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2012+ Subaru Impreza Real World Fuel Economy

139 messages,  Last post on Apr 26, 2013 at 10:05 AM

You are in the Subaru Impreza Forum.

What is this discussion about? Subaru Impreza, Subaru Impreza WRX STi, Gasoline, Fuel Efficiency (MPG), Sedan, Wagon

Messages Page 3 of 15

#15 of 139 Re: 2012+ Subaru Impreza Real World Fuel Economy [imprezasport] by sgoldste01

Aug 08, 2012 (6:31 am)

Replying to: imprezasport (Aug 06, 2012 1:04 pm)
First, make sure you have all of the latest firmware updates. I've heard there's a firmware update for 2012 Imprezas with the CVT that smooths out the engine braking symptom.
 
As for your substandard fuel economy, there are many possibilities:
  • Is your driving mostly city?

  • When on the highway, what speed do you drive?

  • Do you drive many short trips (less than 10 miles)?

  • Do you accelerate briskly or slowly?

  • When cruising on the highway, do you use cruise control?

  • How many miles are on your car?

#16 of 139 Re: 2012+ Subaru Impreza Real World Fuel Economy [imprezasport] by jd_24

Aug 10, 2012 (5:28 am)

Replying to: imprezasport (Aug 06, 2012 1:04 pm)
"sgoldste01" had good things to try. Also things to consider.
- Are you using A/C? (1 to 3 mpg drop.)
- How much stuff in the car (additional passengers?)
- Tire pressure? I believe suggested is rght about 30psi. Try just a bit higher like 32 or 33. I believe the last I checked mine it was around 33 or 34.
- Check your odometer. This probably won't make a big difference but many have found it off by about 3%. Example: odometer reads 30 miles, but you really only went 29. Its off in the right direction for the warranty!
 
The longest highway trip I've taken with my Impreza Sport returned some of my worst mpg at 32mpg. I had 4 passengers and luggage, plus we used A/C. Otherwise I'm happy and getting 34 to 36 mpg hand calculated. My commute is mostly highway, but has some stop-n-go traffic and construction nighmares this summer.

#17 of 139 Re: 2012+ Subaru Impreza Real World Fuel Economy [jd_24] by wvw

Aug 19, 2012 (9:17 am)

Replying to: jd_24 (Aug 10, 2012 5:28 am)
I have an Impreza hatchback and have around 1500 miles so far. I've been a little disappointed in the highway MPG (33-4 , generally with AC on- which I thought I'd heard actually helped in highway driving?), but it's been better than predicted in local driving. My '95 Legacy wagon outperformed the predicted MPG on the highway and I was hoping for the same with this, but it still has good gas mileage overall for an AWD car.

#18 of 139 Re: 2012+ Subaru Impreza Real World Fuel Economy [wvw] by 2toroll

Aug 19, 2012 (2:59 pm)

Replying to: wvw (Aug 19, 2012 9:17 am)
I just refilled the gas and reset the trip odometer/MPG monitor. Have driven maybe 5 miles since and it's saying I am now down to about 11 MPG. Before the reset I had dropped to about 18.5 MPG, mostly city and short trips and with AC on (I live in the south). I am going to take a long trip in a couple weeks, mostly on highway, and will be curious to see what kind of MPG I get. Then I will be back to the dealer to talk to them about this. If MPG doesn't improve, I am going to have a serious chat with Subaru. I sold my 97 Civic that got 38 MPG on the highway and decent city MPG too and bought this car, which I wouldn't have done if the MPG was disclosed with numbers like I am getting. Other than the MPG, I like the car.

#19 of 139 Re: 2012+ Subaru Impreza Real World Fuel Economy [wvw] by jd_24

Aug 20, 2012 (8:28 am)

Replying to: wvw (Aug 19, 2012 9:17 am)
AC on will not help your highway gas mileage. AC may not hurt as much as having the windows wide open. Just running the vent and windows up is the best if the temperature allows it.

#20 of 139 Re: 2012+ Subaru Impreza Real World Fuel Economy [2toroll] by jd_24

Aug 20, 2012 (8:35 am)

Replying to: 2toroll (Aug 19, 2012 2:59 pm)
I hope you get better MPG with the highway trip. Many new cars today don't get good mileage with short trips (under 5miles). In the Prius forums one person was in the 25?? MPG range with their Prius just because of short trips. The engine never warms up and in the Prius case the battery doesn't have enough time to charge. Just because the blue light goes off doesn't mean everything is up to ideal perforamnce temperature.

#21 of 139 Poor mpg and dealer or corporate does nothing by tonyhodge

Aug 22, 2012 (12:14 pm)

i made a mistake of buying a 2012 subaru impreza and after many emails and calls nothing is being done.
 
My car has around 3600 on the clock and i drive mainly in the city, i get an average of 20 to 21 mpg if im lucky and i drive 10 miles to work and 10 miles back.
 
I also do some highway trips and decided to let my wife borrow the car for a week to commute to work about 1 hour driving on the parkway to and 1 hour back.
 
The most we got out of the car is 27mpg which is 8 mpg lower than the estimate mpg for highway driving. The sad thing is my 2002 for focus which was old tired and had 115,000 on the clock was getting better mpg than my new car.
 
I honestly wish i had kept it now. Anyone have any suggestions or tricks or anyone having similar problems please feel free to post.

#22 of 139 Re: Poor mpg and dealer or corporate does nothing [tonyhodge] by typesix

Aug 23, 2012 (7:14 am)

Replying to: tonyhodge (Aug 22, 2012 12:14 pm)
Consumer Reports tested a 2012 Impreza hatchback in the June 2012 issue and got 19mpg city, 33 mpg highway and overall average of 26mpg. How fast do you drive on highway? The EPA numbers are generally what can be expected if one follows the speed limit. Air conditioning will decrease mpg about 10%. Driver habits have the most effect on mpg.

#24 of 139 Re: Poor mpg and dealer or corporate does nothing [typesix] by tonyhodge

Aug 23, 2012 (7:38 am)

Replying to: typesix (Aug 23, 2012 7:14 am)
Im usually driving around the 65 to 70 mpg on the parkway and around town im always at the speed limit due to the amount of police in the area. I also tested without the ac and it made a little improvement but no where near the epa estimates. Im glad its not just me with the poor millage and that its been tested by people who know what they are doing.
 
I got a freephone number to see what the buy out is on my lease and also if i can trade in my lease with someone else so they can take it over because im getting less mpg than my previous car and the reason i got this was for more mpg.

Messages Page 3 of 15

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