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Old 10-21-2014, 11:31 AM   #1
PittsburghPete
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Default 2014 Impreza only avg 17.1mpg in city?

Just bought a 2014, base model hatchback CVT and I've only gotten 400 miles combined on my first 2 tanks of gas. The dash calculator says i only averaged 17mpg on this last tank.

I've only done city driving, primarily 35-45mph stop and go with little traffic. It is worth noting that i live in Pittsburgh, which is a hilly city (think san francisco).

I called the dealership and they said that is a "normal" figure while the engine breaks in over the first 3k miles. He also said that these imprezas don't ever do much better than 24mpg as a rule in Pittsburgh.

I'd really appreciate any knowledgeable feedback! Thank you!!
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Old 10-21-2014, 11:58 AM   #2
mopartodd
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Yeah, if you're drivin around in the Burgh, it's probably about right. What part of tahn yinz talkin about.

GO STEELERS!!!!
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Old 10-21-2014, 12:00 PM   #3
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That's pretty much accurate, though I would think you'd do more like the 24 the dealership said. If it's all short trips with a cold car I can imagine not getting above 18mpg, but if you're doing 15-30 minute drives I would think more 22-24.

All short trips mine will stick around 18mpg, running more around town it'd be 22-26 for me. This is Omaha, a bit flatter. I know Pittsburgh well, and that sort of driving is definitely not easy on the mpg; it's not like mountain driving where you can coast down a long hill and up again. Going down a hill there you'll be shortly breaking to stop, and have to start again, uphill, using lots of gas to get going again.

Luckily, if you take a nice long highway trip you should be able to do much better, at or even exceeding the rated mpg.
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Old 10-21-2014, 12:10 PM   #4
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Mine fluctuates between 18-19mpg around town
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Old 10-21-2014, 12:15 PM   #5
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That's because the car doesn't run on 0W20 when new. On the first oil change the MPG improve drastically. Also it take about 12min~ to get to the optimal engine operation. When below 0C it can take 30min . So you have to drive longer to get lower MPG.

During the break-in it is important to make the ring sit properly thus playing with the CVT is good for the engine(tapping the accelerator while on engine temperature operation driving like an idiot without passing 2800rpm).
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Old 10-21-2014, 12:21 PM   #6
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Originally Posted by mopartodd View Post
Yeah, if you're drivin around in the Burgh, it's probably about right. What part of tahn yinz talkin about.

GO STEELERS!!!!
Squirrel Hill! Great game last night (glad i decided to go)! we'll take what we can get
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Old 10-21-2014, 12:24 PM   #7
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That's pretty much accurate, though I would think you'd do more like the 24 the dealership said. If it's all short trips with a cold car I can imagine not getting above 18mpg, but if you're doing 15-30 minute drives I would think more 22-24.

All short trips mine will stick around 18mpg, running more around town it'd be 22-26 for me. This is Omaha, a bit flatter. I know Pittsburgh well, and that sort of driving is definitely not easy on the mpg; it's not like mountain driving where you can coast down a long hill and up again. Going down a hill there you'll be shortly breaking to stop, and have to start again, uphill, using lots of gas to get going again.

Luckily, if you take a nice long highway trip you should be able to do much better, at or even exceeding the rated mpg.
Thanks for the great feedback! I didn't realize a cold engine cuts down mpg. Just so happens the vast majority of miles so far have been less than 10 minute trips.
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Old 10-21-2014, 12:30 PM   #8
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That's because the car doesn't run on 0W20 when new. On the first oil change the MPG improve drastically. Also it take about 12min~ to get to the optimal engine operation. When below 0C it can take 30min . So you have to drive longer to get lower MPG.

During the break-in it is important to make the ring sit properly thus playing with the CVT is good for the engine(tapping the accelerator while on engine temperature operation driving like an idiot without passing 2800rpm).
so, in terms of making the "ring sit properly" during break in you're suggesting not gunning it? anything else i can do to break this car in properly?

Thanks!
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Old 10-21-2014, 01:01 PM   #9
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Originally Posted by LGA2011 View Post
That's because the car doesn't run on 0W20 when new. On the first oil change the MPG improve drastically. Also it take about 12min~ to get to the optimal engine operation. When below 0C it can take 30min . So you have to drive longer to get lower MPG.

During the break-in it is important to make the ring sit properly thus playing with the CVT is good for the engine(tapping the accelerator while on engine temperature operation driving like an idiot without passing 2800rpm).
oops. just reread your post and think i got it wrong. youre advising that i *do* zip around in the car for the first few thousand miles, as long as it's under 2800rpm?
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Old 10-21-2014, 01:21 PM   #10
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Once the engine is warmed up, I think most here would even recommend taking it to 5-5.5k rpms a few times. Not running it hard enough can cause the rings to not seat properly.

Varying the rpms is the recommended style.

And yes, the cold engine in these things guzzle gas like no other. You can set the mpg meter to instant mpg display and cry at the 8-10mpg you get when first starting up in the cold.
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Old 10-21-2014, 01:53 PM   #11
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Once the engine is warmed up, I think most here would even recommend taking it to 5-5.5k rpms a few times. Not running it hard enough can cause the rings to not seat properly.

Varying the rpms is the recommended style.

And yes, the cold engine in these things guzzle gas like no other. You can set the mpg meter to instant mpg display and cry at the 8-10mpg you get when first starting up in the cold.
Thanks for the education, Xafen!
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Old 10-21-2014, 02:04 PM   #12
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Quote:
Originally Posted by LGA2011 View Post
That's because the car doesn't run on 0W20 when new. On the first oil change the MPG improve drastically. Also it take about 12min~ to get to the optimal engine operation. When below 0C it can take 30min . So you have to drive longer to get lower MPG.

During the break-in it is important to make the ring sit properly thus playing with the CVT is good for the engine(tapping the accelerator while on engine temperature operation driving like an idiot without passing 2800rpm).
It doesn't? What does it run?
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Old 10-21-2014, 02:06 PM   #13
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Originally Posted by PittsburghPete View Post
Squirrel Hill! Great game last night (glad i decided to go)! we'll take what we can get
Absolutely! Hope they can keep it going. I really miss home(Pittsburgh).
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Old 10-21-2014, 03:33 PM   #14
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Absolutely! Hope they can keep it going. I really miss home(Pittsburgh).
i know the feeling. just moved back last year after 20 years in Cali/NYC. the city has never been better! And we just bought a gorgeous house in Squirrel Hill for less than a studio apt in NYC! Haha
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Old 10-21-2014, 04:08 PM   #15
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Quote:
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And yes, the cold engine in these things guzzle gas like no other. You can set the mpg meter to instant mpg display and cry at the 8-10mpg you get when first starting up in the cold.
Yes it's gozzles gas not only from the cold engine, but from the cold CVT which will intentionally slip while it's cold and won't lock until it's warm.

As for MPG improvement after break-in, I only got ~10% improvement and it came within the first 3 month. I think it might be just getting more used to the CVT and driving efficiently, than the break-in.
After my 1st oil change, I saw no improvement in MPG. I have ~26k on my car now.
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Old 10-21-2014, 08:23 PM   #16
Thefifth
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So is the trans causing unnecessarily high RPMs on acceleration when the engine is cold? Seems significantly more damaging than having a cold transmission. Freezing cylinders don't like to be torched.
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Old 10-21-2014, 11:28 PM   #17
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I just had my 2013 Hatchback CVT in for its 30k mile service. My average mpg was around 28 city/34 highway. Unfortunately, now I'm not getting anything better than 24 mpg combined. I'm not sure what happened, but I'm hoping after a couple hundred more miles it returns back to normal. Anyone else have this happen?
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Old Yesterday, 03:57 AM   #18
LGA2011
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It doesn't? What does it run?
I highly believe it start with 5w30 in it(I could be wrong).
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Old Yesterday, 05:50 AM   #19
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Quote:
Originally Posted by taz_00 View Post
I just had my 2013 Hatchback CVT in for its 30k mile service. My average mpg was around 28 city/34 highway. Unfortunately, now I'm not getting anything better than 24 mpg combined. I'm not sure what happened, but I'm hoping after a couple hundred more miles it returns back to normal. Anyone else have this happen?
Do you know if the fuel has been switched over to a winter blend?
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Old Yesterday, 06:51 AM   #20
79letour
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Originally Posted by LGA2011 View Post
I highly believe it start with 5w30 in it(I could be wrong).
According to SOA they come filled with 0w20 Idemitsu.
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Old Yesterday, 10:54 AM   #21
taz_00
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Originally Posted by mopartodd View Post
Do you know if the fuel has been switched over to a winter blend?
I'm not sure. It's possible the blends just changed at the stations with the cooler weather coming around in the NE USA, but it seems a little early yet.
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