C180 petrol courtesy car just 27mpg?

[bigmacplease]

A B170 petrol and it is actually a 1.7

 

[Moth]

My ancient S124 (2.2L, 150 BHP) is not far off a new C180... for economy at least. In every other area, my aged M111 is not flattered by comparison (though it remains to be seen if the newer motors can rack up the miles like these bullet proof old lumps.)

Rather than being achieve much better mpg's through years of development, the real advancement of MB petrol engines is their ability to carry the steadily increasing weight of new cars more easily and at higher speeds without a lessening of fuel efficiency - all that while obeying the rapidly tightening emissions regs.

For a lower mileage life-style, the C180 would be much nicer to own with a petrol engine, and maybe cheaper too. I hope MB continues to build decent 4-cylinder petrol units for those customers who don't need to hammer up and down motorways every day - they may not be the fastest or most refined, but they are much more enjoyable than the equivalent diesels when saving money isn't the priority.

And let's face it, who buys an MB to save money?

 

[Dieselman]

My ancient S124 (2.2L, 150 BHP) is not far off a new C180... for economy at least. In every other area, my aged M111 is not flattered by comparison (though it remains to be seen if the newer motors can rack up the miles like these bullet proof old lumps.)

According to your information bar, yours has 108,000 miles, which is pretty low mileage.
Be careful of timing chains on the older 4 cylinder petrols, they do let go.

 

[BigSilverEstate]

First if all, this is a 1.6l engine, not 1.8 as someone posted on page 2.

Sorry my bad, it is indeed a 1.6 turbocharged engine. I think the power and torque figures were correct though.

Is this the car that at one point had a 1.8l engine for the manual and a 1.6 for the auto?

 

[Paul/]

You can't beat a nice icecream blowy while were on the subject

Not Mr.Softee.

And be careful with that flake.

 

[Moth]

According to your information bar, yours has 108,000 miles, which is pretty low mileage.
Be careful of timing chains on the older 4 cylinder petrols, they do let go.

Point taken - of course I have plenty of maintenance to look forward to! Timing chain shouldn't be an issue though - my (specialist) indie reckons the timing chains on M111's usually last the life of the car (dual-row timing chain, very robust indeed). He does check them regularly on cars with 150,000 or more for peace of mind, and has changed a couple that weren't badly stretched but that rattled a bit and bothered the owners. He reckons he's never seen one let go yet. Off topic, sorry.

 

[Dieselman]

I've known three go between 150k and 200k miles, so worth keeping tabs on.

 

[Moth]

I've known three go between 150k and 200k miles, so worth keeping tabs on.

Cheers - first-hand experience can't be ignored. I'll definitely keep an eye on it as you say.

 

[Davidkn]

I had a c180 courtesy car recently, was brand new, 30 miles on the clock, I managed late 30's mpg, and I wasn't driving it like a nun, so I don't see how people get late 20's.

I get late 20's in my 5.5l v8! I even get around 32mpg on a motorway run, 4 cylinder and Eco modes FTW!

Stop start is also brilliant, people who don't like it are strange, it's nice and peaceful stopped at traffic lights, works brilliantly, can't see a downside personally.

 

[BenzedUP]

No way I will not be happy if I see any more than 21mpg on my AMG, if I see it go over 21mpg i'll make sure i'll drive it properly and put the figures down again!

 

[alistairgd]

I had a c180 courtesy car recently, was brand new, 30 miles on the clock, I managed late 30's mpg, and I wasn't driving it like a nun, so I don't see how people get late 20's..

Did you empty a full tank to get a representative consumption figure, or was that on a motorway commute?

And what is "late 30's" - did you get 37,38,39...?

 

[Davidkn]

Did you empty a full tank to get a representative consumption figure, or was that on a motorway commute?

And what is "late 30's" - did you get 37,38,39...?

I had it for a week and it was a mixture of motorway and traffic, so id say a fair mixture of the two, and i used nearly two tanks, i can't remember the exact figure as i didn't know id need to keep it on file but i think it was 38.

The time before i had a diesel, not sure on the model but it was getting in the 40's.

My SLK55 on a run up to manchester from high wycombe got 33mpg, i was more impressed by that than the petrol C180, i was expecting more like 40+ from that, but i guess its a small engine in a heavy car, so needs to work harder to get around, hence using more fuel, this was in eco mode and stop start was on too. It was a sept 2012 car, and like i said, was brand new, i was probably one of the first to take it out. It had the centre console rattle too......

 

[Dieselman]

It had the centre console rattle too......

Proof it's a real Mercedes, not a cheap Chinese knock off.

 

[alistairgd]

Proof it's a real Mercedes, not a cheap Chinese knock off.

Hehe. Not to stray off topic too much, but I get a crinkly sound from behind the aircon controls, like a dry leave being tossed around, but obviously not.

Sound familiar anyone? It's a bit annoying but I don't fancy having the dash all ripped out to investigate.

 

[steve333]

Hehe. Not to stray off topic too much, but I get a crinkly sound from behind the aircon controls, like a dry leave being tossed around, but obviously not.

Sound familiar anyone? It's a bit annoying but I don't fancy having the dash all ripped out to investigate.

That'll be the mice chewing through your wiring loom

 

[Davidkn]

Hehe. Not to stray off topic too much, but I get a crinkly sound from behind the aircon controls, like a dry leave being tossed around, but obviously not.

Sound familiar anyone? It's a bit annoying but I don't fancy having the dash all ripped out to investigate.

Yeah, I get that sometimes in my SLK, I presumed it was the vents opening and closing behind the scenes for the climate control

 

[alistairgd]

Readings

Okay so tonight I had a short trip on a motorway with a little urban at the start and finish, nice chance to squeeze out the absolute max realistic MPGs.

So driving with ultimate MPG tactics and cruising at 70mph, with aircon off this is what I managed to get...

I am relieved to see at least over 35 mpg is feasible (according to the onboard computer)

 

[Davidkn]

I managed 31.5mpg on my little trip this morning, that was after coming across an Audi S4 too.....so a couple of mpg down on my last trip.

I'll take that.

 

[mika]

Mercedes seemed to have developed a knack for making petrol and diesel engines that seem to do similar miles to the gallon regardless of engine size.

I'd noted that knighterrant's C350 petrol was achieving around the early 30's.

Our E350 petrol estate has returned 29.4 mpg over 3600 miles to support your theory

E350 petrol estate
more recent info shows its improving albeit with some motorway miles
i have covered 10500 miles now
last 3000 miles - 32mpg at an average speed of 40 mpg