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Real world mileage with 2.5 and CVT

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Comments

  • ateixeiraateixeira Posts: 72,587
    Really? I'm surprised it's that much better.
  • saedavesaedave Chicago, ILPosts: 679
    Of course it is not broken in yet so my foot is light on the pedal. :)
  • ateixeiraateixeira Posts: 72,587
    True, but if you continue to drive that way after break in, you'll likely do even better. :shades:
  • psdxohpsdxoh Posts: 4
    Yes on the snow. The rpms would get up as high as 2500 when climbing the mountains at 70 mph, but that's not high enough to make objectionable noise - at least to my ear. I think Subaru designed the engine with enough torque at a low enough rpm that the engine doesn't have to spin up to keep it rolling up a hill. I think the rpms were about 1900 at 70mph when on flat ground. If you're not in a big hurry - the 2.5 w/CVT is a very nice drivetrain.
  • pilot1226pilot1226 Posts: 165
    For what it's worth, our 2009 Legacy 2.5i Limited is pushing around 32-33mpg highway with the 4AT, we recently took around a 400 mile round trip from NJ to central PA. Cruise Control was on a majority of the time once we got out of NJ. I think it's great, because the specs for it say that the EPA mileage is in the mid 20's for highway. Combined and city it seems to drop into the low to mid 20's, but I've never seen it drop into the teens.

    And that's good enough for me. I used to own a Jeep Wrangler that got 9 mpg if I was lucky on the highway. It also couldn't go faster than 60mph and had a tendency to catch on fire. :P
  • matt1320matt1320 Posts: 20
    Mileage update for our Graphite '10 OB 2.5i CVT Premium w/mnrf. Miles were driven on surface roads in SW Chicago suburbs with 2693 mi. on odometer. Drove 366.1 mi. and filled with 14.7 gal. of 87 octane (lowest octane rating in Chicago area). According to the OB's mileage display this gave 26.1 MPG, manually this gave 24.9 MPG.
    So why the difference in mileage?......
    After refilling the tank, resetting the trip odometer, and clearing the avg. MPG in the computer, I noticed something. The needle on the fuel economy meter was not moving; It was fixed in the negative position until 1.0 miles were registered on the trip odo. Additionally, the avg. MPG indicator in the dashboard did not give a reading unil the trip odo showed 1.0 miles.
    Does this mean the computer calculates avg. MPG based on whole miles only?? Is this the source of the difference??
    So I checked my math using the numbers from our last tank: 366.1 mi. driven and 14.7gal. filled.
    Removing the value in the tenth position: 366/14=26.1 MPG = Computer
    With the value in the tenth position: 366.1/14.7=24.9 MPG = Manual
    What do you think? Does the same hold true for your calculations?
  • ateixeiraateixeira Posts: 72,587
    I think it waits 1 full mile so the average has some significance.

    If you zero out the odometer while coasting downhill, it would probably read 99.9mpg or something like that.

    The trip computer is using the ECU to estimate metered fuel, while you're using actual gallons used. 1.2mpg is a bit optimistic but not so far off that it's not useful.
  • easypareasypar ColoradoPosts: 173
    I too noticed that the needle on the "fuel economy" (vacuum) gauge doesn't move for the first mile or so. As to the difference between avg and actual mileage I always chalked that up to the fact that the "real time" reading is an extrapolation based on MPH and RPM and maybe even temperature and climb/descent attitude.

    I didn't realize you could "clear" the reading on the dashboard. I notice you wrote "average MPG", mine (Legacy Limited) has a distance to empty reading. Most of my other cars have allowed me to change the dashboard settings. Maybe I should read the owner's manual :confuse:

    easypar
  • matt1320matt1320 Posts: 20
    edited March 2010
    Extrapolation??? Two points for you. The temp here has been cold and the terrain is basically flat.
    There are 2 pegs in the gauge cluster, one left and one right. The left toggles and clears the trip odo's. The right toggles and clears the display in the dashboard. In the dash display, there are displays for avg. MPG, instant MPG, and distance to empty. You can toggle through the different displays at any time, but when the peg is depressed and held on a particular display, it will reset. We leave the display on the avg. MPG setting and reset it, and the trip odo, after refilling the fuel tank, prior to leaving the fuel station.
    Back in the day, my grandparents' Chevy Caprice wagon (the family Trukster) had a gauge that indicated instant fuel economy like our OB does. Weird.
  • easypareasypar ColoradoPosts: 173
    "The right toggles and clears the display in the dashboard. In the dash display, there are displays for avg. MPG, instant MPG, and distance to empty"

    Hey, look at that! I guess I should have figured it was there, my last 3 or 4 cars have had similar buttons.

    One other thing I've noticed is that the "distance to empty" is VERY SENSITIVE to real time changes in driving pattern. For example I'll fill up near home and put 50 miles or so on a tank, then I'll get on the interstate and head up to the Rockies for some skiing. As I start down the highway to Denver the DTE will go from 390 to 400 plus, until I start climbing the mountains, then it'll drop like a rock going up to the Eisenhower tunnel. On my way home (all downhill) it'll climb like crazy.

    I'm assuming that this rapid change may be a function of not having many miles on the car (about 3700) but as I get more miles it'll still change, just not as rapidly.

    Thanks for the head up regarding the right hand button

    easypar
  • ateixeiraateixeira Posts: 72,587
    They must assume you will continue to drive in the same fashion for the rest of that tank, whether you're autocrossing or hypermiling.
  • avery1avery1 Posts: 372
    How is it doing in all the snow?
  • easypareasypar ColoradoPosts: 173
    ateixeira wrote; "They must assume you will continue to drive in the same fashion for the rest of that tank, whether you're autocrossing or hypermiling"

    Ummm, no. In fact the opposite is true, it seems to change almost every 10 miles or so DEPENDING ON HOW THAT DISTANCE DRIVEN.

    BTW, mine does great in the snow, but then I grew up and lived in snow country (except for that 30 year sentence in Texas) so I know the way to drive in snow; no sudden maneuvers, no sudden starts or stops, 4 wheel drive only helps you GO, not STOP, and most important, the OTHER GUY IS AN IDIOT. This last one applies everywhere, not just in snow!

    easypar
  • ateixeiraateixeira Posts: 72,587
    Then they are assuming you will continue to drive as you have for the past 10 miles. :D

    That's basically what I meant.

    Let's say you change drivers at a gas stop on a road trip. The new driver goes 20mph faster than the previous driver.

    Makes sense for the trip computer to estimate the new driver's range.
  • matt1320matt1320 Posts: 20
    The Boss says it's good. Her previous car was an '01 Dodge Stratus R/T coupe, a Mitsu eclipse wearing a Dodge costume. It was powered by a 24v 3.0L V6 rated @ 200hp that averaged 22MPG in winter, and 25 MPG in summer in the same traffic that the OB is now in. It was a great car in the summer on warm, dry, smooth pavement. Any other road condition degraded its ability/safety.
    The OB's winter MPG is the same as the Stratus' summer MPG, and she uses the remote start to preheat when it's cold. Also, the OB's long travel suspension and taller tire sidewalls are more forgiving on our sh!++y cratered roads.
  • boulderbobboulderbob Posts: 1
    edited March 2010
    I had the experiment of filling up in Golden. miles to empty (MTE) changed to 400. Drove to Beaver Creek, leisurely. Parked over two nights and drove back. as I passed Golden, and the MTE says 410.

    The next week I took 5 people, their ski stuff (I have the Thule/Subaru top box) over to Glenwood and Aspen. No problems at the tunnel approaches, or Vail pass. Average was 26-28 MPG.

    Cheers
    2.5 CVT "Goldie"
  • easypareasypar ColoradoPosts: 173
    Filled up last evening on a 315 mile tank with about 40 of it being on the interstate at 75 MPH, the rest was ALL in town, maybe 15 miles at 50 MPH, the rest at 40 or less.

    12 gallons exactly, and I topped it off. 4130 miles on the odometer.

    26.25 MPG, not too shabby.
  • easypareasypar ColoradoPosts: 173
    Just prior to Memorial Day I had a tank that had ZERO freeway miles and about 25 miles of open road, the rest was all in town, maximum of 50 MPH and a fair amount of stops. I got 26.2 on that tank.

    I turned over 5,000 miles so I got the oil changed and tires rotated because we were going to Mt. Rushmore and that area. One one tank, with all but 100 miles being interstate we got 33.2 MPG. That was with two adults, a golf bag and a suitcase in the car. Usually drove 75 on the freeway.

    Pretty happy with the mileage. The only thing I don't lke is the seats don't give enough support and my back hurts after two hours in either seat. The lumbar support doesn't help so I'm going to look around for a little "bolster" thingee.
  • easypareasypar ColoradoPosts: 173
    Just returned from a trip from norther Colorado to the San Francisco area. On two three of the tanks I got above 35 mpg; 35.3, 35.7, 35.2. This was with two adults, various suitcases, one set of golf clubs and, on the tankful from Reno to Salt Lake City 3 cases of wine. That one was the 35.2. Except for about 25 miles that was all at 70 mph on Interstate 80.
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