Getting 210 miles on tank of gas....
If I recall correctly the EPA fuel economy ratings were roughly 18 mpg (city) and 25 mpg (highway). Given that these figures are achieved with the first gear to fourth gear "skip shift" in manual cars, I imagine we would lose some economy simply by shifting through the gears. Furthermore, I imagine each of our driving styles is a little different driving to and from work (when we're simply trying to get from point A to point B) than the testers driving in an attempt to record higher fuel economy figures.
That being said, with 3.90's in the rear, I get around 13 - 14 mpg in the city driving (unfortunately, in Atlanta that often times means sitting in bumper to bumer traffic for very long periods of time) and I get roughly 20 - 21 mpg on the highway. All in all, not bad for a car making that kind of power.
To the OP.....210 miles for a tank of gas sounds a little low, however it isn't far off from the norm for me. I have a mix of city and highway driving and typically get 230 per tank. When I go a week without getting out on the highway much, that figure typically drops to 200 - 210 miles.
As for the guys with modded LS1's getting 28 or 29 mpg, I'd absolutely LOVE to see how they achieve that with "normal" driving habits.
That being said, with 3.90's in the rear, I get around 13 - 14 mpg in the city driving (unfortunately, in Atlanta that often times means sitting in bumper to bumer traffic for very long periods of time) and I get roughly 20 - 21 mpg on the highway. All in all, not bad for a car making that kind of power.
To the OP.....210 miles for a tank of gas sounds a little low, however it isn't far off from the norm for me. I have a mix of city and highway driving and typically get 230 per tank. When I go a week without getting out on the highway much, that figure typically drops to 200 - 210 miles.
As for the guys with modded LS1's getting 28 or 29 mpg, I'd absolutely LOVE to see how they achieve that with "normal" driving habits.
210 does seem a little low, but not "terrible". I only get about 240 before I get to E and that is how it was stock too. I didnt lose any MPG with boltons/cam/tune. 300 miles to a tank might seem "normal" when you do the math, but most won't get that. When I do the math with my car, I get about 17.5mpg usually and thats 50/50 driving. When I took it on a long trip i got 28mpg on the freeway going 70-75mph.
210 miles per tank is awful. There's something seriously wrong there. Stockish F-body's should get 100 miles per tank more than that.
Try Seafoaming your car. Also, go to Autozone and get a $7 can of MAF cleaner. Your MAF may be dirty, which could cause problems. You may want to consider changing the other O2 sensor, also. Usually, if one goes bad, the other going bad is right around the corner. You may not be throwing a code, but it may be on its way out, causing you bad mileage.
Also, a real dynotune would seriously help your situation, especially if you're running longtubes untuned. Since you never floor it, you're probably running pig rich, causing poor mileage.
Try Seafoaming your car. Also, go to Autozone and get a $7 can of MAF cleaner. Your MAF may be dirty, which could cause problems. You may want to consider changing the other O2 sensor, also. Usually, if one goes bad, the other going bad is right around the corner. You may not be throwing a code, but it may be on its way out, causing you bad mileage.
Also, a real dynotune would seriously help your situation, especially if you're running longtubes untuned. Since you never floor it, you're probably running pig rich, causing poor mileage.
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Modded I can still pull anywhere from 300-350 highway miles.
If it's all city or spirited driving, 250 is pretty much the norm.
In my stock form, pre cam, 400+ was possible on highway. The cam + tune pretty much f-ed my highway mileage.
Headers, true duals, ls6 intake, lid all combined to make the car more powerful, but kept the efficiency up there. I had gained 50 hp and 44ft/lb of torque across the board but lost no appreciable mileage.
give it a general tune-up first, clean the maf, seafoam the block and fuel.
If it's all city or spirited driving, 250 is pretty much the norm.
In my stock form, pre cam, 400+ was possible on highway. The cam + tune pretty much f-ed my highway mileage.
Headers, true duals, ls6 intake, lid all combined to make the car more powerful, but kept the efficiency up there. I had gained 50 hp and 44ft/lb of torque across the board but lost no appreciable mileage.
give it a general tune-up first, clean the maf, seafoam the block and fuel.
I just looked at mine the past two weeks nd used almost 13 gallons nd got 250 miles all city/town driving..highway i drove to Fl. nd got bout 350-370 using bout 13 gallons goin 90mph
Tech Resident
Joined: Jan 2006
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From: Philly
Go to Autozone/Advance Auto/etc and get a can of Mass Air Flow (MAF) sensor cleaner. It's only ~$7. You should use actual MAF cleaner as the MAF is electronic. Don't even think about spraying water on it or alcohol or anything. The MAF cleaner evaporates almost instantaneously so it doesn't keep the electronics wet.
Launching!
Joined: Sep 2007
Posts: 230
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From: Surrey, BC
I've had my 2000 M6 T/A since August (only installed a lid & skip shift since). And I get 180, pritty much exactly (never over) to a tank, I've tried different gas stations and different octanes (we get 94 here) but nothing makes a difference (even 87 octane returned 180 miles to a tank). I mix city (70%) and highway (30%) most of the time.
I guess I should seafoam/MAF clean my car too?
I guess I should seafoam/MAF clean my car too?
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From: Bensalem, Pa, now montreal, Quebec
I think i probably get the worse mileage on the site for the mods i have. Just a bolton car and i get around 9-12 city(granted it was cold out and its short trips, but still). Last time hwy i got 28. Car is fully tuned, new plugs, etc. I took out EGR/Air but i always thought when you add headers the engine is more efficient and possibly you might get a mpg boost. This is granny driving, i think i would be in the 8s if i actually got the car over 3k once in awhile!
No it doesn't. 20 mpg in these cars in stock trim should be a given since they are rated at 19/29. If you get 20 mpg, in the 16 gallon gas tank, you should be pulling 320 miles per tank. That should be EASILY attainable in stock trim, and with small exhaust and intake mods and a tune, you should be getting even better results. If you have a lid/catback car and a dynotune, there is no reason why you shouldn't be getting 300-350 miles per tank, assuming you fill up on E. I usually fill up every 180 miles when my needle is right about on the half way mark of the fuel gauge.
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I just guesstimated my latest tank of gas, I'm hitting roughly 17mpg with mostly city driving 90% city /10% highway. Most of that was stop and go traffic too. If you are going to make more hp and torque, you're going to eat more fuel.
To get a better gauge on mpg, I'd fill up the tank, reset the trip meter, take a mental note of how many miles are on highway and how many are in city then take heed of the numbers at next fill up ie how many gallons it took to fill up again and how many miles driven. That should give you a better idea if your car is actually eating more gas than it should be.
To get a better gauge on mpg, I'd fill up the tank, reset the trip meter, take a mental note of how many miles are on highway and how many are in city then take heed of the numbers at next fill up ie how many gallons it took to fill up again and how many miles driven. That should give you a better idea if your car is actually eating more gas than it should be.
My fuel sender and/or fuel gauge is whack, so I start to get nervous after 130 miles on my 15.5G tank. I typically get 13-15mpg in the city but I haven't measured it strictly on the highway. I don't think the '98's have an idiot light for fuel level, do they?
I get around 250 mixed highway/city but I am heads and cam M6. Threw a code the other day but it has since gone away. I plan on putting it on a dyno in a little bit but i'm not complaining. Pay to play.
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Joined: Jan 2006
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From: Philly
I refill every ~180 miles. It comes out to be 9 gallons of gas on average, usually a little less, meaning I average about 21 mpg. From there, you multiply your mpg by the number of gallons your tank holds. 21x16=336. That means I average about 330 miles per tank.
We're talking about mileage PER TANK. That means to the last drop. If you refill every 200 miles and you still have 1/4 tank left, then you don't get 200 miles per tank.
I refill every ~180 miles. It comes out to be 9 gallons of gas on average, usually a little less, meaning I average about 21 mpg. From there, you multiply your mpg by the number of gallons your tank holds. 21x16=336. That means I average about 330 miles per tank.
I refill every ~180 miles. It comes out to be 9 gallons of gas on average, usually a little less, meaning I average about 21 mpg. From there, you multiply your mpg by the number of gallons your tank holds. 21x16=336. That means I average about 330 miles per tank.
I define "per tank" as to to when the light comes on, because that's when I'll stop for gas.
Going by that, I've gotten anywhere from 275-310 miles per tank.
Stock except for a lid, with an A4 and 2.73's.
I normally get about 22mpg or so, and I drive mostly highway at 65-70mph.
I wish these had a bigger tank though. I'm okay with the mileage, I just wish I could go a week on a fill-up. I drive about 330 per week, so I have to fill up twice.
Either that, or I need to squeeze 2mpg more out of it.
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Joined: Jan 2006
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From: Philly
What part of "per tank" do you not understand? If you still have 3 gallons of gas left in your tank, then you are not calculating your mileage PER TANK. You are calculating your mileage per 13/16th of a tank.
If you want to know the mileage per tank, calculate your mpg and multiply it by the number of gallons in the gas tank. That is your "mileage per tank," and there is absolutely no argument there.
Yes, technically you're right, but most people don't run their car till it's empty, so that number doesn't really mean anything in the real world.
But okay, if we're going to be so literal, I'll change my wording. I get 275-310 miles per FILL UP. I generally fill up right around the time the light comes on.
Here is my rant about fuel usage on the track, read if you want, ignore it for most because it is amazingly inpractical
I can't see anyone with a track car caring about how many gallons of fuel they use. Ok, well since I am a dork and I'm gonna be technical, due to the weight added with fuel, you should only have as much fuel in your car as it is going to take you to make it to the 1/4 mile line, anything more slows you down by adding weigh. You can refuel after your run. However, I doubt this will help you much and I am a college student that just took a course in inventory management efficiency and while this might be the most optimal, it is definitely NOT the most practical, you would need someone waiting for you to refuel to make it back to the staging line depending on how long you need to get back, and then top you off to the exact ammount of gas you need to go for another run.
I wont ignore you
. The amount of fuel that it would take for a person to get from the 1/4 mile stripe to the pit to refill the vehicle themselves is insignificant. these are the thousandths of seconds that your ET will vary from run to run. Also affected by, but not limited too, wind speed, air temp, humidity, barometric pressure, track temp, tire temp, coolant temp, oil temp, trans temp, gear oil temp, oil viscosity, lazy o2 sensors, inconsistent launch rpm, degree of wheel spin, looking at your tach, checking your opponent's position, worrying if you have too much fuel in the car, not landing straight, being a 1/2" outta the groove, that track food you just ate, and so on...once you get a handle on all of those items, then you can worry about regulating fuel level. on top of that, once you get fast enough, you'll start adding weight instead of taking it out.
back to the original topic, btw everyone that has posted gets better mpg than I do
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Joined: Jan 2006
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From: Philly
Yes, technically you're right, but most people don't run their car till it's empty, so that number doesn't really mean anything in the real world.
But okay, if we're going to be so literal, I'll change my wording. I get 275-310 miles per FILL UP. I generally fill up right around the time the light comes on.
But okay, if we're going to be so literal, I'll change my wording. I get 275-310 miles per FILL UP. I generally fill up right around the time the light comes on.
The only real-world way you can calculate your miles per tank is to do what I said. Otherwise, it's just when YOU fill up, not what your mileage per tank is.
There is no argument. You arguing against what I'm saying is like saying 2+2=10. It's just wrong.
You filling up every 275 miles means you don't know what your miles per tank is.