2006 E350 best RPM on highway for fuel economy?
Thread Starter
Junior Member
Joined: Jan 2017
Posts: 34
Likes: 0
06' Mercedes Benz E350 n E55 AMG
2006 E350 best RPM on highway for fuel economy?
Hi
Any Benz experts out there who would possibly know the best RPM range and speed for the E350 in the highest gear on a highway which gives the best fuel economy?
These things are vehicle specific so i want to know about the w211 E350.
Any Benz experts out there who would possibly know the best RPM range and speed for the E350 in the highest gear on a highway which gives the best fuel economy?
These things are vehicle specific so i want to know about the w211 E350.
Thread Starter
Junior Member
Joined: Jan 2017
Posts: 34
Likes: 0
06' Mercedes Benz E350 n E55 AMG
BTW THIS IS A ****ING FORUM where people ask damn questions...
hate those people who tryna act over smart and thinks its funny...
yes just drive the damn thing why is there a forum for every freaking car brands out there?
MBWorld Fanatic!
Joined: Jan 2009
Posts: 9,225
Likes: 1,798
From: V E G A S
1922 Ford Model T / no OBD
Don't ask AMG owner for tips on driving economy 
Usually the best mpg is achieved at the lowest speed the highest gear will hold without downshifting. On MB expect it about 60 mph.
That said each engine is having its "sweet spot" so doing some real life testing will refine the experience.
Usually the best mpg is achieved at the lowest speed the highest gear will hold without downshifting. On MB expect it about 60 mph.
That said each engine is having its "sweet spot" so doing some real life testing will refine the experience.
MBWorld Fanatic!
Joined: Jan 2010
Posts: 3,249
Likes: 257
From: Richmond, CA
2001 E320 Wagon, 2006 LBZ Silverado, 2007 E63 (sold), 2001 E55 (sold)
Your question would have been a reasonable one if your car had a manual transmission. Seeing how it's an auto they generally choose the best ratio based on the conditions. Having said that, "just drive the damn thing" is ok advice. If you're so concerned about gas mileage why would you buy a MB instead of an econo car?
Trending Topics
MB World Stories
The Best of Mercedes & AMG
6 Mercedes Models That Did NOT Age Well (But Are Somehow Still Cool)
Verdad Gallardo
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
Thread Starter
Junior Member
Joined: Jan 2017
Posts: 34
Likes: 0
06' Mercedes Benz E350 n E55 AMG
Don't ask AMG owner for tips on driving economy
Usually the best mpg is achieved at the lowest speed the highest gear will hold without downshifting. On MB expect it about 60 mph.
That said each engine is having its "sweet spot" so doing some real life testing will refine the experience.
Usually the best mpg is achieved at the lowest speed the highest gear will hold without downshifting. On MB expect it about 60 mph.
That said each engine is having its "sweet spot" so doing some real life testing will refine the experience.
yup i have done some real life testing and wait a minute thats not true.
highest gear lowest speed actually takes in more fuel due to the stress the engine takes to maintain that low speed without shifting back
Thread Starter
Junior Member
Joined: Jan 2017
Posts: 34
Likes: 0
06' Mercedes Benz E350 n E55 AMG
Your question would have been a reasonable one if your car had a manual transmission. Seeing how it's an auto they generally choose the best ratio based on the conditions. Having said that, "just drive the damn thing" is ok advice. If you're so concerned about gas mileage why would you buy a MB instead of an econo car?
MBWorld Fanatic!
Joined: Jan 2009
Posts: 9,225
Likes: 1,798
From: V E G A S
1922 Ford Model T / no OBD
The mpg is the result of engine efficiency, air drag and rolling resistance, so you can't calculate the final result on paper.
Air drag increase with square of speed and I experienced that going from 60 mph to 70 mph usually drops the mpg by 20-25%.
Engine as mentioned before - is most efficient at peak of its torque. That for gasoline engine is often in 5000 rpm range. Would you like to drive with this rpm on top gear, the high speed will create huge air drag, so even the engine will produce HP at lowest fuel amount, you will use lot of fuel to fight air drag.
My diesels pull comfortably on top gear and 1200 rpm, but diesel shines here with "flat" torque curve. My truck pulls 5% grades at 1200 rpm, while pulling 4-ton trailer and I am not worry about engine stress
On some occasions you can find that pulling grade on lower gear will give you better mpg that feathering it on top gear, but that would be splitting the hair.
Last edited by kajtek1; Jun 25, 2018 at 01:45 PM.
MBWorld Fanatic!
Joined: Jan 2010
Posts: 3,249
Likes: 257
From: Richmond, CA
2001 E320 Wagon, 2006 LBZ Silverado, 2007 E63 (sold), 2001 E55 (sold)
Thread Starter
Junior Member
Joined: Jan 2017
Posts: 34
Likes: 0
06' Mercedes Benz E350 n E55 AMG
You worry about engine stress with 300 HP under the hood?
The mpg is the result of engine efficiency, air drag and rolling resistance, so you can't calculate the final result on paper.
Air drag increase with square of speed and I experienced that going from 60 mph to 70 mph usually drops the mpg by 20-25%.
Engine as mentioned before - is most efficient at peak of its torque. That for gasoline engine is often in 5000 rpm range. Would you like to drive with this rpm on top gear, the high speed will create huge air drag, so even the engine will produce HP at lowest fuel amount, you will use lot of fuel to fight air drag.
My diesels pull comfortably on top gear and 1200 rpm, but diesel shines here with "flat" torque curve. My truck pulls 5% grades at 1200 rpm, while pulling 4-ton trailer and I am not worry about engine stress
On some occasions you can find that pulling grade on lower gear will give you better mpg that feathering it on top gear, but that would be splitting the hair.
The mpg is the result of engine efficiency, air drag and rolling resistance, so you can't calculate the final result on paper.
Air drag increase with square of speed and I experienced that going from 60 mph to 70 mph usually drops the mpg by 20-25%.
Engine as mentioned before - is most efficient at peak of its torque. That for gasoline engine is often in 5000 rpm range. Would you like to drive with this rpm on top gear, the high speed will create huge air drag, so even the engine will produce HP at lowest fuel amount, you will use lot of fuel to fight air drag.
My diesels pull comfortably on top gear and 1200 rpm, but diesel shines here with "flat" torque curve. My truck pulls 5% grades at 1200 rpm, while pulling 4-ton trailer and I am not worry about engine stress
On some occasions you can find that pulling grade on lower gear will give you better mpg that feathering it on top gear, but that would be splitting the hair.
Super Member
Joined: Apr 2007
Posts: 633
Likes: 48
From: USA
2006 E320 CDI
I can get 41 mpg with a breeze behind me when doing 80mph, but typically is 35-38 mpg at 70-75mph, 2500 rpm, more than 700 miles per tank too highway speeds, 320!!
MBWorld Fanatic!
Joined: Jan 2009
Posts: 9,225
Likes: 1,798
From: V E G A S
1922 Ford Model T / no OBD
Would be interesting to hear comparing computer calculations to actuall fill-ups?
My MB usually have 3% margin error between the 2 and I am using fuelly for keeping the records.
Latest E250BT comes pretty accurate in city driving, but up to 5% error for freeway mpg.
My 2017 Ford Truck makes 1-2% errors.
My MB usually have 3% margin error between the 2 and I am using fuelly for keeping the records.
Latest E250BT comes pretty accurate in city driving, but up to 5% error for freeway mpg.
My 2017 Ford Truck makes 1-2% errors.
Thread Starter
Junior Member
Joined: Jan 2017
Posts: 34
Likes: 0
06' Mercedes Benz E350 n E55 AMG
Are you aware there is an instantaneous MPG readout on the dash, and even if it may not be 100% accurate to actual, it will give you comparison MPG for when you're driving 50 vs. say 70mph.
I can get 41 mpg with a breeze behind me when doing 80mph, but typically is 35-38 mpg at 70-75mph, 2500 rpm, more than 700 miles per tank too highway speeds, 320!!
I can get 41 mpg with a breeze behind me when doing 80mph, but typically is 35-38 mpg at 70-75mph, 2500 rpm, more than 700 miles per tank too highway speeds, 320!!
Last edited by hAwX; Jun 27, 2018 at 12:38 PM.
Thread Starter
Junior Member
Joined: Jan 2017
Posts: 34
Likes: 0
06' Mercedes Benz E350 n E55 AMG
Would be interesting to hear comparing computer calculations to actuall fill-ups?
My MB usually have 3% margin error between the 2 and I am using fuelly for keeping the records.
Latest E250BT comes pretty accurate in city driving, but up to 5% error for freeway mpg.
My 2017 Ford Truck makes 1-2% errors.
My MB usually have 3% margin error between the 2 and I am using fuelly for keeping the records.
Latest E250BT comes pretty accurate in city driving, but up to 5% error for freeway mpg.
My 2017 Ford Truck makes 1-2% errors.
If my dash shows 10km per litre (23mpg) i actually get 7-8kmpl (16mpg)
On a full tank i mostly get 280miles and that can go upto 311miles based on more highway drives... I wud say its from 75% highway and 25% city
Its my daily but i treat it the same way i treat my AMG
Last edited by hAwX; Jun 27, 2018 at 12:37 PM.
Thread Starter
Junior Member
Joined: Jan 2017
Posts: 34
Likes: 0
06' Mercedes Benz E350 n E55 AMG
