please tell me how much hiway driving or hi speed driving you guys are doing? cuz even after all these km/miles on my car, the gas economy is still much worst than what Acura says it should be. I do mostly city driving but the milage still really sucks! City driving is supposed to be 19mpg while highway is 29. I'm getting about 16.5 mpg in the city while i did a round trip from Toronto to buffalo and averaged exactly 24 mpg on the highway. I think that's just pretty crappy. I should mention I had the aircon on (just 1 click from the off position at normal room temperature).
My drivin style: almost nothing above 3000rpm, mainly 2 people in the car with me included, tire pressure:32-34psi
With gas so expensive these days, the gas costs is really a lot more than i expected when i first bought the car.

 

01 CL-S, with 21,000 miles.

Winter time, 18-20 MPG
Summer, Mixed City/HW 22-23 MPG
Longtrips, 26-28 MPG

Maybe once I got 30 MPG on a long trip.

 

Change your air filter to K&N or Comptech. That should increase 1 or 2 mpg if you drive the way you say you drive. Use SS to get into 5th gear asap. Don't brake unless you really have to (glide into turns). Hmmm... don't idle your car for more than half minute.

If price of gas is of a concern, you can always switch to regular. The ECU will adjust to the lower octane at the expense of a little performance, which in your case shouldn't really matter as indicated in your driving style.

 

*****.

Damn censors. What I meant to say was:


Pu$$y.

 

Really?

I could have sworn you meant to say:

I'm an idiot.

ROCK, through my first four tanks, I've averaged from just over 21 mpg to just over 25 mpg, with a fairly even mix of highway/city, and conservative/aggressive driving. Your mileage sounds abnormally low. I talked to another TL-S owner today who told me that with about 7000 miles on his car now, he was getting 31 mpg on the highway (btw, the officer who stopped him for 84 in a 45 was standing there while we were talking, so I don't think he's an overly conservative driver).

I'll be taking a 650 mile round trip in my car on Thursday. I'll report my mileage results.

 

Rock -

Sounds way low. I've got 2400 miles on my baby, and I've seen 23.5 mpg in mixed city / hwy allready (not highly conservative driving style by any means.) Call your dealer and ask for a diagnostic run. It's worth a shot.

Jim

 

I get really bad gas mileage . The best i got was 25mpg the worst was 15.8

 

1-2 mpg from an air filter? Hmmm. Mine must be defective...

Is your gas "reformulated" for low emissions or does it contain ethanol? That will lower gas mileage.

Have you checked the obvious - tire pressures, etc?

Most cars get less than the City estimate.

I do suburban driving, and get 24.8 - 25.1 MPG average, right between the City?Highway, so I cannot complain and think this is excellent for a car with this power and weight.

 

I'm averaging 25mpg which seems to be high based on what I read on this board. I have about a 75 mile round trip commute M-F for work of which around 65 is highway. I usually cruise at 80mph (depending on the traffic flow) which keeps the RPM around 2200 or so. I also noticed that I drive more aggressively when I use SS, so I've been using it less and just cruising. Usually I'm in rush hour each way anyway, so cruising is the only option.....

 

I have gotten 29-30 MPG on the high way, MA to MD and back. The trick is, keep your RPM consistant and close those damn windows.

 

Congrats! It's great not having radar detector wires strung out everywhere on the dash.

 

I usually get 285 Miles on a tank ~14 gallons = 20 miles a gallon, this isn't taking it real easy all the time, but I'm not constantly in the Vtec zone either. I have 6,000 miles on the car. My driving is all city. The few trips I have taken I have averaged well over 400 miles on a tank.

 

I have. during my first check up, I told them what I found. They said it was "normal" and that if this keeps up then i should call them. I did call them to do a check, but they claim everything came back as normal on the car.

I've also noticed that i get worst milage with the windows closed. Maybe it's becuz the aricon is on while windows are closed but it's not cranked up high at all.
My worst tank milage was 12.5mpg in the city. That was when we had a heat wave in Toronto and my aircon was set as low as it can go in temperature and the fan being high.

I dunno, this gas thing is sorta pissing me off becuz unlike most ppl here on this forum, my family really just managed to squeeze out enough money to buy this car. We totally didn't expect the gas to be as much as it is.

 

This may be irrelevant but what gas station do you purchase your gas from? I have noticed that different brands of gas will give me different gas mileage.

also, you might want to take the dead bodies out of your trunk, I told you to dump them already. That may be part of your problem.

 

I agree with the "abnormally low" statements. I average 20 around town and get over 30 on the highway. I have headers, K&N filter and run my tire pressure at 35 psi. I think I would get better around town if I didnt have my foot in it as much as I do......

 

ROCK,

Brand does really matter. In fact, I think that Canadian gasoline may be slightly not as good fuel economy-wise than our American counterparts. I'm not good with US measurements (1 mile = 1.6 km, 1 US gallon = 3.78 L, right?) but on average, I get 460 km (287.5 mi) per 50 L (13.2 gallon) of gasoline, using Shell Optimax Gold which works out to be:

287.5 / 13.2 = 21.8 mpg

That's prodominantly (90%) city driving. On one tank of Mobile Supreme gasoline I bought in Detroit, I went to Toronto via highway 401 and I went 600 km (375 mi) on 50L of gas and that works out to be 28.4 mpg. I hope my mixed city / highway driving is somewhere in between.

Tire pressure also matters -- I have mine inflated to 36 psi. 32 may help ride quality significantly but I find that adding a little more than 'recommended by the manufacturer' can only improve tread wear as well as fuel economy.

Like I said in a previous post: gasoline brand does matter. I personally like Shell. Esso provided similar mileage. Don't have any data for Petro Can, 7-Eleven, Canadian Tire or discount place. And one last warning: even within companies, some less scrupulous places will 'water down' their fuels so watch out for that. ... When something is too good to be true ... it probably is!

My $0.02.
- derrick

 

Indyjenks--"99 Chevy Explorer" (your sig) ? You gotta explain that one to me...

Tony

 

Just to let you know as well, this figure I stated earlier is in D4, with the windows down most of the time. I find D5 is really only usefull (for me) on extended highway trips. Drops the R's way to low for my tastes.

Try switching fuel brands as stated by others. Good gas is the key to good economy. I usually run Sunoco 94, or Shell 93.

Jim

 

\


If its a new car and is in your break in period the car will consume more gas until the breaking period is over and will reach if not exceed the expected MPG

 

LOL.....Explorer van Conversion company....high top conversion.

 

Okay, now I see...

Nice variety of rides, BTW!

Tony

 

I just got back from a Raleigh to Tucson to Raleigh trip yesterday. 4400 miles in 5 days.

What can I say, I was craving Mexican food.

Anyway, I averaged 32+ mpg's. Best was 36.5, worst was 28.6 (Best and worst were same stretch, opposite directions). I usually stuck with Exxon (93), Texaco (93) or Chevron (?) but ended up with Diamond Shamrock (91) and RaceTrack (91) a couple times without any noticeable decrease. Speed was between 75-85 almost the entire way. Granted, the terrain is pretty flat. We took the Deep South route (I-85,I-20,I-10).

Misc:
A/C on auto the whole way.
Tire PSI is 32 (cold).
Car runs Mobil 1 5W30 synthetic, which I changed again while in Tucson. Honda filter. No oil usage at all after 2200 miles.
No mods to car whatsoever.

As I've mentioned before my normal city mileage is about 21-22. Not too bad, but I don't live in an area with heavy stop and go traffic nor does my wife consistently nail the throttle.

 

There's just nothing funny about the thought of dead bodies anymore. Nothing funny at all...

 

This whole mileage thing is complete and utter bullsh!t. I'm getting about 18 mpg combined city and freeway and it totally sucks. I've had five acuras, the last four did fine, and this mileage issue is totally unacceptable.

 

No, I've passed the breakin period a while ago. Right now i'm at around 4500 miles.

I'd think so too about the American gas getting better fuel economy but that isn't the case at all. I know several ppl who have the reg TL (should be same fuel economy) and they state around 11Litres/100km (21.6mpg) on nothing but city driving.

I use shell optimax gold 91 (that's the best shell gas here). I've also tried sunoco ultra 94 for 2 tanks but didn't notice any difference.
HaHa :o)

 

Pressed submit reply by mistake...but anywayz.....
I'm beginnig to think that this gas problem is on very select cars. Here's the thing. The cars are made on the production line and the machines that make the cars and stuff are reset every x # of cars. So i'm thinking that my car was one of the last before the reset of the machines or whatever. Cuz this type of thing happened to my uncle's BMW. His BMW was the last of the production line before the new batch. He had fuel efficiency problems, heated problems, and many other small problems.

 

My mileage is closer to The Rock and Tea Elle. Almost all of my driving is city, and I get about 15 mpg. That's with either Mobil or Chevron, can't tell any diff. I checked it after driving out to the LA County Fair in Pomona and back, and with mostly highway driving I got around 23 mpg. I drive with the auto temp control on 95% of the time, and the car has about 3500 miles on it. The mileage is still worse than I expected.

 

Without doing a "test" on an uncongested stretch of highway, you will be wondering and wondering.

The reason I mention this is... From your general vicinity, I probably drive a similar cycle and get $hit mileage. My wife's Altima (which gets amazing gas mileage at 65 MPH on the freeway) only gets 14-15 MPG driving to her work. I get 16-17 MPG driving the same cycle as she does. Her car is a manual, mine is a CLS with sticky tires (not helpful for gas economy).

When I finally did some tests on the "open" road and filled up at the same exact pump, I got over 30 MPG at 70-85 MPH. I drove very "evenly" and tried to stay off the VTEC.

Some of the LA freeway and city cycles are brutal and in my opinion bring out the worst in gas mileage testing.

BTW – there still is that nasty issue of the pinging (yes/no)?

 

How does one drive "evenly" if one is driving anywhere between 70 to 85 mph?

Perhaps you coulda achieved even better gas mileage if you maintained a constant 70 mph...

FWIW I got 29 mph overall doing 30% rush hour, 50% typical freeway speeds, and 20% 80-90 mph driving, all on one entire tank of gas.

Gas mileage claims can be somewhat skewed based on what kind of driving is being done during the test; I'm sure it's not too difficult for most people on this board to get 30 mpg if they were to fill up the gas tank, then immediately drive a fair stretch of open highway at a constant 65 mph for a few hundred miles, then fill up again to determine the fuel economy.

Tony

 

I went from Westchester, NY to Princeton, NJ yesterday averaging 26 mpg. Keep in mind I have a mix of Highway and some City driving both were on the aggressive side. I think that's pretty damn good.

 

Since I've owned the car, ~3500 miles, I've consistently gotten 23 mpg driving to/from work (45 mph, and 7'ish stoplights). On a road trip to NW Colorado, through the mountains, I got 32 mpg (windows closed, AC on). Sportshift is used ~25%, but not much in the VTEC range.

I'd be pretty peturbed by 16/26 mpg city/hwy.

 

I'm a VTEC junkie and I get about 20mpg on a 80 mile round trip commute...about 60 of it is freeway and the rest is city. I hit between 70~100 on the way home..and in the City..it's about 40-60...I have a lead foot..
The only time I got that bad of gas mileage is when I had 2 other people in the car most of the time and living in the VTEC area with hard launches....and that was like 15mpg. I have gotten a high of 28 mpg on HWY.....from LA to SF.

 

The majority of my driving is city. However, even after a good mix of highway, I consider myself lucky to see 300 miles before the fuel light comes on.

 

Hmmm

I get 400km driving just city and 550km all highway (to Seattle)
That would equate to 250 miles for city and 343 miles all highway with the 1.6km/2 mile conversion.
I assume I would be getting 18.9 mpg city and 26.0 mpg all highway.
Isnt that low? All I have in K&N drop in filter and this would be driving moderate.

 

Using the climate control (A/C) gobs a chunk of fuel. I have made a number of 300 mile round trips to the same destination, each time except the last 2 were with the AC on. Average MPG was 24, and that is with an average speed of 70 mpg and no stopping. Without the AC I twice averaged 30 MPG. Bear in mind that the outside air was cooler as well, which eliminated the AC need, cooler air burns better, so that may also play a small part.

Another factor that may add to the increase is that I now use 5w-20 oil. I know that Acura will change oil with 5w-30 but does anyone know what weight oil the car came with from the factory ?

 

Useful definitions of evenly:

steadily: in an unchanging, regular, or rhythmical way
calmly and unemotionally: in a calm unemotional way

Evenly is not the same is unvarying -- give me a break. The whole point is to be smooth or even in the application of the throttle.

1. One can drive smoothly (AKA evenly) by driving between 70 and 85 mph. The ability to find an open road is problematic unless I go out at 2AM-4AM. So, it would make sense to do a driving test by not weaving in-and-out of traffic and being gently with throttle movements. If you know somewhere in the LA basin where you can maintain a constant 70 MPH (during daylight hours), I want to know about it.

2. If you are getting 29 MPH with the mix of driving you mentioned, you are doing very well. I'm sure the people that are not getting the same mileage, as you do, will want to take lessons or have you "adjust" their car for them...


Did IQs just drop suddenly, or did you miss the whole point of my comment? Tea Elle made the comment that his mileage was lousy, if someone wants to check to see if the car has a REAL problem in the engine, fuel management, or other systems, a test that would ASSURE a high mileage figure would be of great diagnostic help. This reminds me of my suggestion to try adding a few gallons of high octane to check on pinging as a "diagnostic" test to help the dealer figure out what is going on with a pinging issue...

BTW -- I have seen cases where pumps at the same station will click off at widely differing levels

 

EricL--Thank you for the lesson on the meaning of "evenly"; and BTW, my question to you regarding how does one drive "evenly" was meant to be rhetorical, not a knock on if you knew what "evenly" meant.

I for one don't know why Tea Elle is getting lousy gas mileage, and I can sympathize with him that the dealer isn't doing much to resolve the situation. I guess it's sorta frustrating to him to hear of others who are getting gas mileage in the high 20's while going 70-80 mph and/or with the A/C on.

As far as the pumps not clicking off consistently--my guess would be the amount of gas vapor in the fuel tank or perhaps a malfunctioning vapor recovery system on the gas pump itself.

Tony

P.S.: BTW, there's only one "i" in "stabbing"--unless you lifted that quote verbatim from someone else...

 

1. Thanks, I didn't even notice the repeated i -- it is fixed and it isn't ripped...

2. I've now had three different cars that would "click-off" at different levels depending on the brand and actual pump. How could one know? I noticed that certain pumps at my local Shell would allow different amounts of topping-off after a click-off. I no longer like to click-off any pump due to the E-codes that can result from overfilling a tank. So, fuel vapors, whatever, who knows what causes seemingly identical pumps to click off at different points. (I mention the use of the EXACT SAME PUMP for MPG testing purposes to allow for an accurate experiment -- if you're going to do a test, why not do it right [yes/no]?) Beyond the usual "tricks" of using the recovery pump to reclaim gas (as in rip-offs), pump nozzles are not all made to the same spec -- hence the need to use one and the same pump for a dead-on test.

Finally, if the car DOES get 30 MPH in 70-85MPH flow, then the particular urban cycle may have a rather large impact on gas mileage. If the car DOES NOT get 30 MPH in the conditions outlined previously, then the car needs a trip to the dealer ASAP.

You have actually made a point (indirectly). If there is enough room to misinterpret semantics regarding just my driving style, how can one person really know what another person's definition of congested, rush-hour, freeway driving, etc really is?

It is not as if there is some downloadable computer file that we can send to each other to precisely qualify the exact driving styles (along with TB opening, gas-flow-per-minute, vehicle speed, temp, etc). Finally, there is the issue of the short term and long term fuel trim values being set by the owner's PGM-F1 depending on driving style (and other conditions)!

When I originally thought I was getting "poor" gas mileage, I did what I explained above (long freeway ride == 30 MPG) and noticed that I could also get "great" gas mileage. As long as people are comparing apples to oranges, they will get a suitable comparison -- it is meaningless. At a minimum, all this data is producing extreme boundary values...

 

I've recorded my mileage from 19 fill-ups. 14 of my fill-ups were between 19MPG and 23MPG. My driving style is very aggressive. I usually run in the VTEC range on every takeoff. My last 3 tanks were all highway miles. I tried to keep a constant speed of 75-85 the whole way.

332.4 14.106 23.56444066
292.8 13.643 21.46155538
330.7 14.615 22.62743756
286.7 15.614 18.36172666
287 14.415 19.90981616
300.2 14.596 20.56727871
302 14.621 20.65522194
280.4 14.783 18.96773321
297.3 15.042 19.76465895
279.1 14.629 19.07854262
292 14.552 20.06597031
297.5 13.902 21.39979859
305.9 14.479 21.12714967
330.1 14.311 23.06617287
314.3 15.597 20.15131115
65.4 3.282 19.92687386
352.8 12.269 28.75539979
305.7 10.903 28.03815464
382.5 13.443 28.45347021

 

When driving on the highway we should use our cruise control as much as we can. AAA recomends using the cruise control for better fuel efficiency while drivng on the highway. The car will be at a constant speed.