C300 4Matic; 4,200 miles; Econ mode; 20 miles each way -- 18 highway; with lots of traffic (Half the time the 20 mile trip takes 27 minutes; the other half the SAME trip takes 45-55 minutes); overall MPG is 29.4.

However, when the I make the trip in 25-27 min -- the trip is 35+ MPG; when I make it in 45-50 min its 22-24 mpg; when the same 20 miles takes 60 - 75 min; its 21 min.

I find open highway mileage to be 35 - 38 mpg sustained; and heavy traffic (literally stop and go) to be ugly

Yesterday night I was able to reach about 42 MPG or 5.6L/100km 90% highway and 10% city traffic...all in Eco mode.

Pretty impressive for a C300 4 matic I was able to do 6,4L/100km (37 MPG) with my old C250C rear wheel drive. Very happy of the new vehicle!

I was disappointed with mine at first, but it's gradually trending better. Here's the consumption over 10k miles since January. The car has done exactly the same driving every week.




Still a long way from the 62mpg combined figure that Mercedes tout though. This was in a mix of comfort and eco settings.

Best I've seen on mine was 6.4 liters/100km in leisurely rural driving.

On the highway, at 120km/h I get between 6.5 and 7 liters/100km.

I only use Comfort Mode. Eco mode is too sluggish.

C400 4MATIC
Lifetime at 19,600 miles 24.2 - 70% highway at 80-82mph, 30% never warm up engine 2 mile runs to work
Best 33.6 mpg on recent 180 'Sunday' drive on 2 lane rural road averaged 52 mph

I have driven today from folkestone (eurotunnel) to zurich, switzerland (926km) at roughly 140kmh on the motorway and I had 1/4 of a tank remaining. I think that's pretty phenomenal

See attached - I did not have a photo for the 150 mile journey, but achieved > 80mpg on a 56 mile journey. Other photo shows averaging over 62mpg on >700 miles.

I have the car for one week now and the consumption is stunning. Its C220d my16 and i drive it in Comfort mode. I drive it a bit more constant compared to the Alfa (9,5l/100 km, 25 mpg) but the consumption is much lower 4,9l/100km (48 mpg) on the highway to 5,6 l/100 km (42 mpg) in the city. The proof that I don't drive slowly is the fine for speeding (135 km/h (80 mph) in stead of the alowed 120 km/h 75 mph) I already got :-(

I think we should state our engine size and fuel. As not all of us would know what engine is fitted to each model.

I have a W205 2litre petrol. Less than 1000km on odo. I have done one highway run at 110kph and 7.1 l/100. Around town, close to 12 l/100.
I think the motor is still. A little tight, so things should improve.
I have just done the first refuel and used 98RON premium fuel. I will report the next fuel economy check.

Is a C200 petrol in the UK the same as the C300 in North America?

The UK C200 has either a 1.6 or 2.1 Litre Diesel OR a 1.9 Litre petrol. There is also a 220d (not sure what that is) and a 300 hybrid or a 350, and a C63 etc.

Australia has
C200 petrol 1.9L or or 1.6 Litre Diesel,
C250 (1.9L Petrol or 2.1L D) with more bells as standard, a C300h DSL/ hybrid only and the AMG C63

I suspect that the 1.9L AU engine is the same as the "2L" US petrol ?

US seems to start with a higher grade that C200. So C300 is the start model. By my brief research the C300 simply has more bells and whistles than C200 as a base model. And of course is so much cheaper than AU. I paid around
AU$70K for a C200 with a few extras. Many standards for AU are options for US and vice versa.
Many of my "Option Packages" have only some of the US options.

I have the following,
Keyless GO but not keyless entry and NO Sirius as that doesn't work in AU.
Comand Package with DAB (digital via FM) radio.
Seat Comfort Package - Memory seats and heated only
Vision Package - Sunroof and LED Intel Light System
Auto Parking is standard in AU.
19inch wheels which includes front Air Dams with different trim. Different from US wheels.

There may be some things I have missed but that is the basic difference !

Confusing !!

In Europe the C200d is always a Renault 1.6 diesel engine. The C200 has a 1991cc petrol engine. The C350e is the (pug-in)hybrid version of the C200. There are also the C160 and C180, that have a 1.6 Renault petrol engine. Here the C160 is the tuned down version of the C180.

Next to that there are the C220d and the C250d. Both have a bi-turbo diesel engine. The C220d (170hp/400Nm) is the tuned down version of the C250d(204/500). At low revs the small turbo is active, at higher revs the larger turbo also kicks in. The result is that the power is just always there. And that at great fuel economy. There is also a hybrid version of the C250d called the C300h.

Wow that's unbelievable (but I believe you); how many miles are on you car now? Have you verified the computer with actual mileage / fill-up?

The best I've averaged is in the low 50s (imperial) and that's with a light foot in Eco mode with 5,000 miles on the clock. I live in a hilly area, so whilst the engine cuts out going down the hills to save fuel, it more than compensates going back up again. It's not really that much better than my old 335d when driven with a light foot - I could achieve in the high 40s in the BMW. Hopefully it will improve with age.

I had my first "proper" run last week - a ~450 mile round trip from Dorset up to Nottingham. Photo below is from the return leg - I was very impressed at the figures (I used to struggle to average more than ~60mpg in my old 118D).

Worth noting that whilst driving sensibly, I wasn't aiming for crazy MPG figures - mix of driving (although pretty much all Motorway / A Roads) including quite a few "spirited" moments

My average mpg is 34.. That's averaged over 18000ish miles in 9 months in my C200 petrol driven fairly hard most of the time.

Had my C250D for two weeks now and have around 300 miles on the clock.


My current average is 47 mpg (and climbing)
My best motorway so far is 61.2 mpg (about 60 miles)


I have the car set on Comfort, Sports Steering, Stop-Go OFF, Normal climate on Auto


My old W204 C220D got 55mpg on the same motorway journey stated above

I'm getting about 14-15 mpg. Mostly stop and go city (5-6 miles back and forth to work every day) but some highway and weekend driving, with all different sorts of settings. Seems pretty close to my previous 328, which was probably a bit worse on gas but hard to tell until we get to winter months when mileage goes down.

Just curious.. is the mpg display shown here on a diesel or hybrid? I only have a short term fuel consumption display showing the last few hours (2016 C300 gas engine in Canada).

Thanks

C450 AMG here. 30 mpg highway and 22 mpg city after two tanks.

Bensales drives a diesel. I have a hybrid and can't find that screen either - only the last 15 minutes. Anyone help?

I live in the Washington DC area (darn you guys with your metric systems), and traffic here is pretty horrid. My wife's C300 4Matic is getting about 27-28MPG with driving that averages about 30mph. This is very impressive since her previous 2012 C300 4Matic was getting about 20-22MPG with the same commute.

I am really happy with this car in terms of fuel consumption. She used to drive a Prius so we've seen what a truly fuel efficient vehicle can do. But it does warm my heart just a little that we are not being as wasteful as we used to be.

Those numbers are pretty high. I drove the C200 petrol with 2 liter motor. I get the same numbers as you do. A month ago my car started using to much fuel. On highway it used 11.7l/100km and it only went up! So I got to my local dealer and they installed a software update. Now I get 7l/100km on highway and less than 10liter/100km in city. Have a look at my consumption in the video. Around 8.3 l/100km on average.

I do wonder if mine's OK, day-to-day I'm only getting 35-42mpg and even on a run back from France it only managed 51.3mpg.

This is nice, I’ve hit 41



Nice, I’ve hit 41.2 once in my 2015 c300 4matic

I usually get 44 MPG, sometimes more, but my model is diesel