Which MPH gives the best MPG ?
01-02-2012, 08:08 AM
#76
55 mph
Aerodynamic drag increases with the square of velocity while frictional forces stay fairly constant. That means you need to work 4X as hard to go 2X as fast w.r.t. aerodynamic drag. Very little drag at low speeds, but when you hit about 50 mph it gets pretty significant. At about that point slower = better for mileage. If you have to downshift, to cruise at the slower speed, that is a problem, of course.
http://www.atmosphere.mpg.de/enid/In..._drag_507.html
http://www.atmosphere.mpg.de/enid/In..._drag_507.html
01-02-2012, 12:28 PM
#77
Super Member
Join Date: Sep 2003
Location: Murrieta, Southern California
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Late Built 2005 W-211 E-320 CDI
A Four Cylinder
Doesn't that taxi in your picture have 'E-200' on the left side of the trunk?
Hard to tell on my computer, but if so, I will bet the four cylinder
motors do much better fuel economy wise than do the E-320s.
What exact size and torque do the four cylinder E-200s have?
Also, what gear box and rearend ratios.
D
07-29-2014, 04:00 PM
#82
Here's my normal mileage after a 25 mile drive to work, includes uphill, downhill, 2nd gear creeping and one 20 second stoplight. Did 65mph for the most part with drops to 60mph
Garden State Pwky southbound in north nj.
RWD E320 with 99,000 miles
I just changed my air filters and wiped clean the tubes on the manifold. Going to do spark plugs this weekend hopefully I'll crank abit more mpg out of it.
Garden State Pwky southbound in north nj.
RWD E320 with 99,000 miles
I just changed my air filters and wiped clean the tubes on the manifold. Going to do spark plugs this weekend hopefully I'll crank abit more mpg out of it.
Jesus! how's that even possible? is this petrol or diesel ?
07-29-2014, 04:07 PM
#83
MBWorld Fanatic!
07-29-2014, 04:14 PM
#84
MBWorld Fanatic!
When I drive normally at 70mph, I average 32mpg.
With my driving style, combined with my tire and suspension setup, I average around 29mpg on my 2007 Bluetec Diesel; I'm happy.
With my driving style, combined with my tire and suspension setup, I average around 29mpg on my 2007 Bluetec Diesel; I'm happy.
07-29-2014, 04:29 PM
#85
MBWorld Fanatic!
^^^My 18" staggard knock at least 2 MPG off compared to the 16". But the grip is worth it - all that torque need some rubber.
You have some nice mods on that car.
You have some nice mods on that car.
07-30-2014, 11:47 AM
#86
i gotta change my spark plugs...
Here's my normal mileage after a 25 mile drive to work, includes uphill, downhill, 2nd gear creeping and one 20 second stoplight. Did 65mph for the most part with drops to 60mph
it is still unbelievable...
Here's my normal mileage after a 25 mile drive to work, includes uphill, downhill, 2nd gear creeping and one 20 second stoplight. Did 65mph for the most part with drops to 60mph
it is still unbelievable...
08-03-2014, 09:25 AM
#87
Member
My daily commute is 150 miles r/t with light traffic and only one minor hill (400') so I have a lot of opportunity to try minor changes on the same 'test circuit'.
For the past 15,000 miles I have been averaging 27.1 mpg in my E550 w/7sp with an average speed of 50mph (80% fwy & 20% city for me). The sweet spot for mileage seems to be 60-65 mph. If I drive at 70 mph I can definitely notice a drop in mileage.
The has just been my personal experience and is completely anecdotal. Your Mileage May Vary .
For the past 15,000 miles I have been averaging 27.1 mpg in my E550 w/7sp with an average speed of 50mph (80% fwy & 20% city for me). The sweet spot for mileage seems to be 60-65 mph. If I drive at 70 mph I can definitely notice a drop in mileage.
The has just been my personal experience and is completely anecdotal. Your Mileage May Vary
.
