View Poll Results: how much do you spend on gas for your car per month?
less than $25
1
1.61%
$25 to $50
16
25.81%
$51 to $75
9
14.52%
$76 to $100
20
32.26%
more than $100
16
25.81%
Voters: 62. You may not vote on this poll
The C-Class GAS MILEAGE thread
MBWorld Fanatic!
Joined: Mar 2006
Posts: 2,090
Likes: 11
From: SF Bay Area, CA
2006 E55 and 2002 E320
Driving at 100 mph on the highway achieves about the same fuel economy as driving around in city traffic. Frankly, combined with the fact that winter fuel has less BTU per gallon, I think you're about right.
Senior Member
Joined: Sep 2007
Posts: 399
Likes: 0
From: NorCal
'02 CL203 M111
Yeah, try to drive like a gramma, it actually works!
I use to get 22mpg in city and 28 on freeway(20minutes trip), I hit 32 once 2hour trip. When I tryied the gramma style in city I got 25-26
I was so amazed. that was my discovery of the month!
(Shift early at 2K rpm and rev a lil more for higher gears without reaching 2.5k rpm so the supercharger wont kick in at least for my M111).
I use to get 22mpg in city and 28 on freeway(20minutes trip), I hit 32 once 2hour trip. When I tryied the gramma style in city I got 25-26
I was so amazed. that was my discovery of the month!
(Shift early at 2K rpm and rev a lil more for higher gears without reaching 2.5k rpm so the supercharger wont kick in at least for my M111).
MBWorld Fanatic!
Joined: Dec 2006
Posts: 1,105
Likes: 11
From: Toronto, Canada
2019 C300 Wagon; '75 Triumph TR6; previous: 2004 C230 6spd sold after 17 years of driving
If I drive aggressively on the highway
130-140km/hr 9-10L/100km (23-25mpg)
If I drive conservatively using cruise control
108-115km/hr 6.8-8L/100km (29-34mpg)
Lower number is better
It is amazing how much better the fuel mileage when you drop your speed from 130 to 105km/h (81mph to 65mph)
The optimum economy is at 85-90km/h (50-55mph) Grandma driving and once I did that on the highway for a test and got 6.5L/100km (36mpg)
130-140km/hr 9-10L/100km (23-25mpg)
If I drive conservatively using cruise control
108-115km/hr 6.8-8L/100km (29-34mpg)
Lower number is better
It is amazing how much better the fuel mileage when you drop your speed from 130 to 105km/h (81mph to 65mph)
The optimum economy is at 85-90km/h (50-55mph) Grandma driving and once I did that on the highway for a test and got 6.5L/100km (36mpg)
Last edited by Boom vang; Dec 12, 2007 at 08:06 AM.
Super Member
Joined: Oct 2007
Posts: 537
Likes: 2
From: Charlotte, NC
2013 S550, CLS500, ‘03 SL500, “92 190E Sportline
my tires were underinflated
perhaps this was also an issue. I went to check the air in my tires, and they were all underinflated, by about 10 lbs...so I fixed that, and hopefully this will make a difference...
MBWorld Fanatic!
Joined: Jan 2006
Posts: 3,212
Likes: 8
From: Pasadena, CA
2002 C230K, 2013 BMW 328, 2015 BMW X5
Super Member
Joined: Oct 2007
Posts: 537
Likes: 2
From: Charlotte, NC
2013 S550, CLS500, ‘03 SL500, “92 190E Sportline
mine were closer to 30lbs psi
I have the amg wheels, i think the max is 44 psi for the back, 40 psi for the front. All the tires were at about 30 lbs psi when I checked, so I added air. I've been driving the car around town (city driving), and it does seem like the mpg has gone up (according to the computer). But I really do my determinations by how many miles I get per tank, and how many gallons I fill up.
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MBWorld Fanatic!
Joined: Mar 2006
Posts: 2,090
Likes: 11
From: SF Bay Area, CA
2006 E55 and 2002 E320
I have the amg wheels, i think the max is 44 psi for the back, 40 psi for the front. All the tires were at about 30 lbs psi when I checked, so I added air. I've been driving the car around town (city driving), and it does seem like the mpg has gone up (according to the computer). But I really do my determinations by how many miles I get per tank, and how many gallons I fill up.
Super Member
Joined: Oct 2007
Posts: 537
Likes: 2
From: Charlotte, NC
2013 S550, CLS500, ‘03 SL500, “92 190E Sportline
MBWorld Fanatic!
Joined: Dec 2006
Posts: 1,105
Likes: 11
From: Toronto, Canada
2019 C300 Wagon; '75 Triumph TR6; previous: 2004 C230 6spd sold after 17 years of driving
Those are incredibly high pressures and far from what is recommended for the car. You must feel each expansion joint and pebble on the road.
FYI our tire pressures are not what is printed on the sidewall of our tires.
FYI our tire pressures are not what is printed on the sidewall of our tires.
Super Member
Joined: Oct 2007
Posts: 537
Likes: 2
From: Charlotte, NC
2013 S550, CLS500, ‘03 SL500, “92 190E Sportline
of course they are...
Super Member
Joined: Oct 2007
Posts: 537
Likes: 2
From: Charlotte, NC
2013 S550, CLS500, ‘03 SL500, “92 190E Sportline
Thanks Leif
In the winter, car's get less mpg, maybe 2-3mpg less. I can't wait till spring, it's way too cold up here!
http://www.tundrasolutions.com/forum...ng-my-mileage/
MBWorld Fanatic!
Joined: Feb 2005
Posts: 3,543
Likes: 2
From: Connecticut
excites your girlfriend
I have the amg wheels, i think the max is 44 psi for the back, 40 psi for the front. All the tires were at about 30 lbs psi when I checked, so I added air. I've been driving the car around town (city driving), and it does seem like the mpg has gone up (according to the computer). But I really do my determinations by how many miles I get per tank, and how many gallons I fill up.
Senior Member
Joined: Jan 2008
Posts: 340
Likes: 1
From: South Fla.
06' C230SS
...and to think I was proud to accomplish 33 mpg on my way to key largo this friday and 31 on my way back to ft lauderdale tonight! 1hour 20min drive. cant remember avg mph somewhere between 58-62 even though I was 80 most the time after the stretch leaving the keys and maintaining that on the turnpike. no sunpass for this paticular trip-- had to stop at 4 tolls! 
****ttyyy hahah 
gj MB, was VERY surprised with my mileage even for the highway. --now i need to put in my new air filters that are just sitting here staring at me, and try again!
Super Member
Joined: Oct 2007
Posts: 537
Likes: 2
From: Charlotte, NC
2013 S550, CLS500, ‘03 SL500, “92 190E Sportline
The most mpg the computer has told me I've gotten was 37mpg, without resetting the computer.
I reset the computer once, while I was in motion, and the computer went up to 40mpg, but that doesn't count lol...
However, the most mpg per tank that I've gotten has been about 25. (Dividing miles driven by gallons filled)
I would love to get 30mpg per tank. It would make me feel like I'm fueling my 94 Corolla again lol...
I reset the computer once, while I was in motion, and the computer went up to 40mpg, but that doesn't count lol...
However, the most mpg per tank that I've gotten has been about 25. (Dividing miles driven by gallons filled)
I would love to get 30mpg per tank. It would make me feel like I'm fueling my 94 Corolla again lol...
Member
Joined: Mar 2008
Posts: 122
Likes: 0
2009 JK Unlimited Detonator Yellow
bumping this one up..
so i was actually getting around 34 on my first couple trips with the 05 komp.. well now i cant get the computer to read any where past 27 on the same trip and the same speed on my way to work with the 06
is there really THAT much difference ?? i mean i know the komp is a 4 banger, but you add that SC to it, it SHOULD equal out to the 2.5 in fuel economy????
ughh feels like i took the lessor of the two evils
worse gas mileage, but a more "reliable" engine
also.. that 7 spd driver adaptive transmission.. say the person that had the car before i did beat the **** outa it, and the transmission shifted to that persons driving style, would that possibly effect the mileage at all??
i know thats a stretch, but it makes me wonder... if so, how long will it take to get the computer to adjust to my driving
so i was actually getting around 34 on my first couple trips with the 05 komp.. well now i cant get the computer to read any where past 27 on the same trip and the same speed on my way to work with the 06
is there really THAT much difference ?? i mean i know the komp is a 4 banger, but you add that SC to it, it SHOULD equal out to the 2.5 in fuel economy????
ughh feels like i took the lessor of the two evils
worse gas mileage, but a more "reliable" engine
also.. that 7 spd driver adaptive transmission.. say the person that had the car before i did beat the **** outa it, and the transmission shifted to that persons driving style, would that possibly effect the mileage at all??
i know thats a stretch, but it makes me wonder... if so, how long will it take to get the computer to adjust to my driving
Member
Joined: Mar 2008
Posts: 122
Likes: 0
2009 JK Unlimited Detonator Yellow
Senior Member
Joined: Jan 2008
Posts: 340
Likes: 1
From: South Fla.
06' C230SS
afhockey31- also.. that 7 spd driver adaptive transmission.. say the person that had the car before i did beat the **** outa it, and the transmission shifted to that persons driving style, would that possibly effect the mileage at all??
anyway, try something along the lines of puttin the key in the ignition in the on position without cranking the engine. press and firmly hold your gas pedal completely to the floor. hold it there for 5 or 6 seconds and release. now walk away for 2-3 minutes or just listen to a good song, and it should be reset i dont know if it will help mileage at all, maybe shift faster not over-revving is something you are looking for? its worth a try!
35mpg mostly highway with @ 12 traffic lights this morning.
