C180 petrol courtesy car just 27mpg?

[Creepy coupe]

Indeed. Except everyone else would be advised to keep a watching brief, 'cos I've a feeling that our ladies are riding on the leading edge of engine evolution, and we're all destined (forcibly) to join them there at some not too distant point As I mentioned on another thread, if I'm ever going to tick the V8 ownership box, I'd better do it PDQ.

I've just given up a V8, and boy do I miss it. I do like driving the SLK though. But obviously my driving style has change while in it. Honest

 

[Paul/]

My SLK350 has averaged 25.5mpg over the last 5 years. Mainly urban type use, S mode and aircon usually engaged. It doesn't get thrashed (much), not driven with economy in mind.

Makes the 200 look rather thiryst!

Where's a sobbing emoticon when I need one?

 

[V12]

Which all goes to prove that the part of every car that has most influence on its fuel consumption is the nut immediately behind the steering wheel. All the torque/power & diesel/petrol rubbish spouted by the likes of DM whilst trying to sound clever is of absolutely no consequence in the real world.

Yes, driver plays a huge part I agree.

There are two types of thread on this forum :
1. My car gets xx MPG, what should it get?
2. I want x Mercedes, is it any good on fuel?

For the 1st type of thread I think it's fair to say the driver and driving conditions are always relevant. We also always learn over and over not to use the published figures as they do not help us in the real world.

For the 2nd type it is best when people draw comparisons between different cars they've owned whilst driving similar routes etc, over an extended period is excellent.

 

[st4]

Sounds like our Missus's have similar cars, with similar mileage. It will be interesting to compare over the next few months. Well for me and you anyway. Everyone else will be bored ridged

SLK250cdi. Efficient and with a remap, who knows what?

 

[Paul/]

SLK250cdi. Efficient and with a remap, who knows what?

Even without could be a good candidate- but it's one MB model/engine combo that I'd be bothered about it sounding the part too.

 

[Paul/]

For the 2nd type it is best when people draw comparisons between different cars they've owned whilst driving similar routes etc, over an extended period is excellent.

Not MB, but don't see why same principles don't apply-

I had various mods on the Integrale over a period of time. The one that impressed me most (that took me the most persuasion) was an improved manifold, which combined with a big bore straight through exhaust dramatically improved pull through the range- and got me to 27mg from usual 22/23. This was initially with the performance chip backed out (as I'd got tired of its toppiness for everyday use). Then when the performance chip went back in, the step change was even greater than before.

So is gassflow enhancement a magic bullet for improved efficiency?

Update... I do have the rolling road power/torque estimate printouts somewhere- off the top of my head:
standard = 220bhp
+chip = 265 bhp
+chip +manifold + exhaust + bigger turbo + some cylinder/piston fettling = 328bhp

 

[smillion]

I've just given up a V8, and boy do I miss it. I do like driving the SLK though. But obviously my driving style has change while in it. Honest

I know that feeling of giving up a V8, with the E55, Range Rover, Mustang and Maserati now gone .... The noise is what I think I miss most

Still, on the lookout for another V8, and recently came close to a Merc Pagoda from 69 fitted with a V8. Sacrilege on the one hand, heaven on another....

 

[ming]

In the real world my Renault Laguna diesel 2litre estate does 40mpg

My SL500 with more commuting stop/start driving nearly22mpg

Diesel is more expensive and I'm not convinced that the economy is that great really for a diesel when you factor in the early replacement of the DPF

 

[Palfrem]

My 1995 E36 returned 28.98 mpg on 308 gallons.

Best tank-to-tank 34mpg
Worst tank-to-tank 19 mpg

 

[HotJambalaya]

how do I see lifetime mpg on a C class?

 

[ming]

Frankly my dear ( as they say ) who gives a damn!

 

[BigSilverEstate]

how do I see lifetime mpg on a C class?

The OBD will show mpg since the last reset. If you have never reset it then it will show lifetime mpg. If it has been reset then I don't think there is a way.

Since coming on here I have learnt that real men use brim to brim measurements, never OBD readings, mind you

 

[Red C220]

I owned a "59" C180K sport estate auto and averaged 29mpg with a reasonable cross section of driving.

It had very little mid range shove, our C220 cdi is a vast improvement in economy and performance. *** will confirm it is the finest car money can buy

 

[bigmacplease]

But does it have a unusable wood floor?

 

[Palfrem]

The OBD will show mpg since the last reset. If you have never reset it then it will show lifetime mpg. If it has been reset then I don't think there is a way.

Since coming on here I have learnt that real men use brim to brim measurements, never OBD readings, mind you

It's good to dither at the pump on your return from paying and write your mileage on the fuel receipt. You can then look forward to entering the data on a spreadsheet when you get home.

Life don't get no better...

 

[mika]

Which all goes to prove that the part of every car that has most influence on its fuel consumption is the nut immediately behind the steering wheel. All the torque/power & diesel/petrol rubbish ... is of absolutely no consequence in the real world.

I think you have a point i almost always achieve the same or similar fuel consumption
E 350 petrol 29.4mpg
190E 1.8 27-28mpg
W124 280 27mpg
..ok the c63 does less
330i 29mpg ish
116i 31mpg

 

[LTD]

It's good to dither at the pump on your return from paying and write your mileage on the fuel receipt. You can then look forward to entering the data on a spreadsheet when you get home.

Life don't get no better...

If the OBD is calculating the mpg wrongly, how can you trust the mileage reading ?

 

[V12]

You can't. Every car over reads. Just not by as much as the obd does for mpg.

Sent from my GT-I9300 using MBClub UK

 

[BigSilverEstate]

If the OBD is calculating the mpg wrongly, how can you trust the mileage reading ?

I think this is a very important question... I had assumed that the odometer readings were probably pretty accurate but the fuel consumption measurements were not. If the car over-reads mileage bu under reads fuel consumption then these errors will tend to cancel out for the mpg calculations. I would very much like to hear the authoritative explanation of this.

 

[Deleted member 65149]

It's good to dither at the pump on your return from paying and write your mileage on the fuel receipt. You can then look forward to entering the data on a spreadsheet when you get home.

Life don't get no better...

And there's the added bonus that whilst you're dithering to locate your pen and pad, then note your mileage and fuel purchase, you'll be annoying the person behind you waiting to get to that pump. Upsetting another motorist without using a drop of your own fuel - heaven!