40mpg at 80mph
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From: Los Angeles
2002 c230k
40mpg at 80mph
I can't believe I got over 40mpg with the car going 80 mph! I reset the computer while I was on the freeway going a steady 80 on a nice flat area and I got over 40mpg over a 10 mile run! If only all the milage was that good in this car I'd be in heaven as I'm used to 13-14 around town.
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From: Canada
Re: 40mpg at 80mph
Originally posted by mdp c230k
I can't believe I got over 40mpg with the car going 80 mph! I'm used to 13-14 around town.
I can't believe I got over 40mpg with the car going 80 mph! I'm used to 13-14 around town.
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From: Central NJ
C230K Coupe/Orion/C4/C5/CD/AMG Spoiler/V60/TeleAid, 2 MGB's
I got 34.1 mpg on the trip to/from Montreal. Most of that driving was 72-77mph with climate control in EC mode. As soon as I turned AC on..it dropped to 31.8mpg.
I only dropped the hammer once on the way home....a white BMW 325ic wanted to run near Half Moon, NY....heheh.
I only dropped the hammer once on the way home....a white BMW 325ic wanted to run near Half Moon, NY....heheh.
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From: Nashua, NH
2008 VW GTI
Not surprising. It really doesn't require much power to maintain a constant speed on a relatively flat road with properly inflated (low rolling resistance) tires and no wind.
I remember reading years ago that it only required something like 5-10 horespower to keep a 5.0 Mustang going 55mph on a flat road.
I'm sure there's a way to calculate how much hp is needed to keep a coupe at 80mph.
The problem is: power is needed in accelerating up to that speed. My prediction for the future: transmissions will have more gears (like "big-rigs"), CVT transmissions (which will accomplish the same thing), and higher top-gear overdrives. Engines will have lower hp ratings and higher torque ratings (again, like "big-rigs"). When talking about fuel economy, I think the transportation industry knows what's required and how to get there. Auto manufacturers don't care about ecomomy because (at least in the US) the consumers don't care. Yet....
I remember reading years ago that it only required something like 5-10 horespower to keep a 5.0 Mustang going 55mph on a flat road.
I'm sure there's a way to calculate how much hp is needed to keep a coupe at 80mph.
The problem is: power is needed in accelerating up to that speed. My prediction for the future: transmissions will have more gears (like "big-rigs"), CVT transmissions (which will accomplish the same thing), and higher top-gear overdrives. Engines will have lower hp ratings and higher torque ratings (again, like "big-rigs"). When talking about fuel economy, I think the transportation industry knows what's required and how to get there. Auto manufacturers don't care about ecomomy because (at least in the US) the consumers don't care. Yet....
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From: SF Bay Area
2002 C230 K
Originally posted by avlis
I remember reading years ago that it only required something like 5-10 horespower to keep a 5.0 Mustang going 55mph on a flat road.
I'm sure there's a way to calculate how much hp is needed to keep a coupe at 80mph.
I remember reading years ago that it only required something like 5-10 horespower to keep a 5.0 Mustang going 55mph on a flat road.
I'm sure there's a way to calculate how much hp is needed to keep a coupe at 80mph.
Originally posted by avlis
My prediction for the future: transmissions will have more gears (like "big-rigs"), CVT transmissions (which will accomplish the same thing), and higher top-gear overdrives. Engines will have lower hp ratings and higher torque ratings (again, like "big-rigs").
My prediction for the future: transmissions will have more gears (like "big-rigs"), CVT transmissions (which will accomplish the same thing), and higher top-gear overdrives. Engines will have lower hp ratings and higher torque ratings (again, like "big-rigs").
Cheers, BT
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Re: Re: 40mpg at 80mph
Originally posted by viper
I don't believe it either. Unless you were going downhill in neutral I don't believe you can get that kind of mpg.
I don't believe it either. Unless you were going downhill in neutral I don't believe you can get that kind of mpg.
Try it sometime. Just call-up that "after start" page while you're on the highway and then reset it. Interesting, but totally unrealistic. Because you can't ignore the stop and go bits that get you to cruise speed. That is what chews up the gas.
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From: Ashburn, VA
'19 GLC 300, '19 TM3SR+
Originally posted by trench
This is correct. I have one of those G-Tech toys and very little HP (usually less than 10) is required to keep a car at steady speeds on the highway.
This is correct. I have one of those G-Tech toys and very little HP (usually less than 10) is required to keep a car at steady speeds on the highway.
In real world the higher the speed the more air resistance comes into play, the drag being a function of speed^2. This means, for example, that if at 40mph a car needs (hypothetically) 40hp, then at 80mph it would require 160hp to propel it forward at a steady pace.
Last edited by vadim; Jun 14, 2002 at 01:52 PM.
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From: Canada
Re: Re: Re: 40mpg at 80mph
Originally posted by MB-BOB
Viper, if you reset the "after start" computer while you are already moving at cruise speed, it will indeed calculate a higher mpg, because it resets the clock to zero and start speed from zero to your present speed, present throttle position, etc.
Try it sometime. Just call-up that "after start" page while you're on the highway and then reset it. Interesting, but totally unrealistic. Because you can't ignore the stop and go bits that get you to cruise speed. That is what chews up the gas.
Viper, if you reset the "after start" computer while you are already moving at cruise speed, it will indeed calculate a higher mpg, because it resets the clock to zero and start speed from zero to your present speed, present throttle position, etc.
Try it sometime. Just call-up that "after start" page while you're on the highway and then reset it. Interesting, but totally unrealistic. Because you can't ignore the stop and go bits that get you to cruise speed. That is what chews up the gas.
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From: SF Bay Area
2002 C230 K
Originally posted by vadim
GTech can't possibly measure this kind of things, since it's accelerometer based. This means that it requires that the car accelerate to produce any meaningful reading. It's just as useful as your wrist watch at a steady pace. The ~10hp reading likely reflects its accuracy (or, rather, inaccuracy in this case).
In real world the higher the speed the more air resistance comes into play, the drag being a function of speed^2. This means, for example, that if at 40mph a car needs (hypothetically) 40hp, then at 80mph it would require 160hp to propel it forward at a steady pace.
GTech can't possibly measure this kind of things, since it's accelerometer based. This means that it requires that the car accelerate to produce any meaningful reading. It's just as useful as your wrist watch at a steady pace. The ~10hp reading likely reflects its accuracy (or, rather, inaccuracy in this case).
In real world the higher the speed the more air resistance comes into play, the drag being a function of speed^2. This means, for example, that if at 40mph a car needs (hypothetically) 40hp, then at 80mph it would require 160hp to propel it forward at a steady pace.
Cheers, BT
Last edited by trench; Jun 14, 2002 at 02:16 PM.
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From: So. Oregon Coast
C230 Sport Coup + 2006 W164 ML350 + 99 Ford Escort RIP
Hey web guy,
How many miles are on your car?
DO you have automatic or manual?
I notice that if I go verrrry easy on the engine, I can get up to 27mpg, but thats my best so far, using cruise control with 91 octane gas.
What octane gas do they have in NJ, what are you running?
I only have 5K miles on it, and it seems to be getting a little better as time goes on.
It only take a couple of good romps to destroy my mileage, put it down to 20mgp. Having the car for a while now I see it's not neccessary to put the pedal down very far to get normal acceleration, something that took getting used to. Just barely touch the pedal most of the time.
Wish I could get closer to 30mpg on highway.
The only times I got less that 15mpg, I was pushing the car very hard down mountain roads.
When i bought the car I asked about break in, and they said just go easy on it. With the automatic there's little you can do to keep the revs down, it does what it wants so I have no doubt that the car went beyond that, but not within my control to get it to shift when I want it to. Sometimes it sorta hangs and just won't go; likely the adaptive tranny trying to help me out. They should program it to break itself in for the first 1K miles.
How many miles are on your car?
DO you have automatic or manual?
I notice that if I go verrrry easy on the engine, I can get up to 27mpg, but thats my best so far, using cruise control with 91 octane gas.
What octane gas do they have in NJ, what are you running?
I only have 5K miles on it, and it seems to be getting a little better as time goes on.
It only take a couple of good romps to destroy my mileage, put it down to 20mgp. Having the car for a while now I see it's not neccessary to put the pedal down very far to get normal acceleration, something that took getting used to. Just barely touch the pedal most of the time.
Wish I could get closer to 30mpg on highway.
The only times I got less that 15mpg, I was pushing the car very hard down mountain roads.
When i bought the car I asked about break in, and they said just go easy on it. With the automatic there's little you can do to keep the revs down, it does what it wants so I have no doubt that the car went beyond that, but not within my control to get it to shift when I want it to. Sometimes it sorta hangs and just won't go; likely the adaptive tranny trying to help me out. They should program it to break itself in for the first 1K miles.
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From: So. Oregon Coast
C230 Sport Coup + 2006 W164 ML350 + 99 Ford Escort RIP
When fools rush in......
!!
FOOLS!?
ANY Fool?
Hey buddy, we're not ANY fools, as in
Common Fools, we're more like uncommon fools!
;-)
No I think it was good someone pointed out how you did the reset WHILE already at speed.
Makes sense...fool!
Milage is of interest to me. I'm not too particularly satisfied with mine.
'sup foo ?
FOOLS!?
ANY Fool?
Hey buddy, we're not ANY fools, as in
Common Fools, we're more like uncommon fools!
;-)
No I think it was good someone pointed out how you did the reset WHILE already at speed.
Makes sense...fool!
Milage is of interest to me. I'm not too particularly satisfied with mine.
'sup foo ?
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Joined: Jan 2002
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From: Los Angeles
2002 c230k
C230 S C,
If you read my original post you will see that I mentioned that I reset it at speed and that I normally see an average of 13-14mpg! 'nuf said Fu.. Read before you fu...
If you read my original post you will see that I mentioned that I reset it at speed and that I normally see an average of 13-14mpg! 'nuf said Fu.. Read before you fu...
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From: Diamond Bar, CA
W206 PHEV AMG
Originally posted by Mark08859
Were you in cruise control mode or "standard" driving.
13 or 14 mpg around town seems very low even for a SC 4 cylinder. This is big SUV territory.
Were you in cruise control mode or "standard" driving.
13 or 14 mpg around town seems very low even for a SC 4 cylinder. This is big SUV territory.
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Yikes
Damn, this is exactly why i wish we could get the CDI diesel coupe here in america, with more or almost the same torque as the gas 2.3 liter engine and 60 mpg you can drive in style, have performance and still have money left over to take your woman out for ice cream. I think the diesel coupe accelerated 0-60 in 8 seconds. that's hardly slower than the gas, give that a chip and you'll probably have better performance and probably even better gas mileage.... I own a Passat right now and It rarely gets less than 48mpg. At 10 mpg I'd be freakin out!.
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From: Vancouver Island, B.C. Canada
2005 smart cabrio; 2008 Mercedes-Benz B 200
Re: CDI
Originally posted by AMGracer
Damn, this is exactly why i wish we could get the CDI diesel coupe here in america, with more or almost the same torque as the gas 2.3 liter engine and 60 mpg you can drive in style, have performance and still have money left over to take your woman out for ice cream. I think the diesel coupe accelerated 0-60 in 8 seconds.
Damn, this is exactly why i wish we could get the CDI diesel coupe here in america, with more or almost the same torque as the gas 2.3 liter engine and 60 mpg you can drive in style, have performance and still have money left over to take your woman out for ice cream. I think the diesel coupe accelerated 0-60 in 8 seconds.
C 220 CDI Sportcoupé
105 kW @ 4200 rpm
315 Nm @ 1800-2600 rpm
0-100 km/h: 10.3 s
Fuel economy:
8.6 L/100 km (27.3 MPG US), city driving
4.8 L/100 km (49.0 MPG US), highway driving
...so the car is not a realistic 60 MPG (US) prospect and it is certainly not an 8 second 0-60 MPH car either. The 220 CDI is the only diesel presently offered in the Sportcoupé (that's about to change, with the AMG Diesel coming soon). Note that the C 220 CDI has 35 Nm more torque than the 2002 C 230 Kompressor, and 55 Nm more than the upcoming 2003 C 230 Kompressor.
But what if they offered the C 270 CDI five banger in the Coupé?
From German C sedan brochure:
C 270 CDI Sedan
125 kW @ 4200 rpm
370 Nm @ 1600-2800 rpm
0-100 km/h: 8.9 s
Fuel economy:
9.7 L/100 km (24.2 MPG US), city driving
5.1 L/100 km (46.1 MPG US), highway driving
The stats would be identical if this engine was in the Coupé, except the highway figure might rise by 0.1 or 0.2 L/100 km due to the sedan's better aerodynamics. Even this car could not reach 60 MPH in 8 s, and it's not quite a 50 MPG car.
Either CDI car is damned nice on its own merits, but let's be realistic, there is no free lunch and so with these cars, 0-60 MPH in 8 s combined with 60 MPG US is not possible.
Last edited by Mike T.; Jun 15, 2002 at 01:40 AM.
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Okay yes your right... US MPG might not be quite so good..I keep forgeting AMERICAN MPG are different.......that's why every time i look at your TDI VW Beetles I wonder why you don't get 64 MPG like ours do. IT's interesting..... Still you have to admit even without 60 MPG US, your still getting amazing mileage and awesome performance figures. AMG DIESEL? that's definitely my kind of engine
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From: Diamond Bar, CA
W206 PHEV AMG
Re: Yikes
Originally posted by AMGracer
Damn, this is exactly why i wish we could get the CDI diesel coupe here in america, with more or almost the same torque as the gas 2.3 liter engine and 60 mpg you can drive in style, have performance and still have money left over to take your woman out for ice cream. I think the diesel coupe accelerated 0-60 in 8 seconds. that's hardly slower than the gas, give that a chip and you'll probably have better performance and probably even better gas mileage.... I own a Passat right now and It rarely gets less than 48mpg. At 10 mpg I'd be freakin out!.
Damn, this is exactly why i wish we could get the CDI diesel coupe here in america, with more or almost the same torque as the gas 2.3 liter engine and 60 mpg you can drive in style, have performance and still have money left over to take your woman out for ice cream. I think the diesel coupe accelerated 0-60 in 8 seconds. that's hardly slower than the gas, give that a chip and you'll probably have better performance and probably even better gas mileage.... I own a Passat right now and It rarely gets less than 48mpg. At 10 mpg I'd be freakin out!.
i guess fast car comes with a price of using a lot of fuel.
my C32 just went over 3k miles. i'm sure the mpg will get better as more miles are put in.
BTW i did freakin freak out with that 10 mpg. i thought something were wrong with my car...lol
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I can understand your low mpg with the supercharged v6 I Mean correct me if i'm wrong but your pushing over 350 hp in your c32. 20mpg would be about what I would expect, but a little coupe I'd hope would have a few digits toward the upper half of 20's to mid thirties
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From: Land of Make Believe, NJ
2002 C230K
Originally posted by C230 Sport Coup
Hey web guy,
How many miles are on your car?
Hey web guy,
How many miles are on your car?
DO you have automatic or manual?
I notice that if I go verrrry easy on the engine, I can get up to 27mpg, but thats my best so far, using cruise control with 91 octane gas. What octane gas do they have in NJ, what are you running?
I only have 5K miles on it, and it seems to be getting a little better as time goes on. It only take a couple of good romps to destroy my mileage, put it down to 20mgp. Having the car for a while now I see it's not neccessary to put the pedal down very far to get normal acceleration, something that took getting used to. Just barely touch the pedal most of the time.
Wish I could get closer to 30mpg on highway.
The only times I got less that 15mpg, I was pushing the car very hard down mountain roads.
