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2012+ Subaru Impreza Real World Fuel Economy

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

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

Messages Page 3 of 15

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

Aug 06, 2012 (1:04 pm)

Replying to: 2toroll (Aug 05, 2012 4:06 pm)
My gas mileage has been terrible. It has been going downhill instead of better. I have been getting 22 mpg around town and I just got back from a 440 mile trip on interstate and I got 31 mpg. I complained to Subaru and they said to take it to the dealer. The dealer checked it over and said there was nothing wrong and they could not do anything about it. Very disappointed in the car. I have the 2012 Impreza Sport. I bought it get better gas mileage than by 2004 Mustang and with that I got 19 around town and 28 on the highway. Thinking about getting rid of the Impreza since I am so frustrated with it and no one will do anything about it.

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

Aug 07, 2012 (7:31 am)

Replying to: imprezasport (Aug 06, 2012 1:04 pm)
Something must be wrong. Is yours a CVT? I would try inserting the FWD fuse for one tank just to see what affect that has.
 
No noises from the drivetrain, implying extra drag?

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

Aug 07, 2012 (5:10 pm)

Replying to: ateixeira (Aug 07, 2012 7:31 am)
It is CVT. There is no noise but when you are slowing up to come to a stop sign, the transmission sometimes grabs and almost stops you. I asked the dealer about it and they said that was just normal for the CVT. It also will jump every once in a while at a stop light. I thought it was stalling out the first couple of times they did it. The dealer said it was just the computer adjusting the idle. What is the FWD fuse?

#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.

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