mistertonyn

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.

Untertürkheim

These number vary greatly depending on the driving style, environment, etc. Keep in mind that comparing the worst diesel numbers to the best gas numbers is not accurate, some gasoline owners are getting 15 or worse.

The Bluetec is on average much more efficient than than an E350, period.

Mnymaker

I got 82,000 on my 05 CDI and I would back up that statement 100%

CE750

I think there is no argument anymore that the 2005-6 CDI's get significantly better milage than the newer V6 and BlueTech models..

musicmax

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?

CE750

I think it strongly depends on the kind of "City" driving you do and your driving habits. I am from NC so I"m not sure how traffic has gotten where you live but if it's all stop and go and congestion, stop lights that's a big factor. I'm in Phoenix where (baring rush hour), most of our streets are wide, with 45-50 mph flow and stop lights are far apart.. I took my car in for a service C recently and with 23000 miles and 3 years behind it, the dealer was shocked at my brake wear.. he said I had some 70% remaining. Even for AZ that is good, but I told him.. I am VERY conscience of my braking energy management and that I almost never drive Accelerator to brake... I usually coast a lot and depending on whether I have a red light or green light ahead, I manage my speed accordingly.. this not only saves me fuel, but brakes..

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...

musicmax

No, I'm in North Carolina. (Oh, and it's "you're", not "your".)

CE750

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.

pinebaron

I think "your" is correct in this context. You're is for "you are" and "your" is as it belongs to you. "your driving habits" since habits are his.

musicmax

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.

Diesel Benz

I tried to go back and skip all the spelling issues and found your (first?) post stating you have a Renntech tuned car, perhaps that explains the difference. A good tune-up would only shorten the engine life, not ruin the mpg figures but perhaps you have something wrong with your tuning.

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).

musicmax

OK Thanks.

"A good tune-up would only shorten the engine life"?

Diesel Benz

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.

harkgar

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.

CE750

I so agree... wish it was feasible.

captret

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.

CE750

WOW! 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?

Fatjoe4

A trip comeing back from Minnesota this fall 40.7.
I was a vary happy camper!

SEC1939

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.

brogan

Doing 80 MPH heading out of Orlando, FL with the air temp about 90, 2 adults, trunk full and A/C on, my computer indicated 40 MPG.

toyman

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+-.

Mercedesa.Net

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?

kajtek1

Make sure you are not confusing Imperial gallons with US gallons.
US versions are rated at 201 HP and as DB posted - have different gearing.

Plutoe

This is more kiddy benz BS----there is no different gearing---the poster is a known spammer with very little technical knowledge!!

Mercedesa.Net

That's my photo from extra-urban.