MPG better than expected
Senior Member
Joined: Jan 2013
Posts: 381
Likes: 18
From: Colorado
2014 Mercedes E63S AMG
MBWorld Fanatic!
Joined: Apr 2013
Posts: 1,506
Likes: 66
From: Sidney, BC
2009 SLK55 AMG. & 2022 GLA250 4Matic
I don't see this as anything special if you are cruising at more or less constant speeds on the highway. It is urban driving that suck the tank dry.
I like to watch the mised driving numbers.
My E350 4 matic 2011 wagon would give me 8.8-9.0 L/100km on the highway but mixed was 10.6L/100km.
My CLA45 AMG would get down in the 7.8-8.0 L/100 km but the mixed was around 9.4-9.6L/100 km.
This beast with the performance package will give me 10.5-10.8 on the highway but the mixed is in the 12.5-12.8 range. Curiously all these cars show a mix average speed as a daily driver of arond 56-60 kph.
I always think of gas as the cheapest thing I put out on cars. I like the notion of smiles per mile too.
I like to watch the mised driving numbers.
My E350 4 matic 2011 wagon would give me 8.8-9.0 L/100km on the highway but mixed was 10.6L/100km.
My CLA45 AMG would get down in the 7.8-8.0 L/100 km but the mixed was around 9.4-9.6L/100 km.
This beast with the performance package will give me 10.5-10.8 on the highway but the mixed is in the 12.5-12.8 range. Curiously all these cars show a mix average speed as a daily driver of arond 56-60 kph.
I always think of gas as the cheapest thing I put out on cars. I like the notion of smiles per mile too.
Super Member
Joined: May 2017
Posts: 900
Likes: 113
From: Toronto
2012 C63, 2014 E550
You guys are all insane. Im over 20L/100km with mostly city driving. Average speed is probably 15-20kmh which really hurts.
And absolutely agree with the smiles per kilometer metric. Smile width = 1/fuel efficiency.
And absolutely agree with the smiles per kilometer metric. Smile width = 1/fuel efficiency.
MBWorld Fanatic!
Joined: Apr 2013
Posts: 1,506
Likes: 66
From: Sidney, BC
2009 SLK55 AMG. & 2022 GLA250 4Matic
At worst under those conditions I never see over 16.
Senior Member
Joined: Aug 2007
Posts: 271
Likes: 9
From: Richmond, VA
2013 C63 W204, 2016 E63S W212 Matte Gray
I cannot comment upon the canadian measurements; all the Litters and Kilo presentations have my math brain sputtering. I can say, however, that I too have been pleasantly surprised by the highway mileage (I've had my '13 C63 about 3 weeks). About 22mpg average highway mileage, at 75 mph average, including over mountain range (Blue Ridge, Charlottesville, VA). This equals or exceeds my former W211 E55 supercharged. Not bad for such a large motor. Very pleased. City stop and go is brutal, but the cruising mileage is solid.
Trending Topics
MBWorld Fanatic!
Joined: Apr 2013
Posts: 1,506
Likes: 66
From: Sidney, BC
2009 SLK55 AMG. & 2022 GLA250 4Matic
It is simple 10L/100 km = 23.8 mpg US or in your case 22 mpg is about 10.9L/100 km which is about what I see on a straight highway run. Best ever in the 10 months I have had this car was 10.6 at about 60 mph.
Last edited by Alex.currie44; Jul 22, 2017 at 09:44 AM.
MB World Stories
The Best of Mercedes & AMG
Manual Mercedes? 6 Times Sindelfingen Let Drivers Have All The Fun
Verdad Gallardo
Mercedes SLR McLaren 722 S Is Extremely Rare Example Modified by McLaren
Verdad Gallardo
8 Classic Boxy Mercedes Designs That Have Aged Like Fine Wine
Verdad Gallardo
Flawlessly Restored Mercedes 190E Evo II Heads to Auction
Verdad Gallardo
Electric Mercedes C-Class Unveiled: 11 Things You Need to Know
Verdad Gallardo
Mercedes EQS Gets A Major Update: Everything You Need to Know
Verdad Gallardo
5 Underrated Mercedes-Benz Models That Don't Get the Love They Deserve
Verdad Gallardo
Mercedes 300D Has Pushed Well Past 1 Million Miles and It Ain't Stopping
Verdad Gallardo
10 Most Reliable Mercedes-Benz Models You Can Buy Used
Verdad Gallardo
MBWorld Fanatic!
Joined: Aug 2011
Posts: 2,818
Likes: 395
2012 E550 Cabrio
I have unlocked my inner 16 year old lol.
Every time I get a chance to drive on the highway I am VERY pleased by the mileage, so even some sort of mix would go a long ways.
I hate those damn idle shutoff things in the new cars, but cant help but wonder how much gas/time I waste at stop lights. The time factor is certainly high.
MBWorld Fanatic!
Joined: Apr 2013
Posts: 1,506
Likes: 66
From: Sidney, BC
2009 SLK55 AMG. & 2022 GLA250 4Matic
Im the same here Alex, minus the super sooty pipes. I'm right in town so its all stop light to stop light, and that tends to be how I drive it.
I have unlocked my inner 16 year old lol.
Every time I get a chance to drive on the highway I am VERY pleased by the mileage, so even some sort of mix would go a long ways.
I hate those damn idle shutoff things in the new cars, but cant help but wonder how much gas/time I waste at stop lights. The time factor is certainly high.
I have unlocked my inner 16 year old lol.
Every time I get a chance to drive on the highway I am VERY pleased by the mileage, so even some sort of mix would go a long ways.
I hate those damn idle shutoff things in the new cars, but cant help but wonder how much gas/time I waste at stop lights. The time factor is certainly high.
I worried about the starter but after taling with my guys I relaxed.
In the SLK V6 the starter motor came on. occasionally. I am told in the V8s it is rare that it restarts the engine.
This is because the system knows the optimum cylinder in terms of piston position to kick the engine to start it. All it does is deliver spark and fuel and the movement of that cylinder rolls the motor and away you go.
The 4 of the CLA45 used the starter what seemed to be 25-30% of the time.
I cannot recall the specific data but I did test both cars over a period of a few weeks were I shut off the ECO start and I did notice fuel economy was not as good without it in my mixed driving when compared to what it was when it was on.
Senior Member
Joined: Jan 2013
Posts: 381
Likes: 18
From: Colorado
2014 Mercedes E63S AMG
Two cars - SLK350 and ClA45 AMG - had the eco feature of engine shut off.
I worried about the starter but after taling with my guys I relaxed.
In the SLK V6 the starter motor came on. occasionally. I am told in the V8s it is rare that it restarts the engine.
This is because the system knows the optimum cylinder in terms of piston position to kick the engine to start it. All it does is deliver spark and fuel and the movement of that cylinder rolls the motor and away you go.
The 4 of the CLA45 used the starter what seemed to be 25-30% of the time.
I cannot recall the specific data but I did test both cars over a period of a few weeks were I shut off the ECO start and I did notice fuel economy was not as good without it in my mixed driving when compared to what it was when it was on.
I worried about the starter but after taling with my guys I relaxed.
In the SLK V6 the starter motor came on. occasionally. I am told in the V8s it is rare that it restarts the engine.
This is because the system knows the optimum cylinder in terms of piston position to kick the engine to start it. All it does is deliver spark and fuel and the movement of that cylinder rolls the motor and away you go.
The 4 of the CLA45 used the starter what seemed to be 25-30% of the time.
I cannot recall the specific data but I did test both cars over a period of a few weeks were I shut off the ECO start and I did notice fuel economy was not as good without it in my mixed driving when compared to what it was when it was on.
MBWorld Fanatic!
Joined: Feb 2007
Posts: 1,308
Likes: 80
From: Houston - Clear Lake
C63 coupe, Z3M Roadster garage queen
You may want to track actual fuel usage and distances between fillups before celebrating TOO much. Most users have reported that the car's mpg calculator is optimistic, typically by about 10%.
My car has proven capable of some surprisingly good mpg numbers when driven very carefully. However, that isn't much fun. I've noted an inverse relationship between the level of grins and giggles while driving vs the level of groaning at the next fillup. I like the smiles per gallon concept a lot!
My car has proven capable of some surprisingly good mpg numbers when driven very carefully. However, that isn't much fun. I've noted an inverse relationship between the level of grins and giggles while driving vs the level of groaning at the next fillup. I like the smiles per gallon concept a lot!
Member
Joined: May 2017
Posts: 148
Likes: 6
From: ATL
2010 R350, 2012 CLS63 P30 (sold), 2009 C63 (totaled), 2002 ML320 (Sold)
