What MPG are people getting?

[Red C220]

See sig below.

What I have found is the reality mpg and that displayed on the OBC are very different, so I log brim to brim fills and get actual mpg over the tank.

The SL mpg below is out of whack as I've only filled it once and it wasn't full when I picked it up from the dealer. Reality is somewhere in the 20's for the SL but that will iron out as the miles increase.

 

[gIzzE]

W205 C Class 2 litre Petrol auto bought October 2015

41.5 mpg Urban
64.2 mpg Extra Urban
53.3 mpg Combined

34 mpg Real life.

I don’t know how these car manufactures get away with their lies that real world motorists can never achieve.

What is really apparent to me is the massive difference a in mpg a short journey can have compared to a long journey. For the first quarter mile my car is doing around 10 mpg. After half a mile that will creep up to around 18 mpg. It is only after 15 miles on a motorway that figure will start to hit the mid to high 30’s as the figure has been pulled down by the first few miles so my average is never less than 34mpg per tank but never more than 35 mpg either .

It is down to owners not understanding the test.

The combined and the extra urban figure is done with the car up to temperature, using summer fuel and perfect ambient air temperatures.
It is basically 4 miles, accelerate to 70 and then slow down to 33mph to average 39mph.

If you try that then you will probably get the same results.

If you have wider than the 205.60.16 tyres fitted it will drop, if you have lots of options fitted it will drop, if you have the climate on it will drop, if you have a passenger in the car it will drop, if you have loads of stuff in the car it will drop.

So unless you drive everywhere at 33mph the official test tells you nothing, doesn't even let you compare cars.

I agree it is a crap test, but the car manufacturers are not to blame for the test, it is the testers.
What are they meant to do other than optimise their cars for the test? If they optimise them for 70-80mpg the test figures may look terrible and people might not buy their cars, as you have shown people are very ignorant when it comes to official mpg figures which only causes bitterness.

I always look at the US figures (remeber to convert to UK mpg) as their figures are generally spot on.

C250cdi UK Urban is 44mpg, the US figure is 28mpg city.

Which owner is going to be ****** off and which is going to be pretty happy?

 

[Awais93]

W211 e280cdi sport 44mpg on a good run

 

[Ajay Bhatoa]

Finally seeing much better results! Filled the tyres up with nitrogen and since then I'm getting much better mil she to my previous 27-31 ish mpg on a drive home from work.

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[renault12ts]

There is no way nitrogen in your tyres will improve your mpg...let alone by 6 mpg. If it was that simple we'd all be doing it. We aren't.

 

[Ajay Bhatoa]

There is no way nitrogen in your tyres will improve your mpg...let alone by 6mpg.

It's definitely done something as I've not altered how I drive, before I got 27 on a run home. Now it's 38! Maybe Mercedes have reset some ECU on the car as it went in for the panoramic roof to be repaired. But it's now shot up.


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[tali]

My 1.5dci Qashqai does 43mpg - mainly with lots of short journeys

 

[gIzzE]

Finally seeing much better results! Filled the tyres up with nitrogen and since then I'm getting much better mil she to my previous 27-31 ish mpg on a drive home from work.

Does it also fell floaty at high speeds now?

 

[Ajay Bhatoa]

Does it also fell floaty at high speeds now?

Not too much mate.. Still has some good road feel. Tbh the Merc compared to my old scirocco and BMW 1 series is far more 'floaty' anyway! I've had nitrogen in all my recent cars.. Definitely helped with the BMW run flats.


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[StuartK]

Wonder if I could get 27 of i filled my tyres. I've never checked the pressure

 

[uumode]

When I took my SL in for service the dealer gave me a 65 C220 cdi as a loan car. Drove from Chesterfield to Sheffield via A617 and M1. I achieved without trying 61mpg which I thought was very good. However a month or so later took my S500 for service, this time they gave me a 65 C200 petrol. Did the same trip to Sheffield at the same time of day and got 67mpg. With advancement in petrol engine cars why do people buy a diesel car?
I was very impressed with the C200 almost as smooth as my S500, not as quick though.

C200 petrol did 67mpg... wow.
I don't get anywhere near that with my C200 petrol auto, and I'm pussy footing it around still, as my car is not run in yet.

Getting about 23mpg pure urban and about 44 mpg on long motorway runs @70mph on distronic cruise.

 

[markjay]

...Getting about 23mpg pure urban and about 44 mpg on long motorway runs @70mph on distronic cruise.

This is what I am getting on my W203 C180K.

 

[gIzzE]

Not too much mate.. Still has some good road feel. Tbh the Merc compared to my old scirocco and BMW 1 series is far more 'floaty' anyway! I've had nitrogen in all my recent cars.. Definitely helped with the BMW run flats.

I was being sarcastic about feeling floaty. I meant the nitogen must have made the car really light to get 33% better MPG.

You sure they haven't just filled them to max pressures when filling with nitrogen?

How are you finding it coming from the BMW?

Did you ever run the 1 Series on proper tyres?
I loved our 120 and 123 M-Sports when we got them on proper tyres, hated them on run flats.

 

[uumode]

I've a 2014 S204 C180 (1.6 turbo petrol auto). Did a run from the New Forest to Gatwick and back very early yesterday morning - pretty cold weather - and averaged 47mpg. A really good run up, traffic back, averaged 53 miles an hour according to the trip.

I'm pretty much only using BP Ultimate (97RON) now, it maybe in my head, but I can tell the difference in the smoothness of the engine, and I've decided (without any evidence) that this must mean the mpg improvement pays for the higher pump price. I also run the car on Michelin Cross Climate tyres, on 16" wheels, very impressed with these.

What fuel / tyres do you have?

That's pretty good MPG.
If you notice the difference with BP Ultimate, if you haven't already give Shell V-Power Nitro+ a whirl I found it to be even better (could be in my head too)
and Castrol EDGE 0W-40 A3/B4 (MB-Approval 229.3/ 229.5)
Product Range | Castrol EDGE | Castrol Engine Oils | Car | Products | Home
Engine appears to rev more freely than Mobil 1 (again could be in my head).

 

[StuartK]

That's pretty good MPG.
If you notice the difference with BP Ultimate, if you haven't already give Shell V-Power Nitro+ a whirl I found it to be even better (could be in my head too)
and Castrol EDGE 0W-40 A3/B4 (MB-Approval 229.3/ 229.5)
Product Range | Castrol EDGE | Castrol Engine Oils | Car | Products | Home
Engine appears to rev more freely than Mobil 1 (again could be in my head).

Can honestly say I get the same ish miles ever time I fill up with 95 Ron, V power or ultimate.

210 ish to a tank on my daily commutes.

 

[markjay]

I can't compare... I only ever used V-Power.

 

[uumode]

This is what I am getting on my W203 C180K.

Not overly impressed so far with the MPG of the newer C200 W205 given the advantages it has

• 7 gears (runs only about 2000rpm @70mph)
• Stop start engine in urban driving
• Eco mode with coast on auto (but for some reason only coasts in gears 5 to 7, not all gears)
• Super lean burn direct injection engine
• More aerodynamic

 

[ItalianTuneUp]

S320CDI W220 3.2 litre diesel I6 engine.

Best ever is 52.1mpg on motorway at 50mph on cruise when nearly on reserve.

50mpg ish at 50mph.
40mpg ish at 70mph.
37mpg ish at 80mph.

 

[markjay]

Not overly impressed so far with the MPG of the newer C200 W205 given the advantages it has

• 7 gears (runs only about 2000rpm @70mph)
• Stop start engine in urban driving
• Eco mode with coast on auto (but for some reason only coasts in gears 5 to 7, not all gears)
• Super lean burn direct injection engine
• More aerodynamic

Keep in mind that these are onboard computer figures... they may or may not be accurate:

Also note that I always drive in S, not C, possibly C would have given slightly better results, I do not know.

 

[Tim203]

S203 220 CDi 38 urban,41 (just) on motorways . Considering remap or box but can't make my mind up.