I have not hit over 20mpg in my new (2003) E320 CDi yet..

[Donza]

Its got 19" wheels on. Surely they cant have that great an impact on the MPG?

I have yet to see even 20mpg. I have done a lot of town driving, and have yet to really open up with the car. Im waiting on the weekend when i drive it up to Newcastle 120 miles away.

Anyone have any ideas? Maybe its the ultra short journeys?

 

[barryj]

My M3 is only really driven around town during the week and is on 23mpg as is my 630, sounds wrong to me but who knows how accurate the gauges are?

 

[Donza]

My M3 is only really driven around town during the week and is on 23mpg as is my 630, sounds wrong to me but who knows how accurate the gauges are?

Dont know mate. But its pretty scary MPG for a diesel. My A4 1.9 TDi does 50mpg!

 

[talltimtam]

Sounds like something is wrong...

Might be worth taking the car to a garage and asking them to have a look at it ?

I get 40+mpg on motorways and 32-38 mpg on local driving in my W211.

 

[recycled]

Are you sure you have not got a petrol engine in there?

 

[edgersoldchap]

I bought my W211 E320CDI (2004) 6 months ago and it's averaging 33 to 34mpg on rural driving, over 6,000 miles.

I found that there is a big temptation to floor it because of the available, neck-jerking power of the E320 straight six but with a light foot, you can get reasonable results.

 

[recycled]

how heavy is the foot , that is the mpg of an e55. < 20 mpg

 

[Donza]

Are you sure you have not got a petrol engine in there?

LOL. Nope its the diesel...

Like i say when i picked it up it had an MPG reading of19. I have driven it no more than 5 miles at a stretch. Maybe thats why.

I have only owned the car for around three days. And yes, sometimes i put a heavy foot down.

Like i say, when i am on the M62-M1, I will hopefuly see the MPG creep up a lot!

Maybe i should have bought an E55 instead!

 

[Dieselman]

Check the fuel computer against filling the car tank to tank.
Has the ECU had a remap, if so maybe it's over-fuelling at lower power settings/revs.
Is there any smoke.? Have the EGR valve and ECU map checked.

5 mile journeys are not going to help at all.

 

[whitenemesis]

Good God! Within 5 miles I see 38 - 40 mpg

 

[crockers]

For a quick trot into the village less than 2 miles i get 32 mpg...once around 5 miles mid 30's are showing ....

Is yours the straight 6 or the V6....?

The straights are slightly better than the newer V6s -- mine is a V6

 

[seymansey]

Right now, i'd still say you are very much in the honeymoon period with your car, so you might want to give it a couple of weeks to let things calm down - have you reset your mpg counter?

 

[hawk20]

Nobody can say whether your mpg is good or bad. Driving short runs from cold in town: it depends how bad the traffic is and how much you use the awesome grunt of the 320cdi.

Wait till you do a run in lightish traffic and restrain the right foot

 

[Mactech]

That really does sound like a poor mpg figure, but very short journeys and a new toy could just be the answer. This week I have got 45mpg from the V6 in the S class in both directions to and from Yorkshire. (175 miles each way).
I have been experimenting with higher tyre pressures and with a lowered car and the results have been very encouraging. This can only be done with Airmatic suspension. The worst fuel mpg I see is with a trip into the city from cold and travel in town 26mpg. Try the open road and then compare

 

[glojo]

Short 5 mile journeys will kill the battery.

John

 

[Diesel Benz]

I believe the factory figure for this car is 10.3-10.6 l/100 km for city driving. That equals about 26.9 mpg but it is easy to get worse figures when waiting at traffic lights in a crowded city.

47 mpg should not be difficult when doing highway at decent, steady speed.

 

[timskemp]

Its got 19" wheels on. Surely they cant have that great an impact on the MPG?

I have yet to see even 20mpg. I have done a lot of town driving, and have yet to really open up with the car. Im waiting on the weekend when i drive it up to Newcastle 120 miles away.

Anyone have any ideas? Maybe its the ultra short journeys?

Ultra short? If we're talking under 2 miles then I'd expect that, especially if you idle it for a long period.

What was your previous car and how was its MPG in this type of usage.

I've regularly seen 18mpg shuffling 5 miles to our city centre, but consistantly 40-50% better than my last petrol car. Motorway cruising is where the biggest savings are, with the engine running while stationary any car is doing 0mpg.

 

[DieselE]

Your engine will not get up to normal running temperature in a journey as short as five miles. The straight 6 E320CDI needs eight miles in summer and up to twelve in cold weather to get properly warmed up. If you're constantly running short trips in heavy traffic then your fuel consumption will always be poor.

 

[davidjpowell]

From memory did you not have an E320 which was written off? How does it compare in consumption?

David

 

[Donza]

From memory did you not have an E320 which was written off? How does it compare in consumption?

David

Hi, the consumption on the previous E320 (This was the clocked one). The one that was written of was a E270.

The Previous E320 did around 29-35MPG.

I drove the car for two miles to the railway station this morning. The MPG picked up to around 24MPG.