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Not getting expected fuel economy 2016 s550 4matic sedan

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Not getting expected fuel economy 2016 s550 4matic sedan

 
Old 12-25-2016, 06:07 PM
  #26  
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At 8K miles in my S600, it has averaged 20.8 MPG from both city driving (3K) and HW driving (5K).

But I would be very surprised if anyone else could get that kind of mileage out of an S600.
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Old 12-25-2016, 08:33 PM
  #27  
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Originally Posted by Mitch Alsup View Post
At 8K miles in my S600, it has averaged 20.8 MPG from both city driving (3K) and HW driving (5K).

But I would be very surprised if anyone else could get that kind of mileage out of an S600.
Your mpg numbers are so flabbergastingly high in your umpteen S600 mileage post... Next time you start your car in your garage, reset trip computer and leave it alone for the next 1000 miles, then get back to us.
Don't set the trip as you are coasting down Pike's Peak and then claim a 20 mpg number showing, that's meaningless...
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Old 12-25-2016, 11:30 PM
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Originally Posted by 714Merc View Post
Your mpg numbers are so flabbergastingly high in your umpteen S600 mileage post... Next time you start your car in your garage, reset trip computer and leave it alone for the next 1000 miles, then get back to us.
Don't set the trip as you are coasting down Pike's Peak and then claim a 20 mpg number showing, that's meaningless...
Driving from Austin Tx to Fredericksburg Tx I typically get 22.x MPG (where the x really does not matter much)

Driving the 7 miles in Austin daily traffic (to/from work) I typically get 17 MPG.

As anyone with access to a topological survey map can attest, its pretty flat from Austin to Fredericksburg (and back: although not without hills.) For those of interest: the 7 mile trip from central Austin to work goes out over Lake Austin Blvd, over the low water crossing at Red Bud Trail, north on Westlake drive, cut over on Toro Canyon rd, to Westlake drive, and across 360. This road has plenty of up and down and plenty of traffic. If anyone is in the Austin Area wants to see how I do this drive, I am willing.
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Old 12-27-2016, 01:57 PM
  #29  
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Originally Posted by RJC View Post
In my case it's not about the $ but having to visit the filling station so often. Yes the power of M278 is awesome with actual stock dyno #'s of 474hp and 566trq. I think the new 4.0 will match the hp but will get no where's near this monster trq in non-amg form.
The new 4L will have the same torque rating, with more HP.

M
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Old 12-27-2016, 05:47 PM
  #30  
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Originally Posted by Germancar1 View Post
The new 4L will have the same torque rating, with more HP.

M
I read that too, but the 4.0 AMG version in the GTS is only putting out 478, so I'm not sure the non-amg version will be at 516.
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Old 12-30-2016, 02:07 PM
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[QUOTE=RJC;7005235]Not normal as most can't even tell if their engines are running at idle.

So this past few days I've had a chance to try a few things, including a 300+ mile round trip with only 2 people in the car.

I have averaged an indicated 24.x mpg (up and back to our cabin at 4000 ft on some twisty mountain roads on CA HWY 4), which is the best so far, although we'll see what the final number is when I fill up at the pump later this week (probably 10% less). This means I'll have gotten close to 450 miles from the tank. Not too bad. (S550 v4). I really have to wonder where the 26mpg EPA numbers come from though. I was driving at 70 +/- mph with no assistance from distronic. I had the ECO game bars all maxed out, I think it said I was at 99% for ECO.

I think that 2 factors have mad a difference:
1) I inflated the tires to 38F/39R (this is the max recommendation per the values inside the fuel filler door)
2) I only had 2 adults in the car, although I had a trunk packed with stuff on the return trip, having filled a shopping cart at Costco and driving all that stuff home.


One other thing I had a chance to focus on. The buzz at idle. It came and went at various stops as I described earlier in the post. This time, when it came, I dropped the car into neutral and immediately the buzz went away. Putting the car back into Drive, it usually came back, although it seems like it was less 'buzzy' when I did. I think it's load related to the transmission and I'm now wondering if it's simply a byproduct of the 4Matic setup. At idle, in Neutral, the engine was completely smooth, you couldn't tell it was on except by looking at the tachometer needle.

Anyway, I really love this car! Best car I've ever owned and an absolute pleasure to drive.
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Old 12-31-2016, 07:26 AM
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Just to chime in...

I have a 2014 S550 and I average 19.8 MPG. I really don't monitor city vs highway, but just overall.

I alway keep it in sport mode and sport suspension.
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Old 12-31-2016, 04:18 PM
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Originally Posted by dpm7471 View Post
Just to chime in...

I have a 2014 S550 and I average 19.8 MPG. I really don't monitor city vs highway, but just overall.

I alway keep it in sport mode and sport suspension.
That's impressive; you are probably never running the engine to keep the ac on in that summer NC heat, waiting for the wife to come out of the shopping mall...

Edit: I have never reset trip computer since buying my 2014 S550, 17.3mpg over 32,500 miles...
But being from Southern California, I tend to get caught in something known as a traffic jam...

Last edited by 714Merc; 12-31-2016 at 04:27 PM.
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Old 07-12-2019, 03:07 PM
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ok

Last edited by jagwaar; 07-12-2019 at 07:24 PM.
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Old 07-12-2019, 04:11 PM
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Easy there turbo, you realize you are responding to a 3 year old thread.
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Old 07-12-2019, 04:49 PM
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Originally Posted by jagwaar View Post
Thank yo so much for saying exactly what I was thinking. Anyone that drives an S Class Mercedes (W222) and is concerned about mpg is a confused individual that doesn't need to own one in the first place and obviously is an alum of Duh! University.. Also, the 4matic will get less mpg than the base rwd S Class and a 5th grader will tell you that as well, and he/she isn't old enough to drive or doesn't even drive or own one. If the aforesaid mentioned offends you, well, I'm talking about you.
Well, thatís a nice way to win friends here, Mr. Jagwaar! Here in W222, we try to show a little respect for other members. We certainly donít agree with each other all the time, but we try to keep things civil. Take a chill pill, friendo.
Everyone is different. Some of the wealthiest people on the planet pinch pennies. You or I may not be that way, but what business is that of yours? Sheesh!
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Old 07-12-2019, 05:18 PM
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Originally Posted by jagwaar View Post
Thank yo so much for saying exactly what I was thinking. Anyone that drives an S Class Mercedes (W222) and is concerned about mpg is a confused individual that doesn't need to own one in the first place and obviously is an alum of Duh! University.. Also, the 4matic will get less mpg than the base rwd S Class and a 5th grader will tell you that as well, and he/she isn't old enough to drive or doesn't even drive or own one. If the aforesaid mentioned offends you, well, I'm talking about you.
Do we have a Troll here!
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Old 07-12-2019, 05:45 PM
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Originally Posted by Streamliner View Post
I don't mean to belittle anyone's concerns here, but if you are driving a W222, is fuel economy really an issue? Average lease payments on our luxo sleds is what? Like $1,600 to $1,800.00 a month? For probably under $300.00 a month, we could be leasing a beautiful Honda Accord, which would deliver truly exceptional economy, but we have chosen not to. Personally, I have never checked my MPG, as it just seems to be within reasonable parameters for a big, very luxurious sedan that will blow the doors off of 95% of the vehicles on the road. I'm content to leave it at that.
Merry Christmas to all,
Streamliner
My S has better or similar economy to a Honda Accord, the new Vogue on the other hand is something I don't want to talk about
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Old 07-12-2019, 07:47 PM
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Originally Posted by 714Merc View Post
Your mpg numbers are so flabbergastingly high in your umpteen S600 mileage post... Next time you start your car in your garage, reset trip computer and leave it alone for the next 1000 miles, then get back to us.
Don't set the trip as you are coasting down Pike's Peak and then claim a 20 mpg number showing, that's meaningless...
I will let the pictures stand for themselves:


Almost 3 hours of driving with CC set at 70 MPH, averaging 65 MPH after leaving Flagstaff from the center of old Flagstaff.

I submit anyone (ANYONE) with driving discipline can get these kinds of numbers.
If you can't it is not the car holding your numbers back.
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Old 07-13-2019, 02:55 PM
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The gas tank on S-Class is not that big, and what I don't care for are the frequent trips to the gas station.
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Old 07-13-2019, 04:16 PM
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In the w222 the 4matic and 2 wheel drive get exactly the same gas mileage. I'll trust the engineers at MB over you or even the more intelligent 5th grader.


Originally Posted by
Originally Posted by [b
jagwaar[/b]
Thank yo so much for saying exactly what I was thinking. Anyone that drives an S Class Mercedes (W222) and is concerned about mpg is a confused individual that doesn't need to own one in the first place and obviously is an alum of Duh! University.. Also, the 4matic will get less mpg than the base rwd S Class and a 5th grader will tell you that as well, and he/she isn't old enough to drive or doesn't even drive or own one. If the aforesaid mentioned offends you, well, I'm talking about you.
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Old 07-13-2019, 04:18 PM
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The 4Matic has 1 MPG lower mileage. Check the EPA certification numbers.
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Old 07-13-2019, 04:20 PM
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I"ll surely check but I'm positive that I heard an engineer specifically say they got the same mileage because they used some weight saving techniques in the 4matic.

Originally Posted by elmalo View Post
The 4Matic has 1 MPG lower mileage. Check the EPA certification numbers.
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Old 07-13-2019, 04:25 PM
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The 4matic has more moving parts and more internal friction.
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Old 07-13-2019, 04:29 PM
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I doubt it's friction. The Highway MPG is the same for both. It's only the city mileage that's off 1mpg according to the EPA. I'm still looking for the engineering video I saw.

Originally Posted by elmalo View Post
The 4matic has more moving parts and more internal friction.
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Old 07-13-2019, 04:30 PM
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EPA shows for 2019 S 450:

19/28 for 2 WD
18/28 for 4Matic
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Old 07-13-2019, 04:47 PM
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Curb weight for the 2019 S450/2WD is 4553 lbs

Curb weight for the 2019 S450/4Matic is 4685 lbs

The heavier 4Matic burns more gas in stop/go traffic.
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Old 07-13-2019, 05:09 PM
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For the S560 for awhile I saw the RWD and AWD both got 17/27, but then the other day I saw somewhere the RWD gets 18/27.
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