C Class (W205) C 180 BlueTec,C 200 BlueTec,C 220 BlueTec,C 220 BlueTec BlueEfficiency,C 250 BlueTec,C 300 BlueTec Hybridplus,C 180,C 180 BlueEfficiency,C 200,C 250,C 300,C 400 Plug-in Hybrid,C 400

Fuel Efficiency on W205

Thread Tools
 
Search this Thread
 
Rate Thread
 
Old Aug 30, 2015 | 07:38 PM
  #1  
nbkvig2's Avatar
Thread Starter
Junior Member
 
Joined: Jun 2015
Posts: 39
Likes: 2
From: Southern California
2015 C300
Fuel Efficiency on W205

Just wanted to gauge at what's everyone getting in terms of mileage out of their 2015 C class. So far I'm on my first tank of gas, driven in Comfort mode the entire time pretty much due to break-in period, so far got 29x.xx with 4 bars remaining and instrument reading 13x.xx miles remaining.

From what I understand, after break-in period, fuel efficiency should go up a little if properly broken in. What's everyone else getting before/after break in?

I'm located in Los Angeles and I noticed during hotter months, I tend to get a little bit more out of the car.
Reply
Old Aug 30, 2015 | 07:52 PM
  #2  
StanNH's Avatar
MBWorld Fanatic!
 
Joined: Sep 2014
Posts: 1,822
Likes: 33
From: Whitefield, NH
2015 C300 Sport: Palladium, Premium, Multimedia, Leather, BLIS
This is very dependent on the local driving conditions and the driver. I have a C300 and most of the roads here are not level for any distance. Still, on highway runs I have broken 35 mpg, and average about 26-29 mpg on local roads. I did not see any dramatic change in the numbers after break-in.

As an aside, I have not seen any significant variation between the car's computer fuel economy readings and my own manual calculations, which is really unusual.
Reply
Old Aug 31, 2015 | 06:52 AM
  #3  
MASSC450's Avatar
MBWorld Fanatic!
10 Year Member
Photogenic
Liked
Loved
 
Joined: Mar 2015
Posts: 1,581
Likes: 114
From: Mass
2026 GLE 53 Coupe
After a couple thousand miles, I'm averaging a little over 27 mpg in my 2015 C300 Sport 4Matic.

That's with a mixture of 60% back roads, and 40% highway...mostly consisting of bumper to bumper traffic.
Reply
Old Aug 31, 2015 | 07:12 AM
  #4  
zsh's Avatar
zsh
Junior Member
 
Joined: Aug 2014
Posts: 50
Likes: 0
From: Sweden
2015 C 220 CDI
4,9-5.2 liters per 100km. 48.00297619 mpg, m/g (miles per US gallon) if the converter isn't lying

Still under break in period
Reply
Old Aug 31, 2015 | 08:35 AM
  #5  
Yeti575's Avatar
Junior Member
 
Joined: May 2015
Posts: 66
Likes: 1
From: Northern Europe
BMW 325 Touring; S-205 C180
Tiny engine, pretty terrible MPG:

39,8MPG converted from 7,1/l pr 100km
Reply
Old Aug 31, 2015 | 05:54 PM
  #6  
LateC300's Avatar
Senior Member
 
Joined: Jun 2015
Posts: 337
Likes: 7
From: North San Diego, CA
2015 C300
im mainly stop-and-stop traffic around the bay area. i get about 23mpg average. low 30's on the highway
Reply
Old Aug 31, 2015 | 07:26 PM
  #7  
darwin329's Avatar
Super Member
 
Joined: Jun 2015
Posts: 927
Likes: 33
From: San jose CA.
w205 c400 c63s
Tried with my c400 on eco mode running @ 51 mph average i got 30.1 mpg on a 43 miles run. I was thinking this car can go 32 or more mpg.. if i go another 50 miles

Last edited by darwin329; Aug 31, 2015 at 08:03 PM.
Reply
Old Aug 31, 2015 | 07:33 PM
  #8  
darwin329's Avatar
Super Member
 
Joined: Jun 2015
Posts: 927
Likes: 33
From: San jose CA.
w205 c400 c63s
Tried with my c400 on eco mode running @ 51 mph average i got 30.1 mpg on a 43 miles run. I was thinking this car can go 32 or more mpg.. if i go another 50 miles
Reply
MB World Stories

The Best of Mercedes & AMG

story-0

8 Oddball Mercedes Ideas That Actually Made it to Production

 Verdad Gallardo
story-1

Dubai Tuner Gives the Mercedes G-Class An Entirely New Look

 Verdad Gallardo
story-2

Six Gift Ideas Your AMG Loving Dad or Grad Will Cherish

 
story-3

7 Craziest Things AMG Gas Ever Built

 Verdad Gallardo
story-4

New Electric Mercedes-AMG GT 4-Door Coupe Unveiled: 10 Things You Need to Know

 Verdad Gallardo
story-5

6 Mercedes Models That Did NOT Age Well (But Are Somehow Still Cool)

 Verdad Gallardo
story-6

Manual Mercedes? 6 Times Sindelfingen Let Drivers Have All The Fun

 Verdad Gallardo
story-7

Mercedes SLR McLaren 722 S Is Extremely Rare Example Modified by McLaren

 Verdad Gallardo
story-8

8 Classic Boxy Mercedes Designs That Have Aged Like Fine Wine

 Verdad Gallardo
story-9

Flawlessly Restored Mercedes 190E Evo II Heads to Auction

 Verdad Gallardo
Old Sep 1, 2015 | 01:36 PM
  #9  
omg516's Avatar
Junior Member
 
Joined: Apr 2015
Posts: 69
Likes: 1
From: Bay Area, CA
C43
My C300 RWD is the most fuel efficient car I've ever owned. On road trips I get between 33-35mpg with 4 passengers and a full trunk. In suburban traffic it's closer to 25-26mpg. Pleasantly surprised at the efficiency for a car this size.
Reply
Old Sep 1, 2015 | 01:55 PM
  #10  
Flexotron's Avatar
Newbie
 
Joined: Jun 2015
Posts: 4
Likes: 0
2015 C300
My first long drive with, i was really happy to see this ;0)

Reply
Old Sep 2, 2015 | 04:59 PM
  #11  
jakc's Avatar
Member
 
Joined: Aug 2012
Posts: 217
Likes: 2
From: New Jersey
2016 C300
1. There's a break-in period?

2. I can barely get over 22MPGs even in comfort...
Reply
Old Sep 2, 2015 | 05:04 PM
  #12  
ManiacGT's Avatar
MBWorld Fanatic!
 
Joined: Jan 2015
Posts: 2,075
Likes: 59
From: Manchester, UK
BMW e89 Z4 sDrive 35i & MB S205 C200 AMG Premium Plus
Originally Posted by omg516
My C300 RWD is the most fuel efficient car I've ever owned. On road trips I get between 33-35mpg with 4 passengers and a full trunk. In suburban traffic it's closer to 25-26mpg. Pleasantly surprised at the efficiency for a car this size.
My s205 c200 petrol gets barely better mileage than my six year old 3.0 twin turbo 300hp BMW. Not impressed by the fuel efficiency on the MB at all. Even on a motorway run I struggle to get more than 38mpg UK. Nowhere near the 56 quoted no matter how hard I try.
Reply
Old Sep 2, 2015 | 05:11 PM
  #13  
c4004matic's Avatar
MBWorld Fanatic!
10 Year Member
Liked
Loved
Community Favorite
 
Joined: Oct 2014
Posts: 4,524
Likes: 1,181
From: WI
17 E43; 21 GLS580
Averaging 24 mpg over 700 miles of mixed city and highway that includes a lot of high speed highway and "testing" the tune on my 400.
Reply
Old Sep 2, 2015 | 05:18 PM
  #14  
omg516's Avatar
Junior Member
 
Joined: Apr 2015
Posts: 69
Likes: 1
From: Bay Area, CA
C43
Originally Posted by ManiacGT
My s205 c200 petrol gets barely better mileage than my six year old 3.0 twin turbo 300hp BMW. Not impressed by the fuel efficiency on the MB at all. Even on a motorway run I struggle to get more than 38mpg UK. Nowhere near the 56 quoted no matter how hard I try.
Interesting, I guess that is why the term "Your mileage may vary" exists. I had a 2007 e90 335i and the fuel efficiency couldn't touch my C300. Not familiar with how accurate mpg estimates are in the UK, but if you are getting 18mpg less than advertised you might want to get your car checked out.
Reply
Old Sep 2, 2015 | 06:30 PM
  #15  
c4004matic's Avatar
MBWorld Fanatic!
10 Year Member
Liked
Loved
Community Favorite
 
Joined: Oct 2014
Posts: 4,524
Likes: 1,181
From: WI
17 E43; 21 GLS580
Cool

Originally Posted by ManiacGT
My s205 c200 petrol gets barely better mileage than my six year old 3.0 twin turbo 300hp BMW. Not impressed by the fuel efficiency on the MB at all. Even on a motorway run I struggle to get more than 38mpg UK. Nowhere near the 56 quoted no matter how hard I try.
Either the calculations are off or your car is definitely broken. The C300 should be significantly more thrifty than a 335, unless you only drive on sport and sport plus. Even my c400 is thriftier than a 330 if I drive on ECO.
Reply
Old Sep 3, 2015 | 01:42 AM
  #16  
nbkvig2's Avatar
Thread Starter
Junior Member
 
Joined: Jun 2015
Posts: 39
Likes: 2
From: Southern California
2015 C300
My first tank of gas I got about 25mpg mixed driving. With Mercedes I noticed that on the highway it is extremely fuel efficient but in the city it is extremely poor. I'm hoping I can get some consistency, on my second tank of gas and I'm already noticing poor fuel efficiency if I don't run on the highway and I've been driving in comfort mode the entire time. I'd really like to consistently hit 400 miles before the fill up light comes on, that would be my ideal goal.
Reply
Old Sep 3, 2015 | 11:55 AM
  #17  
ManiacGT's Avatar
MBWorld Fanatic!
 
Joined: Jan 2015
Posts: 2,075
Likes: 59
From: Manchester, UK
BMW e89 Z4 sDrive 35i & MB S205 C200 AMG Premium Plus
Originally Posted by c4004matic
Either the calculations are off or your car is definitely broken. The C300 should be significantly more thrifty than a 335, unless you only drive on sport and sport plus. Even my c400 is thriftier than a 330 if I drive on ECO.
The car has been checked by the dealer. I get circa 5mpg more on the loaner entry level SE (which I expected it would be a touch better, its lighter, smaller with lighter wheels too). The loaner SE also feels faster.

I'm told by the dealer to get some more miles on it, its just over 3K now and they say due to the short journeys I do and low miles it won't get great mileage for some time yet.

I'm hopeful as the MPG is far less than anticipated so far.
Reply
Old Sep 3, 2015 | 12:35 PM
  #18  
Steve9's Avatar
Junior Member
 
Joined: Sep 2015
Posts: 56
Likes: 0
From: Antrim, Northern Ireland
C300 diesel hybrid
C300 diesel hybrid in the UK, achieving close to 50 MPG in stop / start city and country roads (non motorway). Note that's imperials gallons so would be equivalent ~41 MPG (US)

Reply
Old Sep 3, 2015 | 04:22 PM
  #19  
ManiacGT's Avatar
MBWorld Fanatic!
 
Joined: Jan 2015
Posts: 2,075
Likes: 59
From: Manchester, UK
BMW e89 Z4 sDrive 35i & MB S205 C200 AMG Premium Plus
I think given the C300d hybrid is £10,000 more than the C200 petrol, I'd hope for amazing mpg values too!
Reply
Old Sep 3, 2015 | 04:35 PM
  #20  
parkwood's Avatar
Senior Member
10 Year Member
Liked
Loved
Community Favorite
 
Joined: Jan 2015
Posts: 446
Likes: 56
EQE 500 4MATIC replacing EQC 4matic AMG line P
250 diesel 4matic estate average over 5800k 6.3l per 100km according to the computer, 44mpg in uk. I have seen as low as 5.6l per 100km on longer journeys 50 mpg uk and once 5.3l per 100km. Lots of short journeys of about 8k total and lots of 25k at 90k max.

Published figs 5 to 5.2 mixed. Overall i am pleased.
Reply
Old Sep 3, 2015 | 06:04 PM
  #21  
vladarh's Avatar
Member
 
Joined: Mar 2015
Posts: 129
Likes: 15
From: Stavanger, Norway
E350e W213
C200 petrol, 8l/100km in the city and 6-7 on open roads.
Reply
Old Sep 4, 2015 | 11:12 AM
  #22  
Shakespeare's Avatar
Junior Member
 
Joined: Jun 2015
Posts: 15
Likes: 0
From: UK
C300h Sport Prem Plus
On C300 Diesel Hybrid - over 5,000 miles I have been averaging over 65 MPG on mixed journeys - although nearer 55 MPG when more laden. On a recent 150 mile journey (motorway with traffic) I achieved just over 80MPG average - but was trying hard to get that.

Overall really pleased with the fuel economy - better than Lexus IS200 hybrid that I had previously, as well being a much better car overall.

Mine's a company car - the lower CO2 of the hybrid means it has a lower tax charge to me than the cheaper C200, so I do not see the higher purchase price.
Reply
Old Sep 6, 2015 | 04:38 AM
  #23  
simon.willis27's Avatar
Junior Member
 
Joined: Mar 2015
Posts: 41
Likes: 0
W205 UK C300 hybrid
80mpg!! !!

Originally Posted by Shakespeare
On C300 Diesel Hybrid - over 5,000 miles I have been averaging over 65 MPG on mixed journeys - although nearer 55 MPG when more laden. On a recent 150 mile journey (motorway with traffic) I achieved just over 80MPG average - but was trying hard to get that.

Overall really pleased with the fuel economy - better than Lexus IS200 hybrid that I had previously, as well being a much better car overall.

Mine's a company car - the lower CO2 of the hybrid means it has a lower tax charge to me than the cheaper C200, so I do not see the higher purchase price.
Have you got a dashboard photo to back this claim up????? I feel a competition coming on .....

Mine is brand new, so needs running in ....on first long trip I got 52mpg driving normally.
Reply
Old Sep 6, 2015 | 05:06 AM
  #24  
hummerhealey's Avatar
Member
 
Joined: Mar 2015
Posts: 107
Likes: 0
From: Netherlands
C220d Avantgarde
Originally Posted by ManiacGT
I think given the C300d hybrid is £10,000 more than the C200 petrol, I'd hope for amazing mpg values too!
The C63 is even more expensive
Reply
Old Sep 6, 2015 | 05:40 AM
  #25  
ManiacGT's Avatar
MBWorld Fanatic!
 
Joined: Jan 2015
Posts: 2,075
Likes: 59
From: Manchester, UK
BMW e89 Z4 sDrive 35i & MB S205 C200 AMG Premium Plus
Originally Posted by vladarh
C200 petrol, 8l/100km in the city and 6-7 on open roads.
hey,

Could I get your odo mileage, model type (SE, sport, AMG line), driving style, typical journey type and length for comparison?
Reply


You have already rated this thread Rating: Thread Rating: 1 votes, 4.00 average.


All times are GMT -4. The time now is 02:24 PM.

story-0
8 Oddball Mercedes Ideas That Actually Made it to Production

Slideshow: Mercedes has never been afraid to experiment, and some of its strangest ideas turned out to be surprisingly successful.

By Verdad Gallardo | 2026-06-10 17:43:40


VIEW MORE
story-1
Dubai Tuner Gives the Mercedes G-Class An Entirely New Look

Sideshow: A Middle Eastern tuner has transformed the Mercedes-AMG G 63 into an open-top special, replacing nearly every exterior panel in the process.

By Verdad Gallardo | 2026-06-10 15:29:50


VIEW MORE
story-2
Six Gift Ideas Your AMG Loving Dad or Grad Will Cherish

Slideshow: Six gift ideas your AMG loving dad or grad will cherish.

By | 2026-06-03 17:26:18


VIEW MORE
story-3
7 Craziest Things AMG Gas Ever Built

Slideshow: Sometimes AMG builds fast sedans. Other times, it builds twin-turbo V12 land missiles and six-wheeled off-road monsters.

By Verdad Gallardo | 2026-05-26 17:59:58


VIEW MORE
story-4
New Electric Mercedes-AMG GT 4-Door Coupe Unveiled: 10 Things You Need to Know

Slideshow: Mercedes-AMG's new electric GT 4-Door Coupe trades combustion for software, synthetic noise, and more than 1,100 horsepower.

By Verdad Gallardo | 2026-05-20 20:08:15


VIEW MORE
story-5
6 Mercedes Models That Did NOT Age Well (But Are Somehow Still Cool)

Slideshow: Not every Mercedes design becomes timeless, some feel stuck in the era they came from.

By Verdad Gallardo | 2026-05-12 18:09:07


VIEW MORE
story-6
Manual Mercedes? 6 Times Sindelfingen Let Drivers Have All The Fun

Slideshow: Yes, Mercedes built manual cars, and some of them are far more interesting than you'd expect.

By Verdad Gallardo | 2026-05-02 12:36:58


VIEW MORE
story-7
Mercedes SLR McLaren 722 S Is Extremely Rare Example Modified by McLaren

Slideshow: A one-of-one U.S.-spec Mercedes-Benz SLR McLaren Roadster became even rarer after a factory-backed transformation at McLaren's headquarters.

By Verdad Gallardo | 2026-04-29 11:19:28


VIEW MORE
story-8
8 Classic Boxy Mercedes Designs That Have Aged Like Fine Wine

Slideshow: Before curves took over, Mercedes mastered the art of the straight line, and some of those shapes still look right today.

By Verdad Gallardo | 2026-04-25 12:05:49


VIEW MORE
story-9
Flawlessly Restored Mercedes 190E Evo II Heads to Auction

Slideshow: The 190E Evolution II shows how a homologation necessity became a six-figure collector icon.

By Verdad Gallardo | 2026-04-22 17:53:47


VIEW MORE