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Acura TL Real World MPG

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  • Just back from a 2193 mile trip in a new 08 TL NAV base model. The on-board computer indicated 29, 30 and even 31 MPG for the entire trip. Actual MPG for the trip was 26.8, about 8% less than the 00 TL just 3 months ago(less HP).
    Miles on the car when we left was 876. Speeds were above the norm. Ran like a charm though. Did the return trip all in one day.
  • I've had my '08 TL Type-S for a month now. On just highway driving around 75 MPH I get about 30-31 MPG. In a mix of highway & city driving I get about 26-27 MPG. With mostly city driving I get about 24 MPG. If I drive aggressively and mostly city driving I get a MPG in the low 20s. My last car was an RSX Type-S and the MPG didn't seem to jump around as much. The RSX was only a 4 cylinder though.
  • Have a 2008 TL, over the last year my actual mileage has averaged 28 highway and 21 city.
  • The yellow fuel low warning light came on and then I started watching "range/miles" left to empty. I thought I was excruciatingly close to running out of gas (10 miles to empty) when I pulled into the gas station.

    I filled up the tank and it only took 14 gallons! Owners manual says 17 or so total and this obviously would mean you would have a LOT more range left than indicated on the computer (at least 60 miles by my driving habits).

    Does anybody know if the range indication has issues with accuracy? Is it "pessimistic" to keep the motorist out of trouble (stranded) and have a dumb factor built in or is it really accurate? Any techies know anything about it? It's an 06 TL and I always reset the trip computer at fill-ups.

    Thanks....
  • laurasdadalaurasdada Posts: 2,590
    '05 TL, same deal. I learned early on that the low fuel warning light comes on, well, early on... Better safe than walking...

    '13 Jaguar XF, '11 BMW 535xi, '02 Lexus RX300

  • The most explanation I've gotten is the computation is mostly based on manifold pressure. Seems like it would take a minor software update to make it much more accurate. But, I wonder how many sales they would have lost if it was accurate. I test drove the 07 TL three times in different traffic, different speeds, and different driving styles. Driving normally to conservatively resulted in a reading of 21-24 mpg and driving aggressively resulted in only 18 mpg . Given the inaccuracy it meant it really got 19-22 and 16. Given my requirement was no less than 20 mpg city it would have put the purchase in jeopardy unless the final price was lower to compensate for the lower mileage.
  • aaarghaaargh Posts: 230
    Yes, it is very pessimistic. You do not want to foul the injectors with crud, so they want you to fill up well before empty.

    This is the case for my '04 and I believe for every TL through '08.
  • "You do not want to foul the injectors with crud"

    Well.... I guess that's why my mechanic says "NEVER EVER run out of fuel with a fuel injected car!!!! Thanks for the answer, I've pretty much concluded that there is range left when the computer is showing 10 or so miles. I'm not in the routine of getting that close anyway but it's nice to know in case of an emergency...
  • keithlkeithl Posts: 106
    I have 2008 Type-S and over 12K miles am averaging 22.4, I had another 2008 Type-S before this one and avergaed 21.5 on that one. The differecne I think is the gas I use now. I used to use Chevron and Shell, great gas but I suspect numerous mom & pop statiosn are not real honest with calibrating their pumps. IOn this Type-S I use exclusevliy Quik Trip Premium and see better MPG all around. I have doen more HWY on this car, but tank by tank I still see at least .5 MPG better on Quick Trip. My 07 BAse TL with NAV over 11K miles averaged 22.5 MPG as well. I also only use Mobil1 5W20 Synthtic in my cars.
  • Hi, I have an 08 TL with approx 2000 miles on it. I mostly drive in the city on roads where the average speed limit is about 40-45 mph. My trip computer shows 15 mpg - today I was observing the range and it dropped by about 20 miles when infact I had driven just about 11 miles. I am not an aggressive driver however most of my trips are short - I drive on an avg 15 miles/day.
    Should the fact I mostly drive on city roads for short trips bring down my mileage so much?
  • keithlkeithl Posts: 106
    Short trips are killers plan and simple, the car takes a few miles to warm up and until then the MPG is going to be off. In winter the warm up time is longer as the temp is colder. I drive 18 miles to work and at average back roads speed of 40-45 MPH with lights I get 24-25MPG on way to work as there is no traffic, same trip home with traffic I am lucky if I get 20-21MPG and the trip home takes 15 minutes longer due to traffic. Short trips of a few miles and I get horrible MPG. The GF has a CRV, gets 23 MPG on decent 18 mile commute for me, her commute is 6-7 miles and more traffic and she gets 19 MPG, car is warming up half the trip and then the traffic kills it.
  • rvator4rvator4 Posts: 84
    Just back from a 2338 mile trip in our 08 TL 3.2. Got 27.6 MPG.
    Same trip in November we got 26.8.
    First trip when we left had just 870 or so miles. This trip started with 3534 miles on car. Maybe it will continue to get better. Has a long way to go to match same trips in 00 3.2 TL where we got right at 30 MPG.
    Speed was very fast as usual.
    Before leaving I installed 3M clear protective covering myself and it worked great.
  • laurasdadalaurasdada Posts: 2,590
    Hello: Quick ski trip to New Hampster for my birthday in my '05 TL Auto:

    Miles: 389
    Avg. Speed: 48mph
    Avg. MPG: 28+

    Per the OBC.

    Skiing was great!

    '13 Jaguar XF, '11 BMW 535xi, '02 Lexus RX300

  • Does have any 2009 numbers for the newest generation TL?
  • neimanneiman Posts: 6
    I have a 2009 TL w/Tech with about 3100 miles. Per the trip computer I have gotten 23.2 mpg over the 3100 miles. I would say you should expect 25-26 on strictly highway driving and 21-22 for city driving.
  • how fast do you usually go? I try to go around 65 MPH to get the maximum gas mileage.
  • markcpmarkcp Posts: 11
    Just returned from a 400 mile round trip on two lane highways. Used cruise most of the trip set at 61. OBC totaled 32.5 mpg when I pulled home into the garage with our 09 TL with tech. Very happy with it after 6000 miles.
  • rickpoolerickpoole Posts: 27
    I had a 2009 TL w/tech for over a week while my 2007 TL was in the shop. Most of the driving was the same city driving I do in my 2007 TL and the computed mileage (miles driven / gallons used) was actually lower than my TL (18 versus 20). All the city driving was conservative - gentle acceleration, letting the car slow down normally versus maintaining speed up to red lights, etc. I expected slightly better mileage from the 2009 since they are both rated at 18 city but the 2007 rating were about 10-20% high and the 2009 ratings are supposed to be much closer to actual driving. I only got to drive about 60 highway miles and it averaged about 2 mpg less than my 2007 TL (26 versus 28). Mileage computer always showed about 10% higher than actual (which is about the same as my 2007 TL). The one thing I could never get a clear answer to was whether the dealer's loaner cars were filled with regular or premium. Based on how much acceleration the 2009 TL had I'd be surprised if it was filled with regular (my 2007 TL shows a noticeable drop in acceleration if filled with regular). Since I didn't get to refill it from near empty I also didn't get to test whether a complete ECU reset like I do on my 2007 TL every few fillups helps improve the mileage.
  • markcpmarkcp Posts: 11
    To verify the OBC on this trip, I check actual miles to actual gas at fill up. Came in a 33 mpg. My wife has been getting around 25 mpg with mix of small city and highway.
  • smarty666smarty666 Posts: 1,503
    I drive a base 2008 TL and am getting about 24mpg city and about 27-28 mpg on the highway; I consider these excellent numbers for a luxury sports sedan like the TL; the only other luxury sedan that gets good numbers like this is the ES350 buts thats not a sports sedan; infiniti, BMW, or audi doesn't get numbers like this!!!
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