E320 CDI Mileage
Senior Member
Joined: Mar 2008
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1999 E320 & 2008 S550 Designo
I agree..if it is only a few miles better why bother...
I would strongly consider it if it gets consistently above 35-37 MPG (mixed driving).
From reading the forum..the averages is all over the map...some are only getting a few miles better than the gas version.
From reading the forum..the averages is all over the map...some are only getting a few miles better than the gas version.
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The Bluetec is on average much more efficient than than an E350, period.
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From: DC
2005 E320 CDI (Brilliant Silver)
I have 112,000 miles on my 2005 CDI. My average over the last 51,000 miles is 34.5 mpg. My mix of driving is 70% hwy 30% city. On 100 mile hwy drives I have regularly seen 37 even 38 mpg. Believe it or not the car seems to get the best fuel mpg at a steady cruise of 80mph.
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From: FL410
'05 E320 CDI, '08 BMW X5 4.8i, '11 Duramax 2500HD
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I'd love for that to be true but my '05 CDI (51K miles) averages 28 with a mix of city and highway. Just got the Service B as well. Anyone with thoughts on what might be wrong with it?
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From: FL410
'05 E320 CDI, '08 BMW X5 4.8i, '11 Duramax 2500HD
habit is a big part of it... There have been rare times when I drive in down town Scottsdale or in the busier parts where my mixed driving is down in the mid 20's...
Last edited by CE750; Jul 6, 2008 at 12:25 PM.
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From: FL410
'05 E320 CDI, '08 BMW X5 4.8i, '11 Duramax 2500HD
I corrected it already.. I have been known to make that mistake a few times in the past while typing hastily on the internet. If you do a post search (and I have a few) you'll notice it's a mistake and not a symptom of bad grammar skills, but this is the first time I've had someone point it out while trying to help. 
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From: Blaine, WA
07 E320 Bluetec
I corrected it already.. I have been known to make that mistake a few times in the past while typing hastily on the internet. If you do a post search (and I have a few) you'll notice it's a mistake and not a symptom of bad grammar skills, but this is the first time I've had someone point it out while trying to help.
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Joined: Sep 2007
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"Your in CA".
This was both factually (as my profile shows, I'm in North Carolina, not California) and grammatically ("Your" is the possessive of "you"; "you're" is a contraction of "you are").
CE750 said he "corrected" the error but he actually deleted the entire sentence, adding further confusion.
Regardless, I still haven't gotten any explanations for my CDI's below-average MPG.
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From: Europe
223.168 & 213.012 & 906.633 & 214.005
CE750 wrote:
"Your in CA".
This was both factually (as my profile shows, I'm in North Carolina, not California) and grammatically ("Your" is the possessive of "you"; "you're" is a contraction of "you are").
CE750 said he "corrected" the error but he actually deleted the entire sentence, adding further confusion.
Regardless, I still haven't gotten any explanations for my CDI's below-average MPG.
"Your in CA".
This was both factually (as my profile shows, I'm in North Carolina, not California) and grammatically ("Your" is the possessive of "you"; "you're" is a contraction of "you are").
CE750 said he "corrected" the error but he actually deleted the entire sentence, adding further confusion.
Regardless, I still haven't gotten any explanations for my CDI's below-average MPG.
Anyway mileage varies so much depending on traffic and road conditions that it is almost impossible to compare anything else than the optimum figures at relatively slow speed driving on a highway with cruise on all the time (no mountain roads). If you start to have any city driving included, it is impossible to compare one against another when you don't know the acceleration/braking style or how long each one stays at traffic lights etc. etc.
Perhaps you already posted your highway figures? If you have calibrated the IC meter and drive some 100 miles at a speed of 55 to 60 mph, you should find pretty nice figures.
The US rear differential ratio is usually different, this actually increases fuel consumption and makes it difficult to compare with Euro cars. Perhaps the optimum speed for fuel consumption is a bit different too, usually it is at its best at the lowest speed where it still keeps the highest gear. You may find this pretty slow speed, but you should also get better than factory rated figures (the factory figures include more realistic driving patterns).
Last edited by Diesel Benz; Jul 7, 2008 at 02:59 AM.
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From: Europe
223.168 & 213.012 & 906.633 & 214.005
That sentence was not exactly complete, what I meant is that a tune up would not typically decrease fuel consumption really even if often claimed so. Some marginal drop could be seen but in all cases that would be at the cost of engine longevity. Of course it is possible to get some power advantage too, at least from turbo engines but that too is a compromise.
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From: Toronto
2006 E320 CDi, 2008 3/4 Ton Suburban, 2007 "rice rickshaw" Accord 5 speed
I mostly drive around town, 16 miles daily and get 26-28 mpg.
Highway is much better, 39 mpg.
I think we cannot compare the straight 6 diesels with the newer V-6 diesels because they have the 7 speed transmission. The straight 6 would be perfect with the newer 7 speed.
Highway is much better, 39 mpg.
I think we cannot compare the straight 6 diesels with the newer V-6 diesels because they have the 7 speed transmission. The straight 6 would be perfect with the newer 7 speed.
Member
Joined: Dec 2004
Posts: 92
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From: NJ_NY area
2006 E320 CDI.SOLD..'02 CLK430 Cabrio(SOLD),08 Disco3..1996 FLH-TP, 2017 E300
Just over a month w/ my '06 E320 CDI.
Just got my '06 E320 CDI, (Certified, one owner MB Dealer, 32K), and have been monitoring this thread closely.
Sooooo, after a month of running, I'm really disappointed with my city driving, today has been my worst , with 15.1 mpg after 22mi at an avg speed of 18mph......Yet I avg. 33 to 37 mpg on long trips (75 mi trips to the Jersey shore and 110 mi trips to the North Fork of Long Island, NY @ 70mph w/ac).
The city driving really hurts my overall average.
I checked my tire pressure, brand new 16" ContiTouringContacts expecting to find them low...but...get this....R/R tire @ 47psi, L/R tire @ 42psi...the front tires were between 35-37 psi. (This was right from the dealer). I adjusted all the tires to the recommended pressure, so I'll probably even get less mileage.
My CLK430 almost did as well in city driving....And I'm babying the CDI around.
I'm bringing the car in for service next week, and need suggestions.
Sooooo, after a month of running, I'm really disappointed with my city driving, today has been my worst , with 15.1 mpg after 22mi at an avg speed of 18mph......Yet I avg. 33 to 37 mpg on long trips (75 mi trips to the Jersey shore and 110 mi trips to the North Fork of Long Island, NY @ 70mph w/ac).
The city driving really hurts my overall average.
I checked my tire pressure, brand new 16" ContiTouringContacts expecting to find them low...but...get this....R/R tire @ 47psi, L/R tire @ 42psi...the front tires were between 35-37 psi. (This was right from the dealer). I adjusted all the tires to the recommended pressure, so I'll probably even get less mileage.
My CLK430 almost did as well in city driving....And I'm babying the CDI around.
I'm bringing the car in for service next week, and need suggestions.
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Joined: Jun 2005
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From: FL410
'05 E320 CDI, '08 BMW X5 4.8i, '11 Duramax 2500HD
Just got my '06 E320 CDI, (Certified, one owner MB Dealer, 32K), and have been monitoring this thread closely.
Sooooo, after a month of running, I'm really disappointed with my city driving, today has been my worst , with 15.1 mpg after 22mi at an avg speed of 18mph......Yet I avg. 33 to 37 mpg on long trips (75 mi trips to the Jersey shore and 110 mi trips to the North Fork of Long Island, NY @ 70mph w/ac).
Sooooo, after a month of running, I'm really disappointed with my city driving, today has been my worst , with 15.1 mpg after 22mi at an avg speed of 18mph......Yet I avg. 33 to 37 mpg on long trips (75 mi trips to the Jersey shore and 110 mi trips to the North Fork of Long Island, NY @ 70mph w/ac).
Even when I totally lead foot it around, and show off the power of the car to friends, I'm pulling of 20 mpg city... how can you be getting in the teens??? that's SUV milage! Something is totaly wrong.. Is it all stop and go with little 30-40 mph stretches?
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Joined: Apr 2006
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From: Barrington IL
2015 E 250, 1999 BMW M Roadster, 1939 International Harvester, 2023 GLC
2005 CDI 195,000 still get 37-39 mpg in the summer. Winter is less up north as the winter fuel blend is diluted so less BTU's per gallon. Plus diesels like to be warm to be efficient. Winter warm up takes time.
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2012 E350 & 2005 CLK 320 Cabrio
I recently traded my '05 CDI. I had ~150k on the odometer and got 22-24 around town (4 miles to work) and 36-37 on trips. I put 60k on the odometer and it was consistent from the time I bought it. Great vehicle. My new (to me) '12 E350 is getting about the same around town, which is nice since those are my main miles. I haven't taken it on a trip yet, but I'm hoping to get 30+-.
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Joined: Nov 2013
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'06 e320cdi
My MB is w211, 320cdi 224hp, om642. automatic gearbox 7g.
Fuel consumption extra urban only: 37mpg(100km/h) avg speed 62mph(6.3 l/100km)
Fuel consumption urban(traffic): 19mpg (12 l/100km), avg speed 15mph
Is this ok?
I saw in few websites, that fuel consumption for this model/engine is much lower: extra urban 42mpg, urban 22.8mpg
http://automodels.net/en/car/mercede...320-cdi-224-hp
What's your results?
Fuel consumption extra urban only: 37mpg(100km/h) avg speed 62mph(6.3 l/100km)
Fuel consumption urban(traffic): 19mpg (12 l/100km), avg speed 15mph
Is this ok?
I saw in few websites, that fuel consumption for this model/engine is much lower: extra urban 42mpg, urban 22.8mpg
http://automodels.net/en/car/mercede...320-cdi-224-hp
What's your results?
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From: V E G A S
1922 Ford Model T / no OBD
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From: Charlotte, NC
2005 E320 CDI, 2015 GLA 250
My 2005 CDI at 185,000 miles typically gets 38 mpg in summer and 34 in winter by the onboard computer.
However, I've just started calculating it from gallons going in versus miles travelled and it is an mpg lower.
I don't smell any leaks.
Any idea of what causes this discrepancy?
Peter
However, I've just started calculating it from gallons going in versus miles travelled and it is an mpg lower.
I don't smell any leaks.
Any idea of what causes this discrepancy?
Peter
