Last post on Jul 14, 2012 at 12:02 PM
You are in the Acura TL
What is this discussion about?
Acura TL, Fuel Efficiency (MPG)
Jan 05, 2008 (2:32 pm)
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 365 08 TL-S w/500 miles
Jan 06, 2008 (2:08 am)
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 365 Re: 08 TL-S w/500 miles [chirocat]
Jan 07, 2008 (6:55 pm)
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 365 Re: 08 TL-S w/500 miles [kkrtrek]
Jan 07, 2008 (9:44 pm)
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 365 Re: Acuracy of TL average mileage [kkrtrek]
Jan 20, 2008 (3:25 pm)
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 365 Re: Acuracy of TL average mileage [rich102]
Jan 20, 2008 (5:39 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.
#254 of 365 Re: Acuracy of TL average mileage [superdavid]
Jan 20, 2008 (8:10 pm)
My computer's average is about 40mph and 24 mpg. The actual mileage average so far over my first 1200 miles has been just over 22. Considering that I accelerate much harder than average and cruise at 80 on the freeway leg of my commute, I am VERY happy with this mileage. The TL-S is commendably efficient considering it's performance level. I have a friend who drives conservative compared to me and managed an average of 18 with his 04 G35X. Considering the the 08 TL-S rivals that car and is just behind the new G35..... I can't say anything negative about the TL-S mileage.
#255 of 365 Re: Acuracy of TL average mileage [chirocat]
Jan 21, 2008 (5:44 am)
Remember though that the G35x is an all wheel drive vehicle and gas mileage will suffer as compared to the FWD TL. It will be interesting to see where the '09 TL's MPG falls with SH-AWD.
#256 of 365 Re: Acuracy of TL average mileage [upstatedoc]
Jan 24, 2008 (11:37 pm)
The G35X needs to be judged relative to the G35, which seems to get the same or less MPG then my conservative driving friend. I would say the AWD costs the G35X maybe 1 mpg. It just can't compete with the TL-S, (the G35 6MT), they weigh the same, same size engines, similar HP but the gear ratio is pretty low on the G35 and it eats the gas. At least for my driving, which is about 80 mph for the bulk of my commute, the Acura can not be beat. It just quietly idles along at 2750 RPM, where my old Maxima was doing 3300. The G35 is only slightly better than my old Maxima as far as RPM goes.
#257 of 365 TL decent MPG performer
Mar 22, 2008 (8:05 pm)
I have owned several 3G TL cars, most recently an 08 TL-S. My 07 TL over about 11K miles averaged 22.4 MPG while my Type-S over 8,100 miles averaged 21.8 MPG. Most of my driving is my commute in suburban ATL 20 miles each way averaging 25-29 MPH. I'm thinking of a G35, be scared of all those saying they get 18MPG or less!