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Old Apr 11, 2021 | 08:05 PM
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Mercedes S560 and EQS 580 SUV
2019 S50 MPG about 14 to 15 mpg

Hello all,

Just wondering how much MPG does everyone get on latest S560. I have been averaging about 14.5 to 15 MPG on mixed driving condition in my last 5k miles and as my Dad typically drives to work; he is always easy on throttle. Car only has about 5k Miles; because of Covid; have been working from work and not much driving either.

Thanks in advance.

Last edited by Manu Miami; Oct 9, 2022 at 07:22 PM.
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Old Apr 11, 2021 | 08:20 PM
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Originally Posted by Manu Miami
Hello all,

Just wondering how much MPG does everyone get on latest S560. I have been averaging about 14.5 to 15 MPG on mixed driving condition in my last 5k miles and as my Dad typically drives to work; he is always easy on throttle. Car only has about 5k Miles; because of Covid; have been working from work and not much driving either.

The car has undergone some work related to engine; where Dealer never disclosed some fire had burned some cable before selling as new lease model and it was later fixed at their expense. It was only found when we opened the hood and found fire extinguisher dust powder all over engine bay and had to investigate further.

So just thought to check if there could be something wrong with my Engine efficiency in general or people do get such mileage on S560 of about 14 to 15 mpg.

Thanks in advance.
My S550 is only averaging around 14 mpg in mostly local driving and me being easy on the pedal. I have a feeling that it will keep improving though as the weather warms up.
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Old Apr 11, 2021 | 08:58 PM
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All Cars Lost To Hurricane Isaac (W124 E420 revived - added 88 Allante 14 S550, 17 S63
Originally Posted by Manu Miami
Hello all,

Just wondering how much MPG does everyone get on latest S560. I have been averaging about 14.5 to 15 MPG on mixed driving condition in my last 5k miles and as my Dad typically drives to work; he is always easy on throttle. Car only has about 5k Miles; because of Covid; have been working from work and not much driving either.

The car has undergone some work related to engine; where Dealer never disclosed some fire had burned some cable before selling as new lease model and it was later fixed at their expense. It was only found when we opened the hood and found fire extinguisher dust powder all over engine bay and had to investigate further.

So just thought to check if there could be something wrong with my Engine efficiency in general or people do get such mileage on S560 of about 14 to 15 mpg.

Thanks in advance.
Not sure of where you are geographically located, but the following is true if you noticed the mileage during wintery temperatures

Winter gas blends in colder areas is less fuel efficient

In cold climates short trips can be hugely inefficient because a greater portion of the trip is during engine warm up. Even worse for bigger blocks

cold air is more dense and creates drag which works against aerodynamics

Heating electrics draw more power which uses more gas

Combustion of cold dense air is less fuel efficient

Reduced cold tire air pressure increases rolling resistance

Finally... your mileage sounds about right for short trips with stop and go for cold months.... it will likely increase in coming months.. and my two S's get about the mileage you observed in stop and go with moderate highway.. maybe 16-17.... the mileage really jumps in heavy highway driving

NOTE: As an ex-wisconsinite... we know a car warms faster if driven versus idling.. which also helps mileage..
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Old Apr 11, 2021 | 09:01 PM
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Ya really depends on the type of driving and climate and driving style. When I go easy on my car here in Florida along I75 I can get 28 MPG at 70 MPH. and combination around town and highway is generally around 21 mpg.
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Old Apr 12, 2021 | 08:36 AM
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I usually get around 27 mpg UK or 22,4 us MPG in average climate condition and 255 front and 285 rear summer tires 75mph , in the winter below 0 C condition I got the 245 front and rear winter tires and I get about the same 27 mpg.
Was an time when I was on old pirelli RF winter tires and I run them in the temperature like 10C on the highway at 75 mph getting 31,4 uk or 26,13 us mpg

So 18 us mpg ... I see only when I do very sort trip when the engine is not getting up to running temperature. Then if I would see steady 18us mpg on the highway then definitely I'd investigate that.

zender
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Old Apr 12, 2021 | 08:55 AM
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On a 2018 S560, I get high 20s on the highway; touching low 30s if I take it easy. In around town driving where I'm dipping into boost more than I should, I get 12/13 or so. I am averaging around 18/19 MPG given reduced highway travel lately.
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Old Apr 12, 2021 | 10:44 AM
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Originally Posted by PatentLawyer
On a 2018 S560, I get high 20s on the highway; touching low 30s if I take it easy. In around town driving where I'm dipping into boost more than I should, I get 12/13 or so. I am averaging around 18/19 MPG given reduced highway travel lately.
My experience as well. Around town, even driving very conservatively, the car is a gas guzzler. On the highway, fuel economy for the big, very powerful sedan is what I would call outstanding.
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Old Apr 12, 2021 | 11:06 AM
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All Cars Lost To Hurricane Isaac (W124 E420 revived - added 88 Allante 14 S550, 17 S63
Originally Posted by PatentLawyer
On a 2018 S560, I get high 20s on the highway; touching low 30s if I take it easy. In around town driving where I'm dipping into boost more than I should, I get 12/13 or so. I am averaging around 18/19 MPG given reduced highway travel lately.
I did an actual calc and i do get about 18/19 on the 550, and 17/18 on the 63.... I typically just look at the miles per tank... but I went back and looked thru my receipts... I was estimating less then I am actually getting
this is mostly stop and go with light highway (in Houston light highway is often stop and go)

I hope the OP reads your post as his mileage may be a bit low depending on conditions.

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Old Apr 20, 2021 | 08:58 PM
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Originally Posted by 2012 merc amg
Ya really depends on the type of driving and climate and driving style. When I go easy on my car here in Florida along I75 I can get 28 MPG at 70 MPH. and combination around town and highway is generally around 21 mpg.
Originally Posted by PatentLawyer
On a 2018 S560, I get high 20s on the highway; touching low 30s if I take it easy. In around town driving where I'm dipping into boost more than I should, I get 12/13 or so. I am averaging around 18/19 MPG given reduced highway travel lately.
Originally Posted by kafklatsch
I did an actual calc and i do get about 18/19 on the 550, and 17/18 on the 63.... I typically just look at the miles per tank... but I went back and looked thru my receipts... I was estimating less then I am actually getting
this is mostly stop and go with light highway (in Houston light highway is often stop and go)

I hope the OP reads your post as his mileage may be a bit low depending on conditions.
Thank you for all the reply. I am in Miami; it's very hot climate here in high 85F to 95F (38C) for most part of the year. I will talk to service center to run fuel consumption test and see if anythings come of it. In highway, I do get 25 to 26 but as soon as I hit the city driving ... it just drops dramatically no matter how I drive. And 14 mpg of mixed condition seemed low to me; considering it's rated 21 in mixed condition.
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Old Apr 22, 2021 | 11:28 AM
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Originally Posted by Manu Miami
, I do get 25 to 26 but as soon as I hit the city driving ... it just drops dramatically no matter how I drive. And 14 mpg of mixed condition seemed low to me; considering it's rated 21 in mixed condition.
Gas mileage in City driving is all about predicting {the light will turn red,...} and to start slowing down before you get there so you don't have to stop.

BTW, I average 20 MPG n my S-600, I have gotten as high as 30 MPH {Fron Flagstaff to Kingman--admittedly down hill, but plenty of miles (about 300))}
More typically, I get 22-23 MPH on interstates at 75-ish, and 16 MPG in town.
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Old Apr 22, 2021 | 06:13 PM
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I think there is a difference in city, vs City vs CITY

It would be interesting to see how your driving compares to what the EPA's definition of city driving is.
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Old Apr 22, 2021 | 09:04 PM
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Originally Posted by Mitch Alsup
Gas mileage in City driving is all about predicting {the light will turn red,...} and to start slowing down before you get there so you don't have to stop.

BTW, I average 20 MPG n my S-600, I have gotten as high as 30 MPH {Fron Flagstaff to Kingman--admittedly down hill, but plenty of miles (about 300))}
More typically, I get 22-23 MPH on interstates at 75-ish, and 16 MPG in town.
I have to call bullsh*t on those claims. The most I ever got on the highway in my S600 was 21 mpg at 60 mph. At sustained speeds of 75, it dropped to under 18 mpg.
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Old Apr 23, 2021 | 03:11 PM
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Originally Posted by DaveW68
I have to call bullsh*t on those claims. The most I ever got on the highway in my S600 was 21 mpg at 60 mph. At sustained speeds of 75, it dropped to under 18 mpg.
Presto::


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Old Apr 23, 2021 | 03:45 PM
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Originally Posted by Mitch Alsup
Presto::

If that's your car and if it's really an S600, then you need to get your trip computer fixed. Or perhaps you were cruising in neutral down a long mountain road?

Regardless, 30 mpg is absolutely impossible at any speed in an S600. Hell....it's almost impossible at any speed in an S550. Your S600 is only rated at 20 mph on the hwy under ideal conditions and most people know that the EPA numbers are hard to achieve.
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Old Apr 23, 2021 | 05:01 PM
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Originally Posted by DaveW68
If that's your car and if it's really an S600, then you need to get your trip computer fixed. Or perhaps you were cruising in neutral down a long mountain road?
A) yes it is indeed a S-600 that I have owned since new in 2015.
B) I did mention that I started in Flagstaff and took the picture a bit past Kingman which is decidedly downhill.
C) by the time I reached Bakersfield the mileage was down to 24 MPG.

Regardless, 30 mpg is absolutely impossible at any speed in an S600. Hell....it's almost impossible at any speed in an S550. Your S600 is only rated at 20 mph on the hwy under ideal conditions and most people know that the EPA numbers are hard to achieve.
D) I routinely get 20% more than the EPA numbers (before they downgraded them half a decade ago.)
E) Heck, I can get 22 MPG out of my Ferrari rated at 17 MPG--but I can also get it down to 6 MPG on the race tracks.
F) It is not what they are rated for, it is how you drive them. I know how, perhaps you do not.
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Old Apr 23, 2021 | 05:51 PM
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Here is a look at my GLS on the same Flagstaff to Kingman (and beyond) journey.



almost 500 miles and a tweak better than 30 MPG.

It really is how you drive them.
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Old Apr 23, 2021 | 06:36 PM
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Unfortunately I don't live in an area where I can cruise down hill for 170 miles in high heat. IL is pretty darn flat. Have you ever checked your mileage for the reverse trip at 70 mph? Maybe 16 mpg going the reverse direction?

BTW, you need a dust rag for your GLS.

Last edited by DaveW68; Apr 23, 2021 at 06:38 PM.
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Old Apr 23, 2021 | 08:09 PM
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Originally Posted by Mitch Alsup
B) I did mention that I started in Flagstaff and took the picture a bit past Kingman which is decidedly downhill.
C) by the time I reached Bakersfield the mileage was down to 24 MPG.
Mitch, I'm curious about how you got through Bakersfield when going from Kingman to Flagstaff. Were you lost? Nav system messed up? Bakersfield is definitely off the direct route.
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Old Apr 23, 2021 | 08:30 PM
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Originally Posted by as.thompson
Mitch, I'm curious about how you got through Bakersfield when going from Kingman to Flagstaff. Were you lost? Nav system messed up? Bakersfield is definitely off the direct route.
Note the order of my words "started in Flagstaff" took "picture after Kingman" stopped for the night in Bakersfield.

All in the same direction. Aft on the way from Bakersfield to Flagstaff about a week later, on the return trip, I got about 23 MPG. so the hils do make a difference, but "not ""that"" much".
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Old Apr 23, 2021 | 08:32 PM
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Originally Posted by DaveW68
Unfortunately I don't live in an area where I can cruise down hill for 170 miles in high heat. IL is pretty darn flat. Have you ever checked your mileage for the reverse trip at 70 mph? Maybe 16 mpg going the reverse direction?
Dead-flat I only can get mid 20s.

So, I have established that one CAN get that kind of mileage.
The questions you guys should be asking is how ??
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Old Apr 23, 2021 | 08:54 PM
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Originally Posted by Mitch Alsup
Dead-flat I only can get mid 20s.

So, I have established that one CAN get that kind of mileage.
The questions you guys should be asking is how ??
OK....I'll bite. How?
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Old Apr 23, 2021 | 09:48 PM
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2 of those MPG are by not consuming much water and thus not needing to stop except for lunch--two 4-hour stints with no breaks.
1 of those MPG are by not using distronic in traffic (even on interstates) as it slows down too much and unnecessarily harming MPG
3 of those MPG are taking the transmission out of gear on downhill slopes of sufficient angulation and coasting
2 of those MPG are from using 39 PSI in the tires
AND
1 of those MPG are from accelerating modestly to speed

{take the numbers above as representative of the ratios between them but not necessarily as definitively accurate.}
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Old Apr 24, 2021 | 09:56 AM
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EPA mileage for my car is 16 city 24 highway.


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Old Apr 24, 2021 | 10:11 AM
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My 16 Maybach with the v12 gets about 22-23 on the freeway. Interestingly my 18 AMG GTC gets virtually the same mpg on the freeway and that car weights about 2000 pounds less than the Maybach.
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Old Apr 24, 2021 | 04:28 PM
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My 2015 S65 gets 21mpg on the open interstate with cruise set at 82mph. It drops to about 19mpg on local expressways with heavier traffic. The MPG does not improve at lower speed settings. Two summers ago I did a 6,000 mile trip from home to Midland Michigan, then Pittsburgh, then back home. Average mpg for the entire trip was 20.4mpg, I think the average speed was around 50mph due to the 400 miles of local city street driving. The worst interstate mpg was 17.8mpg across Indiana and Illinois in the rain at a speed average of 60mph. The best was 24.2 from Flagstaff to the east side of Albuquerque, about 390 miles at an average speed of 81mph. Starting elevation was 7,000ft, the refilling gas station was at about 6,000ft so almost level over 390 miles. The next leg from east of Albuquerque to Amarillo was seriously downhill but the mileage dropped to about 22mpg. The worst mileage I have ever seen on the S65 in city driving is slightly above 12mpg. Mainly because at light throttle it upshifts at 1,300rpm, at moderate throttle it upshifts by 1,900rpm. By 2,200 rpm it already makes the full 738ft-lbs of torque so it is surprisingly economic in slower stop and go traffic. I consider 12mpg economic from a V12 BiTurbo compared to my old musclecars.
I have no doubt an S560 could see 30mpg on the interstate.
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