E-Class (W211) 2003-2009

CDI mileage? Mine not so hot

Thread Tools
 
Search this Thread
 
Rate Thread
 
Old 07-14-2004, 04:22 PM
  #1  
Junior Member
Thread Starter
 
chemo's Avatar
 
Join Date: Apr 2004
Location: usa
Posts: 44
Likes: 0
Received 0 Likes on 0 Posts
w211 cdi 2005
CDI mileage? Mine not so hot

Love my car. 2200 miles with 70%city and 30% highway. Only averaging 24 or 25 mpg. Normal? I do not drive with a lead foot, I have other cars for that.

Are my expectation just too high?

chemo
Old 07-14-2004, 04:57 PM
  #2  
MBWorld Fanatic!
 
Barry45RPM's Avatar
 
Join Date: Mar 2004
Location: Ft. Lauderdale Area, USA
Posts: 5,017
Likes: 0
Received 15 Likes on 15 Posts
2015 ML 350
Nope, break in has just begun.
Old 07-14-2004, 05:07 PM
  #3  
Super Member
 
Fastbuck's Avatar
 
Join Date: Nov 2003
Location: Scotland, UK
Posts: 586
Likes: 0
Received 2 Likes on 2 Posts
2019 Mercedes Benz S500L AMG Premium Plus
Originally Posted by chemo
Love my car. 2200 miles with 70%city and 30% highway. Only averaging 24 or 25 mpg. Normal? I do not drive with a lead foot, I have other cars for that.

Are my expectation just too high?

chemo

Remember the difference between US and imperial gallon will play a part in reducing that number from previously published figures from other parts of the world.
Old 07-14-2004, 06:12 PM
  #4  
Senior Member
 
saffrontiger's Avatar
 
Join Date: May 2004
Location: Lone Star State.
Posts: 416
Received 2 Likes on 1 Post
W211 2005 CDI, X166 2013 350 BT, 997.1 2008 C4S
Originally Posted by chemo
Love my car. 2200 miles with 70%city and 30% highway. Only averaging 24 or 25 mpg. Normal? I do not drive with a lead foot, I have other cars for that.

Are my expectation just too high?

chemo
Well, depends on several factors:
1. Break-in. I've heard for Diesel engines, the break-in just begins at 10,000 miles
2. What do you have the transmission set at comfort Vs. sport? Comfort will defintely increase your mileage however it may feel sluggish
3. Even in city driving I am managaing 28MPG. Try keeping the revs below 3k rpm and you will see a major difference. Highway I'm getting close to 33mpg with 1500 miles on the odometer in my new 320CDI.

Hope this helps
Old 07-14-2004, 06:47 PM
  #5  
Junior Member
 
rbordel's Avatar
 
Join Date: Feb 2004
Location: Texas
Posts: 60
Likes: 0
Received 0 Likes on 0 Posts
05 E320 CDI
Most of my driving is highway (70 mph on cruise control) and I have been getting 35.5 - 37.5 mpg. The car has about 7000 miles on it. I've noticed there is a definite difference in mileage depending on whether you are driving with the prevailing wind or against it. I do a lot of north - south driving and this time of year in Texas the wind is usually from the south. I consistently get better mileage when northbound.
Old 07-14-2004, 08:57 PM
  #6  
Super Member
 
DavidNJ's Avatar
 
Join Date: May 2004
Location: Warren, NJ
Posts: 758
Likes: 0
Received 1 Like on 1 Post
'05 E320 CDI;'04 S2k;'94 Supra TT;'10 QX56;'38 Buick;98 Port City Offset Late Model
Mileage in a diesel is better than a spark ignition when they are both operated at part throttle. The diesel responds by injecting less fuel. The spark engine by forcing the the engine to suck air past a small opening.

If your city driving is stop and go with bursts of acceleration, than mid-20s is probably about right. In a similar circumstance, a spark ignition engine will probably be in the mid-teens.

Highway driving at US-legal or quasi-legal speeds (55-85 mph) should be in the low-to-mid thirties. And yes, soft-pedaling could yield more. However, why buy a $60k car to soft-pedal?
Old 07-15-2004, 01:32 AM
  #7  
Senior Member
 
johna1's Avatar
 
Join Date: Sep 2003
Location: Christchurch, New Zealand
Posts: 351
Received 4 Likes on 3 Posts
17 E220D, 11 E350 CDI(sold), 06 CLS320 CDI (sold), 05 Cadillac DeVille (gone), 04 E320 CDI (sold)
Temperature seems to make quite a difference too, I have noticed my fuel consumption worsening as the weather gets colder. Once the engine is at normal termp then the consumption is ok, but doing short distances in cold weather really hurts, I think more than it affects petrol engines.
Old 07-15-2004, 10:17 AM
  #8  
ATS
MBWorld Fanatic!
 
ATS's Avatar
 
Join Date: Apr 2004
Location: Canada
Posts: 1,492
Likes: 0
Received 0 Likes on 0 Posts
2004 E500 / 2001 C240
Also, doesn't cruise control affect your mileage .
Old 07-15-2004, 12:08 PM
  #9  
Senior Member
 
marc777's Avatar
 
Join Date: Dec 2002
Location: England
Posts: 278
Likes: 0
Received 0 Likes on 0 Posts
2012 CLS
Temperature is key. I found that on a daily commute of 5 miles the MPG was relatively poor and this is becasue the engine hardly had time to warm up.

On a 20 minute trip or more I now get 38mpg and I have a lead foot! Thats UK gallons by the way.

It has also got better as the car has got older.

If you get anything in the 20's on a run then you have a problem.

At 60-70 mph on a run I can see low 40's easy.

Marc
Old 07-15-2004, 12:33 PM
  #10  
Senior Member
 
kort677's Avatar
 
Join Date: May 2004
Location: NJ
Posts: 277
Likes: 0
Received 0 Likes on 0 Posts
'05 e320 cdi, '05 lexus rx330
Cool

Originally Posted by atssystems.com
Also, doesn't cruise control affect your mileage .

usually only for the better
Old 07-15-2004, 01:07 PM
  #11  
Super Member
 
Fastbuck's Avatar
 
Join Date: Nov 2003
Location: Scotland, UK
Posts: 586
Likes: 0
Received 2 Likes on 2 Posts
2019 Mercedes Benz S500L AMG Premium Plus
Originally Posted by johna1
Temperature seems to make quite a difference too, I have noticed my fuel consumption worsening as the weather gets colder. Once the engine is at normal termp then the consumption is ok, but doing short distances in cold weather really hurts, I think more than it affects petrol engines.


I agree. It was taking about 11 miles to get to full temp when I got my car in March. Now the weather is a little better!!, it heats up in 8.
Old 07-15-2004, 04:14 PM
  #12  
Member
 
spubar's Avatar
 
Join Date: Mar 2003
Posts: 149
Likes: 0
Received 0 Likes on 0 Posts
What does CDI stand for?
Old 07-15-2004, 05:22 PM
  #13  
Super Member
 
Fastbuck's Avatar
 
Join Date: Nov 2003
Location: Scotland, UK
Posts: 586
Likes: 0
Received 2 Likes on 2 Posts
2019 Mercedes Benz S500L AMG Premium Plus
Originally Posted by spubar
What does CDI stand for?

Depends where you read. Two commonly used descriptions are:

Common Rail Diesel Injection
Common Rail Direct Injection
Old 07-15-2004, 06:18 PM
  #14  
Senior Member
 
saffrontiger's Avatar
 
Join Date: May 2004
Location: Lone Star State.
Posts: 416
Received 2 Likes on 1 Post
W211 2005 CDI, X166 2013 350 BT, 997.1 2008 C4S
Common Rail Direct Injection- correct

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 


You have already rated this thread Rating: Thread Rating: 0 votes,  average.

Quick Reply: CDI mileage? Mine not so hot



All times are GMT -4. The time now is 11:38 PM.