Fuel Economy
Thread Starter
Newbie
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C32
Fuel Economy
I would like to start a thread on fuel econemy...
Basically i'm a Brit and currently the price of fuel here is around £103.9 per litre - which is a lot...
Anyhoo
For journeys trundling back and forth to work which is the more ecomical setting W or S? Also does it make a difference...
And secondly,
Are there any aftermarket parts which one can fit to a car that will actually increase mpg?
I had something called an ecotec on an old 328i which tbh I'm not sure worked as it was always on the car, but I did *feel* better for knowing it was there :-)
Opinions on this topic would be greatly received and I'm sure all of us wouldn't mind extra mpg??
Thanks and regards to fellow C AMGers!!
Basically i'm a Brit and currently the price of fuel here is around £103.9 per litre - which is a lot...
Anyhoo
For journeys trundling back and forth to work which is the more ecomical setting W or S? Also does it make a difference...
And secondly,
Are there any aftermarket parts which one can fit to a car that will actually increase mpg?
I had something called an ecotec on an old 328i which tbh I'm not sure worked as it was always on the car, but I did *feel* better for knowing it was there :-)
Opinions on this topic would be greatly received and I'm sure all of us wouldn't mind extra mpg??
Thanks and regards to fellow C AMGers!!
Thread Starter
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Joined: Nov 2007
Posts: 14
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C32
And again techinically is then W mode and starting off in second worse for the mpg - I can think of arguments on both sides tbh
Thanks!
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From: New Jersey
things with and without wheels
After reading the owner's manual and past discussions on this subject here on these boards that is the only difference that I'm aware of. As far as fuel economy goes the deeper into the throttle the more fuel you use, also if you start of in 1st and let it shift on it's own you will get the best fuel milage.
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CLS55 Designo 030
If you are concern about fuel economy be easy on the throttle and DON'T mod your car. Don't get a sprint booster either; you'll need to learn how to drive the car again to not kill your MPGs.
For some reason, I get worst mpg in W mode than in S (assuming being equal in the throttle). Maybe it's my driving style but I think it takes the car more effort in W mode.
For some reason, I get worst mpg in W mode than in S (assuming being equal in the throttle). Maybe it's my driving style but I think it takes the car more effort in W mode.
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2002 C32 AMG
Agree on the "don't mod" comment. When I added a pulley my average milege dropped about 3mpg. I was getting around 21mpg. When I added the pulley it dropped to about 18mpg. Could all be due to the way I drive the car now. Although I think I am over the initial fun phase so maybe it did go down for real.
Chuck
Chuck
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Joined: Nov 2003
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From: MILFORD,CT
E36M3 race car/Ferrari F355 GTS/1973 Mini 1275GT/Fiat Abarth/ML63/SLK55
good thread
i was about to start one myself.
the gas used in winter is oxygenated meaning ethanol is added which yeilds less BTUs (energy) per volume so car do get worse gas consumption.
in my experience the speed you drive at is very important - i get about 26-27 mpg at 55 mph, dropping to 21-22 at 70. drag increases disproportionately with increasing speed i forget if it exponentially or logaritmically.
now my car is fully modded but i don't think this affects mileage once you stay out of supercharger activation. (no lead foot).
my sl55 intake and plugs help my gas mileage a bit......plusg- don't laff i use splitfire platiniums. they work great, i've used them for years in lots of cars. i like the electrode design i think it physically allows more spark kernel.
heavy large diameter rims will hurt mileage as would wide tires.
how about you guys check see what you're getting- level road and different speeds? i use the odo reset i assume it's fairly accurate.
the gas used in winter is oxygenated meaning ethanol is added which yeilds less BTUs (energy) per volume so car do get worse gas consumption.
in my experience the speed you drive at is very important - i get about 26-27 mpg at 55 mph, dropping to 21-22 at 70. drag increases disproportionately with increasing speed i forget if it exponentially or logaritmically.
now my car is fully modded but i don't think this affects mileage once you stay out of supercharger activation. (no lead foot).
my sl55 intake and plugs help my gas mileage a bit......plusg- don't laff i use splitfire platiniums. they work great, i've used them for years in lots of cars. i like the electrode design i think it physically allows more spark kernel.
heavy large diameter rims will hurt mileage as would wide tires.
how about you guys check see what you're getting- level road and different speeds? i use the odo reset i assume it's fairly accurate.
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Joined: Jan 2006
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CLS55 Designo 030
i was about to start one myself.
the gas used in winter is oxygenated meaning ethanol is added which yeilds less BTUs (energy) per volume so car do get worse gas consumption.
in my experience the speed you drive at is very important - i get about 26-27 mpg at 55 mph, dropping to 21-22 at 70. drag increases disproportionately with increasing speed i forget if it exponentially or logaritmically.
now my car is fully modded but i don't think this affects mileage once you stay out of supercharger activation. (no lead foot).
my sl55 intake and plugs help my gas mileage a bit......plusg- don't laff i use splitfire platiniums. they work great, i've used them for years in lots of cars. i like the electrode design i think it physically allows more spark kernel.
heavy large diameter rims will hurt mileage as would wide tires.
how about you guys check see what you're getting- level road and different speeds? i use the odo reset i assume it's fairly accurate.
the gas used in winter is oxygenated meaning ethanol is added which yeilds less BTUs (energy) per volume so car do get worse gas consumption.
in my experience the speed you drive at is very important - i get about 26-27 mpg at 55 mph, dropping to 21-22 at 70. drag increases disproportionately with increasing speed i forget if it exponentially or logaritmically.
now my car is fully modded but i don't think this affects mileage once you stay out of supercharger activation. (no lead foot).
my sl55 intake and plugs help my gas mileage a bit......plusg- don't laff i use splitfire platiniums. they work great, i've used them for years in lots of cars. i like the electrode design i think it physically allows more spark kernel.
heavy large diameter rims will hurt mileage as would wide tires.
how about you guys check see what you're getting- level road and different speeds? i use the odo reset i assume it's fairly accurate.
I need to change my plugs to see how the car behaves.
A new fuel filter might also improve your MPGs.
Member
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From: Chicago
02C32AMG
True. In the US they add up to 10% Ethanol to the gas which will decrease the MPG since Ethanol doesn't have the same energy-per-unit as petroleum. Not sure if they add Ethanol to gas in the UK?
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2002 C32 AMG
It's probably not the fuel that is effecting my mileage. I live in S. Florida so I'm pretty sure we get the same stuff year round. I do average 70+ on most of my drive. If I drive around 60 or so and reset the computer it shows that I could probably get around 24-25mpg.
Chuck
Chuck
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From: PA
S600, GL450, GLC 43
See yeah
PS: Back in the 80's I use to add 1 gallon of ethanol to 10 gallons of premium for the race car, again CHEAP octane booster. 10% is about all the higher you want to go with on the street, before water problems/corrosion/and lean outs will occur.
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LET C32 2002
It's probably not the fuel that is effecting my mileage. I live in S. Florida so I'm pretty sure we get the same stuff year round. I do average 70+ on most of my drive. If I drive around 60 or so and reset the computer it shows that I could probably get around 24-25mpg.
Chuck
Chuck
maybe it is the feul but then again I was rushing 70+ coming home
.
MBWorld Fanatic!
Joined: Jan 2007
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From: PA
S600, GL450, GLC 43
It's probably not the fuel that is effecting my mileage. I live in S. Florida so I'm pretty sure we get the same stuff year round. I do average 70+ on most of my drive. If I drive around 60 or so and reset the computer it shows that I could probably get around 24-25mpg.
Chuck
Chuck
See yeah
MBWorld Fanatic!
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From: Canada
C55 AMG, 135i, 911 GT3, GLE43 AMG
In my C55, the best fuel economy happens in C mode, mainly because the car short shifts automatically to keep the rpm's down (which means using less fuel). But the most important factor really is driving without a lead foot. There is so much low rpm torque in our cars that I rarely have to rev above 2500 rpm's to move around in the city and keep up with the general flow of traffic. Try that, and I guarantee your fuel consumption will improve.
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From: MILFORD,CT
E36M3 race car/Ferrari F355 GTS/1973 Mini 1275GT/Fiat Abarth/ML63/SLK55
oh yeah i leave in W when i knew the wife was driving it. she had a heavy foot and i would curse when she pulled off with a cold motor. so W for her- 2nd gear. 
fuel consumption gets better and better slower you go but heck i cant drive 45 mph.
fuel consumption gets better and better slower you go but heck i cant drive 45 mph.
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From: MILFORD,CT
E36M3 race car/Ferrari F355 GTS/1973 Mini 1275GT/Fiat Abarth/ML63/SLK55
Interesting post AWDman. So what you are saying is even at Stage 2 you can get +25 mpg by cruising at 55 mph w/o engaging the SC (<2,900 rpm). I'm going to give that a try. My rims are RT Monolite 18s. They're supposely one of the lightest rims available for the W203.
I need to change my plugs to see how the car behaves.
A new fuel filter might also improve your MPGs.
I need to change my plugs to see how the car behaves.
A new fuel filter might also improve your MPGs.
yeah the monolites are good.
now the c32 will never be an economy car but compared to the c63 or m3 we will get better consumption. just have to stay out of s/c engagement. ell,
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C32
Thanks for all your replies guys - I'm gonna stick on S unless it's properly Winter I guess.
Also some good points by all - and I know we don't drive economical cars, kinda an either or thing - but it's good to know we have quite some performance there when we want it!!!
:-)
Also some good points by all - and I know we don't drive economical cars, kinda an either or thing - but it's good to know we have quite some performance there when we want it!!!
:-)
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C32
Just another question on this...
Have any of you guys noticed when you turn off the engine the fuel needle is at wherever on the scale and then after a while you get back in the car and start it up the fuel needle is quite a bit lower???
Or is my car hemorrhaging petrol?
I've checked under the car when I reverse and can't see much but it's raining all the time here at this time of the year so is hard to tell properly?
Thanks!!!
Have any of you guys noticed when you turn off the engine the fuel needle is at wherever on the scale and then after a while you get back in the car and start it up the fuel needle is quite a bit lower???
Or is my car hemorrhaging petrol?
I've checked under the car when I reverse and can't see much but it's raining all the time here at this time of the year so is hard to tell properly?
Thanks!!!
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Joined: Oct 2006
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02 C32 AMG
Just another question on this...
Have any of you guys noticed when you turn off the engine the fuel needle is at wherever on the scale and then after a while you get back in the car and start it up the fuel needle is quite a bit lower???
Or is my car hemorrhaging petrol?
I've checked under the car when I reverse and can't see much but it's raining all the time here at this time of the year so is hard to tell properly?
Thanks!!!
Have any of you guys noticed when you turn off the engine the fuel needle is at wherever on the scale and then after a while you get back in the car and start it up the fuel needle is quite a bit lower???
Or is my car hemorrhaging petrol?
I've checked under the car when I reverse and can't see much but it's raining all the time here at this time of the year so is hard to tell properly?
Thanks!!!
pre-sprintbooster: city ~17
post-sprintbooster: city ~16
SB w/ pulley: city ~ 14.5
like i said, my foot = lead
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From: Perth Australia
2002 C32 Stock at the moment
I did a 1000km trip last week and returned 10.3l/100km approx 23mpgUS or 28mpgUK this was with the cruise control set at 115kmh 73mph, with the occasional overtaking to 200kmh 125mph, IMO this is fantastic milage from a car with the performance of the C32
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From: MIAMI
2004 c32, 91 GMC SYCLONE AND AN 08 CBR 600RR(MAN THIS THING IS FAST)
damm thats good im lucky if i get 15 mpg and im stock but i drive it like i stole it.
