc. Note any fault codes, clear 'em, test drive and then see which if any pop up again.

Having said that 18 - 19mpg on a 6 mile commute... if the traffic is clearish then while the coolant might reach 80 quickly the journey will be over before the engine is properly upto temp. If it's heavy rush hour traffic then gallons per hour might apply more than mpg? Either way if that's the type of use it sees mostly then it ain't gonna help general economy/engine efficiency
 

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if the O2 sensor was out, I am sure it would flag a MIL?
 
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alexanderfoti

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if the O2 sensor was out, I am sure it would flag a MIL?

I seem to recall issues with this engine hitting adaption limits and not throwing a code but running in very rich?

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hotrodder

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Probably wrong as i'm not familiar with the 208 but i would have thought they'd log things like adaption limits- w124s do
 
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alexanderfoti

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Before you spend any money on parts etc get it plugged in to STAR etc. Note any fault codes, clear 'em, test drive and then see which if any pop up again.

Having said that 18 - 19mpg on a 6 mile commute... if the traffic is clearish then while the coolant might reach 80 quickly the journey will be over before the engine is properly upto temp. If it's heavy rush hour traffic then gallons per hour might apply more than mpg? Either way if that's the type of use it sees mostly then it ain't gonna help general economy/engine efficiency

Agreed it is a short journey, but the 320 cdi used to to 35 and that was in the same traffic, bigger car, air con on etc. I think I need to drive more personally to see what is does.
 
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alexanderfoti

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Probably wrong as i'm not familiar with the 208 but i would have thought they'd log things like adaption limits- w124s do

The 208 should do as well, but I seem to remeber that adpation would get stuck to one bias rather than getting stuck on a limit?
 

hotrodder

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Dunno about the adaption thing on a 208, i think i'd probably begin the same way in your position... use it myself for a few decent runs and give it a damn good caning. Might be a waste of time but an Italian tune up on a decent country road is usually fun
 
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alexanderfoti

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I might give it a service first, no idea how old the oil has been in there for, doesnt look great!
 
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alexanderfoti

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Has anyone checked for a binding brake?

Good point, I will get the IR thermometer out next time the other half arrives back from work :)
 

amb67

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I had a C230 K back in 2004 and the fuel economy was shocking back then, I was getting around 20 - 25 mpg but my journey of 100 miles a day was mainly in the lanes of rural Kent.

Suffice to say I got rid of it after a year and replaced it with a C220 that gave me circa 38 mpg on the same journey.
 
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alexanderfoti

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I had a C230 K back in 2004 and the fuel economy was shocking back then, I was getting around 20 - 25 mpg but my journey of 100 miles a day was mainly in the lanes of rural Kent.

Suffice to say I got rid of it after a year and replaced it with a C220 that gave me circa 38 mpg on the same journey.

Hmmm that doesn't bode well for me :(

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