Last post on May 17, 2012 at 9:33 PM
You are in the Subaru Legacy & Outback
What is this discussion about?
Subaru Legacy, Subaru Outback, Fuel Efficiency (MPG), Sedan, Wagon
#95 of 104 Re: bad MPG [xwesx]
Nov 10, 2011 (12:59 pm)
If it's cold, mileage will basically stink until the engine is warm. So for the first mile or two you are getting terrible fuel efficiency.
That's why it's a good idea to combine errands - the engine's already warm.
#96 of 104 Re: bad MPG [ateixeira]
Nov 10, 2011 (5:03 pm)
Thanks both xwesx and ateixeira!
Yes, I do have a lot of stop/go on the way to work and back to home in my city. The weather here is nice but I still warm up my car every morning (until the blue light off) and remind my wife to do so as well. I believe the MPG on highway is much better than the city roads with a lot of traffic lights and stop signs. Anyway, I will keep watching my MPG.
#97 of 104 Re: bad MPG [skyice]
Nov 10, 2011 (7:37 pm)
The weather here is nice but I still warm up my car every morning (until the blue light off) and remind my wife to do so as well.
THAT is what's killing your gas mileage. Modern cars do not need to be "warmed" up before driving off. Start the car and drive "sensible" until it's warm.
#98 of 104 Re: bad MPG [skyice]
Nov 11, 2011 (8:07 am)
You can drive while it warms up. The ECU is programmed for that, actually, so it's OK to drive off.
You should give it enough time to establish oil pressure and flow before driving off, but that's a matter of seconds, not minutes.
#99 of 104 Re: bad MPG [ateixeira]
Nov 11, 2011 (9:29 am)
This morning I calculate the MPG again by myself between two filled-up. The MPG is 16.2. 50 miles city roads killed 13 litre. The trip computer for the average MPG reset after last filled up is accurate, showing 16.2 MPG.
I don' think it relates to the warm-up engine issue. It'd never happened before I drove extra 15 miles when the low fuel light was on last week. I think the poor MPG may be the consequence of potential gas pump damage. Is that possible?
#100 of 104 Re: bad MPG [skyice]
Nov 11, 2011 (9:53 am)
It would be hard to isolate it to one factor, since there are so many.
Remember, when you're sitting still, idling, you are getting 0 mpg. Enough of that will bring your average down no matter what kind of roads you drive on.
#101 of 104 Re: MPG getting better at 30,000 miles [easypar]
Mar 31, 2012 (1:48 pm)
I have had a similar experience. On my last trip I got 35.7 mpg, mostly interstate driving with 2 adults and luggage. I also have noticed that if I buy my gas in central or southern Virginia, I will get up to 2 mpg better than Maryland gas. I have the same 2010 Outback Ltd with 2.5 ltr.
#102 of 104 Re: MPG getting better at 30,000 miles [lyka]
Apr 03, 2012 (1:06 pm)
We have 33k miles on our 2010 Legacy 2.5i, generally getting 27 to 27.5 MPGs with about 35% City (some suburban , but also Real City - NYC that is) and 65% Highway (NYC Highway- traffic, of course). A little drop off during winter months due to "winter Blends of gas".. More Ethanol. Can't say any big difference since hitting 30K miles on the clock. My 26 year old son uses the car to commute to his job - 60 miles a day (Thank God he has a job), we share the expense (Insurance, loan, gas, - no way could he afford it on his own). So considering he does NOT drive like your Grandma...27 average MPG is pretty good. Last week, I took the car 90 miles round trip with anew fill up, I got 31.5 MPG with mostly highway and some suburban city miles. That's the internal trip computer readings.
#103 of 104 PS on the MPG message...
Apr 03, 2012 (1:09 pm)
I also find that every now and then I'll put Mid Grade or Premium - 10 or more gallons, I do see a slight increase in the MPGs - maybe .5 / gallon. With the price difference in the grades of gas, it's NOT worth it. But I'm Old School....a tank of Hi Test is like Brile Cream: A Little Dab'll Do Ya.
May 17, 2012 (9:33 pm)
My 2011 OB2.5 CVT just passed 10K in OD reading so that it's fully broken in now. With the warm weather last Saturday, I thought it's good chance to know what is the optimal MPG this car can do when we went to LA from San Diego.
I filled up before and after the trip. Set cruise at 65 (I know it's slow:); about 20% of the time was 20-40 mph because of slow traffic. The total trip was 237 miles and gas used was 6.56G. I knew the CVT is good, but the whopping 36.13MPG (by hands, 35.7 by trip computer) was unexpected.
My life time MPG for the OB is about 29(by hands) vs 30(by trip computer).