I've been noticing my car has been getting 14.1 MPG for the past 6 months

I don't do highway driving, mostly suburbs with only 5 traffic lights in a 5 mile stretch

All 4 tires are like new, always at 32PSI

Is this normal or do I have a faulty sensor? O2? PCV?

 

For starters, what are you doing to calculate that? I've been tracking my MPG since day one of ownership with Fuelly so I've got an accurate look at what I'm actually getting.



When's the last time you did spark plugs? Air filter? Etc

 

That's exceptionally low. The car will do worse on winter fuel and if you live in a place that gets cold in winter, but the worse I've ever seen in continuous stop and go traffic is about 18 mpg. Something is wrong, assuming the calculations are correct.

 

Since the torque converter recall software update I have been averaging 13-14MPG year round on a similar commute (I use Gas Cubby). Ive been to several dealers, had the car checked out multiple times, and even opened a case with ACR and they all believe my MPG is normal based on the new shifting program. Pisses me off, but I have been unable to find anything else to do short of getting a new car.

 

I use the MID MuffinMan

I'm going to buy some new spark plugs and see if performance improves

 

I'll have to look at my car, but in my other vehicles that wasn't the most reliable source. Better than going "I get 200 miles per half tank, I used to get 300!" but not quite as accurate as resetting the trip meter and dividing that by the gallons you fill the car up with.

 

exactly same here


that is my almost all city drive mpg 14 15 heavy throttle foot

highway is 20 to best case 24

 

My daily commute (3 miles stop & go, 2 miles hwy) is around 17 to 18mpg. hwy going 78mph w/ cruise is around 25mpg

 

Drei, if it's dry you can check with a local tire guy and see if you should try a higher psi. In dry SoCal with the OEM tires I normally run 40 psi. It makes the ride a little rougher but you mpg should dramatically improve.

Davensd

 

Here's one other thought. If you keep the HVAC on "Auto" setting, the A/C comes on quite a bit to reduce cabin humidity, even if it's not warm outside. When outdoor temps are not warm, I manually turn the A/C off to stop this. The cabin feels very comfortable, but I think it helps a couple of MPG, especially in stop and go driving. I

 

So I had the spark plugs & head cover gaskets replaced AND had the valves adjusted.

Will report back if I notice improvements

 

Drei, check the air filter! A dirty (very dirty) air filter can cause a huge loss of power and fuel economy.

 

You're right, I just ordered this kit that includes both the engine and cabin filter

2009 2010 2011 2012 2013 2014 Acura TL Engine Air A C Cabin Filter Kit New | eBay

 

You can get both of those on Amazon for $35 with free shipping, FYI.

 

Glad it's figured out! I have seen a dirty air filter kill power and MPGs many times.

 

On the cabin filter, I am liking
Mann Filter MCF 1008 Cabin Air Filter with Polyphenol Layer

One note on the cabin filter - make sure you get the edges of media pinched into the slots on the 2 sides. Seen too many times where the filter is just thrown in willy nilly

On a personal note: I am dreading carrying my summer tires and rims down 3 flights of stairs...at least the winter tires and rims are hell of lot lighter

 

I have been getting crappy fuel economy too! Almost all winter it has been 13-15L/100KM. I live in Ontario, Canada so I do experience pretty cold winters. Also 95% of my driving is city. Cold weather and no remote start makes for warming up the car for a 12 minute drive very troublesome. My temp control is also set to Auto... I will see if it improves when temperatures improve.

 

MPG's have more or so stayed the same :/

BUT

After the valve adjustment and new spark plugs, wow. The car pulls harder and no more sluggish shifts in all gears, feels like I'm in Sport mode when its just Drive. I definitely recommend this if you have over 100k

 

I have similar commute of about 5-7 miles, with 8-9 traffic lights, and 3-4 stop signs. I get about 14 - 15 mpg, so very similar. Asked dealer couple times, and he says that is normal with the commute I have.
I need to change the air filter to see if that helps.

 

I was getting around 17mpg and have always thought the miles counter on our cars was not always rite. a few weeks ago i reset the ecu (Ktuner) back to factory and took off Neg bat cable and it reset the MPG on both A & B.
Now i'm averaging 29.5 hwy and 17 city on my last 2 fillups.
don't know if this helps but just my 2 cents.