2009 220cdi sport Auto Fuel economy

[richiwildchild]

I have had my C220 estate for a couple of weeks now, but am unable to get anywhere near the fuel economy figures that I have found online. Apparently I am supposed to be able to get an average mpg of 41.5. My driving is done mostly on quiet A roads, and I have driven steadily with the gear selector in C for the last 2 weeks to see what sort of economy I could get. After 2 weeks the trip computer gave me a figure of 36.5mpg which I found shocking. Has anyone got any ideas?? I used to have an 2005 Audi A4 tdi s-line avant, and that would give me 42mpg on the same roads, and I was lead to believe that the Merc would be more fuel efficient?

 

[paul73mt]

if your looking at the 'book' figures then forget it. Its very hard to get near the MPG they quote unless your driving like miss daisy. Does your car need a service, tyre pressures ok? and did you have the A/C on these will all make a differance

 

[Dieselman]

Your car has a DPF and are renowned for giving low mpg.

Why drive in C mode? That will load the engine more when pulling away from rest.

 

[tonyc280]

i would be gutted if i were only getting that from a diesel

 

[Benza750]

It's a common complaint, merc diesels are not as fuel efficient as there Audi / VW diesels
You may get 40+ at steady speed on a good motorway run.

 

[ronjack]

I've fitted a multi map tuning box to mine (same model) and now get 39+ about the town and 51 on long runs

 

[t-dawg1]

View attachment 37021

That's on my 2003 C220 cdi. I even managed 60mpg last week doing a steady 60mph

 

[Deleted member 6183]

Your car has a DPF and are renowned for giving low mpg.

Why drive in C mode? That will load the engine more when pulling away from rest.

Sorry for the partial hijack.

DM's comment interests me greatly, I have always driven my Mercs in C mode and my current daily hack in D rather than S - same horse different jockey.

So, any experience in better fuel economy in a higher revving gearbox mode? Seems a little counter-intuitive to hold in a higher gear and change down sooner but more than happy to be proved wrong.

My preference for the C type gearbox mode is more about comfort but would sacrifice for better MPG.