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Acura TL Real World MPG

333 messages,  Last post on Nov 07, 2009 at 8:03 AM

You are in the Acura TL Forum. Your Hosts are pat & karens

What is this discussion about? Acura TL, Fuel Efficiency (MPG)


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#244 of 333
Re: Acuracy of TL average mileage [hicow] by hky
Dec 10, 2007 (9:28 pm)
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Replying to: hicow (Dec 10, 2007 6:14 pm)

The computer on mine is usually +-.5 mpg to the hand calculated value. I usually keep my tire pressure 33F, 35R and it seems to get slightly better mpg but it does affect ride quality a little.
#245 of 333
Re: Acuracy of TL average mileage [150mphclub] by kkrtrek
Dec 11, 2007 (11:01 am)
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Replying to: 150mphclub (Dec 10, 2007 7:49 am)

Thanks 150mph. By the way, here is how I calculate gallons used. Get a fill at a given (usually local) station, remembering your pump and position. Drive and refill as many times as you want--just keep track of the exact gallons each time you add gas. You can add any amount. When you want to calculate your mpg, go back to your local station, refill at the same pump and position, and be sure to stop at the same point as before, perhaps when the pump clicks off. Divide miles since the first fill up at that station and by total gallons. Voila.
 
The other potential error is the miles. I checked my odometer/tripometer a couple times, using the highway odometer checks, and it seemed almost exactly correct. Only other caveat is that my TL is just a couple months old and has 2500 miles on it. I expect mileage to improve a bit up to maybe 10,000 (?) miles.
#246 of 333
Re: First long trip mpg [kkrtrek] by mdcatdad
Dec 19, 2007 (7:58 pm)
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Replying to: kkrtrek (Dec 05, 2007 5:56 pm)

I'm looking forward to better MPG. I just drove my first interstate trip of any length
(only about 55 miles in each direction) and seem to be getting ~ 20 mpg in my 9-day-old '08 TL.
 
The salesman says that mileage gets better after each of the three oil changes.
 
At today's premium gas prices I have a reason to want my '08 TL to stop being so new.
#247 of 333
My mpg by sbtatter
Dec 31, 2007 (6:14 pm)
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I now have 6000 miles on my 07 type S. The avg mpg (US) in it's life time is 19.5. The best was a summer drive of 240 miles, flat avg speed 65 mph, got 30.7 mpg
The worst was a winter week of -31F, total of 227 miles, stop starts in town of 5 minute drives then stop for 2 hours, avg speed 25 mph, got 11.7 mpg
#248 of 333
2007 TL MPG by rickpoole
Jan 05, 2008 (2:32 pm)
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After two long trips from Texas to Florida I now have 13,000 miles on my 2007 TL. My overall average mileage is 22.0 mpg. About 5200 miles were highway miles at 75-80 mph. The rest is mainly stop and go driving around Dallas with some short highway trips. The average of the two trips to Florida was right at 28 mpg. The average for all the city driving between the two trips is 18.9 mpg. All mileages are computed by miles driven / gallons used. My trip computer also shows significantly higher mileage than computed mileage, in fact I've had my Acura dealer look at it each time it has been in for service. They keep saying it is just that inaccurate. Comparing it to a few friends cars (different makes and models) theirs all average only a few percent difference between indicated and computed mileage. Just glancing at mine it looks like it was sometimes as much as 20% to high. So, I started recording the reading when I fill up each time and the last discrepancies are: +17%, +10%, +14%, -5%, +7%, +15%, +21%, +19%, +8%. I reset the trip computer when I fill up and take the reading the next time I fill up. I expected a much more accurate reading than this, in fact, when test driving the car I asked the salesman twice if the mileage it was indicating was accurate and he assured me it was very accurate. During the three test drives I was getting an indicated 22-23 mpg during city driving and 31-32 on the highway at 65-70 mph. Based on my prior Acura, 1997 CL 3.0, that I was always able to get 3-4 mpg better than the EPA rating this seemed in reasonable. I've let my dealer know, in very strong words, that had I known the indicated reading were approximately 15% high it would have put the TL into 2nd place and I would have purchased a different make. The car goes in for service in about a month so I'm going to present them with this real data and ask for an explanation in writing why the trip computer is not only very inaccurate but also so inconsistent.
 
BTW - I'm also a pilot and our club used to have a plane with a fuel totalizer and the technology was very accurate for computing mpg - in fact it was usually accurate to within 1% based on GPS miles flown / gallons used.
#249 of 333
08 TL-S w/500 miles by chirocat
Jan 06, 2008 (2:08 am)
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I am 3/4 of the way through my second tank of gas on my new 08 TL-S 6M. I commute about 23 miles each way in the DFW area, with about 16 miles freeway at 80 mph ave and 8 miles or so side roads. I don't exactly drive slowly, to put it mildly but I am still averaging 24 mpg according to the computer and when this tank is filled I will see what the calculation is. Even if the computer is 10% over, it's still better mileage than any competitor I considered. Way better than the G35 and R32, and probably about the same as the Altima. My 98 Maxima averages 22 under the same driving, so given that the TL-S is 450 lbs heavier and has 100 hp more, 20 mpg would be impressive. Also of note, my friend gets a computer ave of 22 in his 06 TL 6M,and he drives nowhere near as hard as I do. I'll chime in again after I fill the tank this weekend.
#250 of 333
Re: 08 TL-S w/500 miles [chirocat] by kkrtrek
Jan 07, 2008 (6:55 pm)
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Replying to: chirocat (Jan 06, 2008 2:08 am)

chirocat,
 
Please do check in. I'll be curious to see if your computer is 8% or so too high. That would give you an actual figure of 22 MPG. Sounds like your driving isn't great for mileage. Thanks for the comparison to the competition.
#251 of 333
Re: 08 TL-S w/500 miles [kkrtrek] by chirocat
Jan 07, 2008 (9:44 pm)
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Replying to: kkrtrek (Jan 07, 2008 6:55 pm)

kkrtrek,
 
Just filled up today and I have confirmed your findings. My average was swaying between 23-24 on the computer and it calculated manually to just over 22 MPG. That's still slightly better than my 98 Maxima average, and I have less than 600 miles on the engine. Granted I would get better mileage if I drove less than an average 80 mph on the interstate and 10mph over the posted limited in town...plus didn't accelerate as briskly. But if I cared about mileage that much and could actually tolerate driving less than 75 mph (don't know how you guys can do it in a TL, let alone a TL-S) I would have bought something else.
 
I am still impressed that this car can get better mileage than my Maxima and weighs 450 more, and has 100 more HP. I am also happy that I have outscored Road and Track and the other magazine who got around 19-20 with the TL-S and 17 or so with the G35. I have 2 friends who drive like old ladies compared to me, one had a 03 G35X (he got 18 ave) and another friend with a 06 TL 6M who averages 22 on the trip computer. So I am really happy I am doing better than them, it also confirms that the TL-S was the right choice for me over the G35.
 
An interesting side note; on my first fill up the LOW FUEL warning went up on the way to the station, and I was able to cram no more than 13 gallons into the tank, the second fill up I drove to work and lunch after the warning and managed to just ladle in 13.9 Gallons. Clearly the low fuel warning is conservative. My Maxima gave me about 30 miles before it ran out when the car was newer, now it is practically dead in the water as soon as the light comes on. The tank is 18.5 gallons but you will be walking with 2 gallons left nowadays.
 
For the manual trans people, I have to wonder if shifting technique plays a roll in otherwise similar driving. Typically I use 4 gears out of 6 when accelerating in town, possibly that is why I am getting better mileage than my slower driving friend.
How do the rest of you guys normally drive? (shift points and gears)?
#252 of 333
Re: Acuracy of TL average mileage [kkrtrek] by superdavid
Jan 20, 2008 (3:25 pm)
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Replying to: kkrtrek (Dec 11, 2007 11:01 am)

This is exactly how you calculate the MPG. TL is not an economical car, if you want fuel efficiency, go with Corolla or Civic.
Just bought a Acura TL 05 certified pre-owned for 2 weeks. Using the car on board computer, I got 11 MPG from morning short trip (about 2 mi, driving the kids to school), up to 17 MPG local and up to 30 MPG strickly highway. And I am quite happy with the mileage. Remember, this is NYC traffic, you have to stop every 4-5 traffic lights, stop and go. Unlike some other folks lucky enough to live in suburb which local traffic means driving 30-40 MPH and stop once in a while.
#253 of 333
Re: Acuracy of TL average mileage [rich102] by bhulik
Jan 20, 2008 (5:39 pm)
Reply

Replying to: rich102 (Sep 09, 2007 6:28 pm)

I've got just over 8,000 on my 2007 TL-S 6M
 
Lifetime average is 24mpg. Highway I've gotten as high as 32 on long trips at a steady speed. Its the around town stuff that kills the mileage - Its too much fun winding it out before shifting.

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