Hi All recently bought a Mercedes e class e280 cdi w211, not happy with fuel economy is something wrong?

[Mactech]

As others have said, there is a huge clue in the average speed.
My long distance V6 diesel car has an average speed of over 50mph at 42mpg in the year I have owned it.
My little EV has as average speed of just over 30mph as it is used mainly on short, mostly rural, local runs.
The only time my average speed is anything like yours is when out on foot with the (very bouncy!) dogs.
I did have a S211 E280 some years ago which returned over 40mpg for me and about 30mpg in my wife’s more local runs.

 

[6cyl]

My car has the same engine, but in a higher state of tune 320. I get 700 miles to the tank on the motorway. It warms up to >80c very quickly and stays there.
Around town I get about 26mpg. My long term average is 38 mpg as I only really use it for long journeys. If I drive it gently I get 44mpg. I always use Shell V Power gas to liquid diesel and the DPF hardly needs to regenerate.

Below is a photo of my OBC, over 8500 miles I've been getting 38.2mpg at an average speed of 45mph. Most of that, say 90% was at least the national speed limit, very often more. That's almost 700 miles on one tank of premium diesel. The cheap stuff is dirtier and gives less range. Dirtier = more region cycles which lowers the fuel consumption even more.

For short journeys (under 70 miles basically) I use a Nissan Leaf EV. It's perfect for the job.
Diesels are only good for long journeys (especially if > 1.6l), this applies to all makes and models.

 

[Smiley]

The OM642 is not as economical as the previous straight 6

This is true. And it is by some margin - approx 20% difference ime.

 

[Mactech]

My car has the same engine, but in a higher state of tune 320. I get 700 miles to the tank on the motorway. It warms up to >80c very quickly and stays there.
Around town I get about 26mpg. My long term average is 38 mpg as I only really use it for long journeys. If I drive it gently I get 44mpg. I always use Shell V Power gas to liquid diesel and the DPF hardly needs to regenerate.

Below is a photo of my OBC, over 8500 miles I've been getting 38.2mpg at an average speed of 45mph. Most of that, say 90% was at least the national speed limit, very often more. That's almost 700 miles on one tank of premium diesel. The cheap stuff is dirtier and gives less range. Dirtier = more region cycles which lowers the fuel consumption even more.

For short journeys (under 70 miles basically) I use a Nissan Leaf EV. It's perfect for the job.
Diesels are only good for long journeys (especially if > 1.6l), this applies to all makes and models.

Like you I tend to use a different car for different lengths of journey. However whilst diesels are best for higher mileage, I disagree they are only good for long journeys.
If you add a small dose of mild hybrid to a V6 3 litre diesel as on my Audi A8 you can get the best of both worlds..
.
...but it was just too long to fit in the garage

 

[6cyl]

Machtech - true re hybrid, though the extra complication of both powertrains would worry me.

 

[mondotex]

My car has the same engine, but in a higher state of tune 320. I get 700 miles to the tank on the motorway. It warms up to >80c very quickly and stays there.
Around town I get about 26mpg. My long term average is 38 mpg as I only really use it for long journeys. If I drive it gently I get 44mpg. I always use Shell V Power gas to liquid diesel and the DPF hardly needs to regenerate.

Below is a photo of my OBC, over 8500 miles I've been getting 38.2mpg at an average speed of 45mph. Most of that, say 90% was at least the national speed limit, very often more. That's almost 700 miles on one tank of premium diesel. The cheap stuff is dirtier and gives less range. Dirtier = more region cycles which lowers the fuel consumption even more.

For short journeys (under 70 miles basically) I use a Nissan Leaf EV. It's perfect for the job.
Diesels are only good for long journeys (especially if > 1.6l), this applies to all makes and models.

Thanks for your time.
i'm trying to figure out if my car does have DPF Filter,
Which year is your car?

 

[W1ghty]

Thanks for your time.
i'm trying to figure out if my car does have DPF Filter,
Which year is your car?

My 2009 E320cdi doesn’t ,
If your exhaust insides are blacker than hell then you don’t have one (or someone removed it )

 

[92Adam]

I have 07 s211 E280cdi with about 190k on the clock…I primarily use it for long runs & I can assure it gets used properly up & down the Motorway’s…I tend to find it averages between 30-40mpg & that’s with a heavy right foot…
Just an indication below of usage throughout the year…

 

[Mactech]

Machtech - true re hybrid, though the extra complication of both powertrains would worry me.

The mild hybrid on VW group 48v architecture is really very simple and there are less not more things to go wrong. A small battery under the boot floor and the starter motor and alternator replaced by a single 'starternator' driven by a toothed belt off the front of the engine.
Not only does it give instant and powerful starting with no bendix to wear, but is powerful enough to maintain a 70mph speed for about 50 secs with the IC shut down. The change over is totally seamless and you can see the sort of mpg that a 2 tonne limo can be capable of.....and you never have to it plug in!

 

[6cyl]

Thanks for your time.
i'm trying to figure out if my car does have DPF Filter,
Which year is your car?

no problem, we're mostly friendly here

from memory all post 2005 diesel cars have (or had) DPF.
Some (naughty) people remove them, they're the ones driving cars or vans with big plumes of smoke behind them (if it wasn't tuned properly) as inevitably they'd be over fuelling. Even properly tuned ones smoke, but normally just a little puff when accelerating.

I know my 2009 CSL 320 CDI has a DPF as the DPF differential sensor was replaced not long after I bought it. It has been very reliable for the last 7 years.

 

[Smart320]

My 2008 E320 did not have a DPF

 

[Smart320]

The data card confirms it never had one

 

[DSM10000]

no problem, we're mostly friendly here

from memory all post 2005 diesel cars have (or had) DPF.

Not correct.

My 2008 320 CDI didn't have one fitted at production. It was a factory option.