'06 TL poor mpg
#1
Advanced
Thread Starter
'06 TL poor mpg
i saw some threads on poor mpg about tls tsx and mdx. i figure i should be getting around the same mpg as the tls but i just want feedback from base auto tl owners to get the closest numbers.
so i got a 06 base a/t tl with almost 42k. for the past 3 months or so i have been getting really shitty city milage. i avg about 25/26 highway so im okay with that but im averaging about 13/14 mpg city. i know short trips and stop/go at redlights/stop signs hurt your mpg but 13/14 seems a little too low. i only use my car to go to school and back which is about 6 miles a day just local no highway at all. i tried driving with a light foot and braking early for 2 full tanks and i only get 200 plus/minus 10 miles a tank. i dont have a cai or aftermarket exhaust. i dont keep anything heavy in the car. only things extra is aspec front and rear lip. my stock tires with 10k miles left with psi kept at 35/36.
any reason why my city mpg is so shitty? any tips to improve it? gas at state college is 3.89 for premium and im thinking about not driving at all if if my mpg doesnt improve and gas continues to rise.
so i got a 06 base a/t tl with almost 42k. for the past 3 months or so i have been getting really shitty city milage. i avg about 25/26 highway so im okay with that but im averaging about 13/14 mpg city. i know short trips and stop/go at redlights/stop signs hurt your mpg but 13/14 seems a little too low. i only use my car to go to school and back which is about 6 miles a day just local no highway at all. i tried driving with a light foot and braking early for 2 full tanks and i only get 200 plus/minus 10 miles a tank. i dont have a cai or aftermarket exhaust. i dont keep anything heavy in the car. only things extra is aspec front and rear lip. my stock tires with 10k miles left with psi kept at 35/36.
any reason why my city mpg is so shitty? any tips to improve it? gas at state college is 3.89 for premium and im thinking about not driving at all if if my mpg doesnt improve and gas continues to rise.
#2
Suzuka Master
iTrader: (1)
6 miles on a cold engine certainly isn't the optimum driving range for the best fuel mileage, and it shows. The EPA has 18 city, but that is a combination city/highway and derived from an engine up to temp. The next few fill-ups, log the mileage and gallons used and with the warmer weather the mileage will rise.
#3
Advanced
Thread Starter
would it help to wait for the engine to warm up before driving? i read somewhere 10 seconds is enough wait time before driving. anymore time would just be wasting gas. i am getting a CAI soon how much mpg improvement should i see with that?
#6
Racer
i saw some threads on poor mpg about tls tsx and mdx. i figure i should be getting around the same mpg as the tls but i just want feedback from base auto tl owners to get the closest numbers.
so i got a 06 base a/t tl with almost 42k. for the past 3 months or so i have been getting really shitty city milage. i avg about 25/26 highway so im okay with that but im averaging about 13/14 mpg city. i know short trips and stop/go at redlights/stop signs hurt your mpg but 13/14 seems a little too low. i only use my car to go to school and back which is about 6 miles a day just local no highway at all. i tried driving with a light foot and braking early for 2 full tanks and i only get 200 plus/minus 10 miles a tank. i dont have a cai or aftermarket exhaust. i dont keep anything heavy in the car. only things extra is aspec front and rear lip. my stock tires with 10k miles left with psi kept at 35/36.
any reason why my city mpg is so shitty? any tips to improve it? gas at state college is 3.89 for premium and im thinking about not driving at all if if my mpg doesnt improve and gas continues to rise.
so i got a 06 base a/t tl with almost 42k. for the past 3 months or so i have been getting really shitty city milage. i avg about 25/26 highway so im okay with that but im averaging about 13/14 mpg city. i know short trips and stop/go at redlights/stop signs hurt your mpg but 13/14 seems a little too low. i only use my car to go to school and back which is about 6 miles a day just local no highway at all. i tried driving with a light foot and braking early for 2 full tanks and i only get 200 plus/minus 10 miles a tank. i dont have a cai or aftermarket exhaust. i dont keep anything heavy in the car. only things extra is aspec front and rear lip. my stock tires with 10k miles left with psi kept at 35/36.
any reason why my city mpg is so shitty? any tips to improve it? gas at state college is 3.89 for premium and im thinking about not driving at all if if my mpg doesnt improve and gas continues to rise.
Combined I get 17-19 mpg. I thought maybe there is something wrong with my engine/transmission/tires/driving style.. but I guess not.
I guess I just have to suck it up. I've been trying to drive less nowadays since gas prices has surpassed $4/gal.
![ugh](https://acurazine.com/forums/images/smilies/ugh.gif)
#7
Cruisin'
Join Date: Mar 2011
Location: Minneapolis
Age: 42
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Have you checked your spark plugs and/or your air filter? I know that is not a lot of miles on your car, but one way or another, you are burning more gas than you should be. Do you ever feel like the car just doesn't have a lot of power if you ever punch the accelerator?
I have an '07 type s that I drive like I stole and I live in MN. I average about 23 mpg, with about 60 city/40 hwy split...this includes my fast acceleration and need for speed. I would suggest getting it checked out as my car should get a tiny bit worse gas mileage than yours.
Let me know what you find out on this as I am interested to know.
I have an '07 type s that I drive like I stole and I live in MN. I average about 23 mpg, with about 60 city/40 hwy split...this includes my fast acceleration and need for speed. I would suggest getting it checked out as my car should get a tiny bit worse gas mileage than yours.
Let me know what you find out on this as I am interested to know.
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#9
I dissagree with this!
There are very big numbers for fuel economy in just the right clean air filter,and if you have old crappy sparkplugs you may not have any misfire.But you will not be at the peak of clean power.Their in you will get BAD fuel economey.
#10
Cruisin'
Join Date: Mar 2011
Location: Minneapolis
Age: 42
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Thanks Acuraman101...That is what i was trying to get at. I know spark plugs don't make a huge difference, and the air intake won't do a tone, but getting new plugs in if the old ones are bad and changing out the air filter could easily boost mpg by 3-5 miles/gal.
#15
Mr. Detail
6 miles each way in the cold is what is killing your mileage. Engine probably isn't warmed up until at least halfway to your destination. Letting your car sit and idle until warm won't help either, it warms up faster when you actually drive it.
Making sure your plugs and air filter are good will help maximize your mileage, also check the air pressure in the tires. If it was warm last time it was done, they might be down several pounds now that it is cold.
Making sure your plugs and air filter are good will help maximize your mileage, also check the air pressure in the tires. If it was warm last time it was done, they might be down several pounds now that it is cold.
#19
Moderator
iTrader: (1)
^okay, sir.
With the plugged air filter, airflow is reduced so fuel is also reduced by a proportionate amount. The net result is a loss of power but not mileage.
I see what you're saying about WOT but it doesn't just dump all the available fuel. Most older FI cars base WOT fueling on the long term fuel trims. So if the filter has been plugged for a while, even WOT fueling will be proportionate. Newer cars like the TL stay in closed loop at WOT.
On top of that, there will be more manifold vacuum at WOT with a plugged filter so the computer sees this as a decrease in airflow and adjusts accordingly.
I see what you're saying about WOT but it doesn't just dump all the available fuel. Most older FI cars base WOT fueling on the long term fuel trims. So if the filter has been plugged for a while, even WOT fueling will be proportionate. Newer cars like the TL stay in closed loop at WOT.
On top of that, there will be more manifold vacuum at WOT with a plugged filter so the computer sees this as a decrease in airflow and adjusts accordingly.
Last edited by justnspace; 12-27-2011 at 04:46 PM. Reason: added a little proof. can get more if needed
#22
Intermediate
With reduced performance comes reduced fuel mileage.![Tomato](https://acurazine.com/forums/images/smilies/tomato.gif)
Less power, more work. Kinda like BMW M# vs Toyota Prius on Top Gear. BMW M# got better mileage than the Prius. Less power, more work. Yes, the car will adjust AF ratios to adapt to a dirty filter but that will reduce power which in turn reduces mileage.
![Tomato](https://acurazine.com/forums/images/smilies/tomato.gif)
Less power, more work. Kinda like BMW M# vs Toyota Prius on Top Gear. BMW M# got better mileage than the Prius. Less power, more work. Yes, the car will adjust AF ratios to adapt to a dirty filter but that will reduce power which in turn reduces mileage.
#24
Intermediate
^ what ever you say boy o.. there is a point at which a dirty filter hurts mileage. Let me make myself a little clearer because I fear that I may be getting misunderstood. The dirty air filter is compensated for by the fuel injection system and has little effect on mileage. Yes, I agree with this. The issue is poor fuel mileage caused by the driver's right foot when faced with a reduction of performance caused by a dirty air filter. So, does a dirty air filter directly cause poor mileage??
. Does a dirty air filter indirectly cause poor mileage??
. All I can say is that a lab will prove over and over that the dirty filter does not effect mileage but it won't replicate real world driving. When my filter gets black and plugged and I replace it I always get a bump in mileage.
![No](https://acurazine.com/forums/images/smilies/no.gif)
![Yes](https://acurazine.com/forums/images/smilies/yes.gif)
#26
Suzuka Master
iTrader: (1)
^ what ever you say boy o.. there is a point at which a dirty filter hurts mileage. Let me make myself a little clearer because I fear that I may be getting misunderstood. The dirty air filter is compensated for by the fuel injection system and has little effect on mileage. Yes, I agree with this. The issue is poor fuel mileage caused by the driver's right foot when faced with a reduction of performance caused by a dirty air filter. So, does a dirty air filter directly cause poor mileage??
. Does a dirty air filter indirectly cause poor mileage??
. All I can say is that a lab will prove over and over that the dirty filter does not effect mileage but it won't replicate real world driving. When my filter gets black and plugged and I replace it I always get a bump in mileage.
![No](https://acurazine.com/forums/images/smilies/no.gif)
![Yes](https://acurazine.com/forums/images/smilies/yes.gif)
"NEW INFORMATION: Replacing a Clogged Air Filter on Modern Cars Improves Performance but Not MPG
A new study shows that replacing a clogged air filter on cars with fuel-injected, computer-controlled gasoline engines does not improve fuel economy but it can improve acceleration time by around 6 to 11 percent. This kind of engine is prevalent on most gasoline cars manufactured from the early 1980s onward.
Tests suggest that replacing a clogged air filter on an older car with a carbureted engine may improve fuel economy 2 to 6 percent under normal replacement conditions or up to 14 percent if the filter is so clogged that it significantly affects drivability".
As we know, the A/F ratio is maintained by the ecu thru the feedback system, so no matter what you do with your right foot it won't dump uncontrolled fuel into the cylinders, no air no more fuel. You may try to get more fuel in by depressing the accelerator, but the electronics will still control the mixture, less air, less fuel, therefore poor acceleration but no difference in fuel mileage.
#27
From the EPA site:
"NEW INFORMATION: Replacing a Clogged Air Filter on Modern Cars Improves Performance but Not MPG
A new study shows that replacing a clogged air filter on cars with fuel-injected, computer-controlled gasoline engines does not improve fuel economy but it can improve acceleration time by around 6 to 11 percent. This kind of engine is prevalent on most gasoline cars manufactured from the early 1980s onward.
Tests suggest that replacing a clogged air filter on an older car with a carbureted engine may improve fuel economy 2 to 6 percent under normal replacement conditions or up to 14 percent if the filter is so clogged that it significantly affects drivability".
As we know, the A/F ratio is maintained by the ecu thru the feedback system, so no matter what you do with your right foot it won't dump uncontrolled fuel into the cylinders, no air no more fuel. You may try to get more fuel in by depressing the accelerator, but the electronics will still control the mixture, less air, less fuel, therefore poor acceleration but no difference in fuel mileage.
"NEW INFORMATION: Replacing a Clogged Air Filter on Modern Cars Improves Performance but Not MPG
A new study shows that replacing a clogged air filter on cars with fuel-injected, computer-controlled gasoline engines does not improve fuel economy but it can improve acceleration time by around 6 to 11 percent. This kind of engine is prevalent on most gasoline cars manufactured from the early 1980s onward.
Tests suggest that replacing a clogged air filter on an older car with a carbureted engine may improve fuel economy 2 to 6 percent under normal replacement conditions or up to 14 percent if the filter is so clogged that it significantly affects drivability".
As we know, the A/F ratio is maintained by the ecu thru the feedback system, so no matter what you do with your right foot it won't dump uncontrolled fuel into the cylinders, no air no more fuel. You may try to get more fuel in by depressing the accelerator, but the electronics will still control the mixture, less air, less fuel, therefore poor acceleration but no difference in fuel mileage.
I agree..i think these 3.5L motor are just gas sucking turds!
I had a 03 Grand am 3.4 gt it got 23.5 mpg city all day long and had more Zip then the TL S I currently own! The S is getting 200 on a tank and my old 3.2 04 Tl got 300-320 easy in city!. Also, I think my 04 had more power!
#29
Suzuka Master
iTrader: (1)
I agree..i think these 3.5L motor are just gas sucking turds!
I had a 03 Grand am 3.4 gt it got 23.5 mpg city all day long and had more Zip then the TL S I currently own! The S is getting 200 on a tank and my old 3.2 04 Tl got 300-320 easy in city!. Also, I think my 04 had more power!
I had a 03 Grand am 3.4 gt it got 23.5 mpg city all day long and had more Zip then the TL S I currently own! The S is getting 200 on a tank and my old 3.2 04 Tl got 300-320 easy in city!. Also, I think my 04 had more power!
Well, here's the fuel mileage comparisons, assuming all A/T:
'07 TLS 17 city 26 hwy
'04 TL 18 city 26 hwy
'03 G.A. 18 city 27 hwy
Let's be realistic, if you saw 23.5 on the V-6 Grand Am all day long in city driving it must have been an early hybrid and if the 175hp powerhouse in the Pontiac gave you more acceleration than the TLS, then maybe the Acura is running on 4 cyl. The 8 sec 0-60 time is a far from the TL let alone a TLS. Guess you should have kept the Grand Am.
#30
Intermediate
Not one bit. I stand by what I said. You guys are all reading articles on the internet that comment on tests performed in lab studies. When a driver feels a lack of performance they will tend to drive the car harder which will cause the poor fuel mileage. So, going back to what I said earlier>>>Does a dirty filter DIRECTLY effect mileage?? No.. Does a dirty filter INDIRECTLY effect mileage?? YES because of the reduction in performance which ultimately results in the driver driving the car harder than normal.
#31
Intermediate
Got to love these fuel mileage threads! I get sucked in all the time.
Well, here's the fuel mileage comparisons, assuming all A/T:
'07 TLS 17 city 26 hwy
'04 TL 18 city 26 hwy
'03 G.A. 18 city 27 hwy
Let's be realistic, if you saw 23.5 on the V-6 Grand Am all day long in city driving it must have been an early hybrid and if the 175hp powerhouse in the Pontiac gave you more acceleration than the TLS, then maybe the Acura is running on 4 cyl. The 8 sec 0-60 time is a far from the TL let alone a TLS. Guess you should have kept the Grand Am.
Well, here's the fuel mileage comparisons, assuming all A/T:
'07 TLS 17 city 26 hwy
'04 TL 18 city 26 hwy
'03 G.A. 18 city 27 hwy
Let's be realistic, if you saw 23.5 on the V-6 Grand Am all day long in city driving it must have been an early hybrid and if the 175hp powerhouse in the Pontiac gave you more acceleration than the TLS, then maybe the Acura is running on 4 cyl. The 8 sec 0-60 time is a far from the TL let alone a TLS. Guess you should have kept the Grand Am.
#32
Team Owner
#33
Team Owner
To take it even further, I can tell people that mpg is directly based on average mph. Compare your mpg in the mpg vs mph thread and you'll see your TL is normal. No one gets this. Mine will knock down 32-34 on the freeway but when I do a month worth of pure city driving, the 1.5 miles each way to work and back it's normal to see 9mpg and 7mph. It's just the way it is when you spend so much time sitting at redlights and accelerating to 50mph only to have every closely spaced light turn red on you.
"City" does not describe the driving type. Some city driving could have an average mph of 45mph and 26mpg. Some city driving like mine has an average mph of 7 and mpg of 9. Only mph is useful in comparing car to car.
It takes a certain hp to accelerate a certain weight at a certain rate. With similar driving styles, there's not going to be a huge difference between similar cars, not until you're at freeway speeds where aerodynamics and friction come into play.
"City" does not describe the driving type. Some city driving could have an average mph of 45mph and 26mpg. Some city driving like mine has an average mph of 7 and mpg of 9. Only mph is useful in comparing car to car.
It takes a certain hp to accelerate a certain weight at a certain rate. With similar driving styles, there's not going to be a huge difference between similar cars, not until you're at freeway speeds where aerodynamics and friction come into play.
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