I now have a decent amount of history. Here are the results:

Average fuel economy: 10.0 L/100km (23.5 MPG*) [rough guess is 75% city; this is for 9537km, consuming 955.5L]

Worst fuel economy: 13.5 L/100km (17.4 MPG) [Cold weather, 100% city, and cheap Safeway gas (though I don't know if that had any effect)]

Best fuel economy: 8.2 L/100km (28.5 MPG) [only 5% city, cruising 130km/h (80mph) most of the way]

* All MPG figures are statute miles per US gallon, converted by dividing 235.2146 by L/100km.

These are all calculated with a spreadsheet, not by the vehicle.

These figures, incidentally, are in the ballpark of what both the US and Canadian governments estimated for the vehicle, so that's nice. (Some say, "oh, don't expect to get the mileage that the government estimates," but I'm close.)

Original Government Fuel Economy Ratings for TSX
Original rated economy* (city L/100km, MPG) 11.0, 21.4
Original rated economy* (Hwy L/100km, MPG) 7.3, 32.2
* From Natural Resources Canada at http://vehicles.gc.ca/, and the 2005 TSX Brochure. Estimates on acura.ca are 10.7/8.1.

Original rated economy** (city L/100km, MPG) 11.2, 21
Original rated economy** (Hwy L/100km, MPG) 7.8, 30
** From US Department of Energy at http://www.fueleconomy.gov/

 

I've been tracking since I bought the car new in June 2005. It is used almost entirely as a commuter car and grocery getter, there haven't been any road trips.

In that time, I've driven 8,684 miles and used 353.14 gallons of gas for an average of 24.59 MPG. My best tank was 27.86 MPG and the worst was 22.73MPG.

 

My summaries for the past few years:
2003
Miles 4602.3
Gallons 191.576
Spent $326.29
Avg MPG 23.953

2004
Miles 13178.3
Gallons 526.652
Spent $1,046.71
Avg MPG 24.848

2005
Miles 10045.3
Gallons 406.815
Spent $1,030.95
Avg MPG 24.684


If I would've filled with mid grade in 2005, I would've saved $40.68
And if I would've filled with lowest grade in 2005, I would've saved $81.36
WOOPEEDOO!! (just to put things into perspective for those who complain about having to fill up with premium...you're not saving much)

 

Oh Sauceman, great champion of gas mileage you will be proud of this fellow Quebecois...

My wife took our TSX to Quebec City this week: 650 KM at 108 KmH: 6.5 L/100 Km

Not bad for a little 200Hp engine. Anxious to see what it will do when broken in. Only 3500 Km on it now

 

I have one here not a years worth of data yet

Later

 

One thing that isn't shown in this thread is the Winter mix of gas gives less MPG than the summer mix. So if you live in the colder regions you will see a slight drop. Some people see no drop though as the colder more dense air counteracts the winter mix of fuel and everything equals out.
Wonder if anyone can pull out the winter months (October through April) and see what happens to their MPG.

 

I don't think that would be an "apples to apples" comparison; you must factor in such things as snow tires, colder start up temperatures, driving in snow & taking 15 minutes to get that 1/2 inch of ice off the windows when the car is frosted with freezing rain.

My

 

Actually, I believe the denser air results in more fuel consumption (but more power too).

 

can you graph the data and x-ref it with $/Gal. r u an acct or something?

 

36MPG suckas!!!

 

My fuel economy has slowly risen over time during break-in. Now I'm in the upper-mid 20s generally with a 20 mile freeway ride to work and some city driving mixed in. If I get stuck in traffic or stay in town a lot, the mileage will drop to about 25 or so.

I've noticed the Average Fuel Economy display in the instrument cluster is pretty optimistic--generally reading 2-3 mpg higher than what it really is. I've seen mine ride at 33.1 for a while initially, dropping to 29.x by the time I filled up. The actual calculated fuel economy turned out to be 26.9, so...

 

I average probably between 27 and 28 for mixed driving. My wife gets 30-32 on her longer commutes. We're at about 10k miles on an 06 MT. It hasn't really changed much since the first oil change.

On a side note, I was getting 48 mpg dropping out of the Black Hills back towards Minnesota. This was only over about 45 miles or so, but it was fun to see the MPG keep getting higher and higher. Kind of like driving a hybrid for an hour.

 

I have just over 4k miles and my driving habits are either all city or all highway and very little mixed. I am currently getting 15 in the city and about 29 on the highway. I am pleased with the highway mileage, but city is .

 

are you guys only looking at the MID or you are actually calculating it yourself?

I find the MID isn't really accurate

 

I've also found the MID inaccurate, but it is precise. I've always seen between a 1.5 and 2.0 mpg difference between displayed and actual, with the MID being optimistic. I've done this 4 or 5 times and it seems consistent, so now I just subtract the difference.

 

how do you guys drive 300+ miles on a tank? for 14.5 gallons, i always go 280 miles

 

^I usually go around 300-350 miles on a tank. Personal best was 520-530 miles. One full tank from Vegas to San Francisco cruising at 70-80 mph with A/C on... Now, I need to sign in on that 500 mile club thread...

 

how about on the streets?

 

Just city driving, I average around 23-24 mpg. With mixed freeway and city, around 29-30 mpg..

 

 

Impressive!

 

I recently took a trip to Ottawa ON Canada.. from PE canada.. and I was averaging around 40 mpg... (remember we use imperial gallons here in Canada.. I was quite impressed. that was averaging 75-80 miles per hour..the best prior to that was around 27-28 mpg..

 

http://www.google.com/search?hl=en&q...r+gallon&meta=

 

i believe this is an important question to ask too...

which octane were you all using when compiling the stats?

good info though.

 

Last year I compared octane performance on fuel econonmy, and it turned out that 91 was yielding 6% better fuel economy than 87.

 

city 24 / highway 27 for me

 

thanks... Im trying to figure out than, if the car runs fine on 87, wouldn't it be worth it (savings wise) to get 87 gas rather than 91 despite the slight decrese in fuel economy.

 

If the fuel economy is 6% better with 91 octane then it would only make sense if 87 octane was 6% cheaper than 91 octane. In my neck of the woods, 91 = $3.39/gal, 87 = $3.19/gal, so the savings is .20/3.39=5.9%, i.e a wash. All things being equal why not just follow the manual? Even with gas less expensive than in SoCal the $$ savings are not that much.

 

Highest MPG = 33.5 (Driving from Colorado to CA). City MPG = 24.5.
Do you guys fill up ur tank when the light comes on. Coz, it only take about 13-14 gallons, but the tank is 17, so should i wait till about 90-100 miles after the light comes on or wat?

 

I usually go another 75-100 mi. from when the light comes on. Still, I've never put more than 15.8 gallons in. I figure that still leaves me about a 30-40 mi. cushion.

 

Pure City MPH = 15. Sucks....'06 MT and I never rev above 4k. 3,000 miles so far. If I throw in some highway driving, I get 18 or so.

 

My second 10k miles stats :
Overall average -- 30.3 MPG
First standard devia. - 1.3 MPG
Max. -- 32.1 MPG
Min. -- 27.4 MPG
Distan. -- 9749 miles
Total gasoline -- 321.9 gallons
Gas used -- 91 from either Shell or Chev

 

See my posts in
https://acurazine.com/forums/showthr...t=32310&page=3

Sure, you might save $65 to $110 for every 10k miles by using regular gas, but you can achieve the same saving by going easy on the accelerator.

 

This tank: 28.2mpg
Over the life of the car so far: 29.6mpg
3500 miles so far.

 

Definetly see your point...its worth it for the $65 a year...

 

And what would be the wisdom of waiting, other than to see how far you can really go? Besides the obvious inconvenience of running out of gas, I've also read that running it dry can cause the car some harm: The manual says something about it harming the catalytic converter (not sure if that was it; I haven't read it in a while, and I'm not sure why that would be), and I've also heard that since the fuel pump relies on being immersed in fuel for cooling, you'll get longer life out of the fuel pump by not letting the tank get too empty.

All that said, I'm tempted to go around with a can of fuel in the trunk once, just to see how much of the 65 litre capacity is actually usable, and how much fuel seems to be left when the needle is on E (which is some time after the light goes on in this car). I don't know if I'll ever do it, for the reasons stated above, and because I'm not sure how safe it is to drive around with a can of gasoline in the trunk. But I'm tempted.

 

I know you qualified your question by saying "savings wise", but I can't help pointing out that a large part of the attraction of cars like the TSX is the high compression engine. That part does not "run fine" on 87. When running on 87, the car has to retard the timing to prevent (or limit) knock. I'd rather (a) not steal power from the engine like that, nor (b) trust the anti-knock sensor to do its job in preventing engine damage. So I always buy 91 (or 92-94 in the rare cases 91 is not available).

 

It's all

You won't do any harm by running your car dry.

 

98 Octane..Damn thats High. I can only find 93 octane around atlanta georgia...


Alan