akm3 Posted February 14, 2005 Share Posted February 14, 2005 I might be doing a several hundred mile commute twice a week at about 70mph. I want to know whether the OB XT or L GT will give me better gas mileage? (I know their gearing is different I just am not sure how to interpret those numbers into picking a 'winner'. Can anyone help me out? Also, I know generally manuals are more fuel efficient then autos, but does the auto's different gear give any advantage in any of these two cases? I might settle for the auto if it gets significantly better gas mileage at 70mph cruising. -Allen Link to comment Share on other sites More sharing options...
ih8vtec13 Posted February 14, 2005 Share Posted February 14, 2005 My driving ranges alot, but the best judgement I can give is on the way to my usual ski area. It is a winding road that I take at 50 to 60 for the most part and I get between 34 and 26 mpg after 45 minutes. BTW thats without much braking and hard acceleration. Link to comment Share on other sites More sharing options...
Ken S Posted February 15, 2005 Share Posted February 15, 2005 I can't provide a comparison of the two, but here's another data point: My 5EAT GT wagon averaged 26mpg with 70-80mph highway driving with two passengers, cargo area about 3/4 full in 90 degree weather last summer. That was with only about 3000 miles on the odo. My guess is that the OBXT would provide slightly less gas milage due to gearing, heavier weight and wider/higher profile tires (possibly more roll resistance). The roof rack would also add a bit of drag, but that can be easily removed. Ken Link to comment Share on other sites More sharing options...
mwiener2 Posted February 15, 2005 Share Posted February 15, 2005 Between the 5EAT and the 5MT, at crusing speeds you're probly not gonna get a noticeable difference. The LGT will get better highway milage becasue it has a lower profile and is more areodynamic. My first highway trip in my OBXT, about 600 miles, I got around 32 MPG at no more than 65 mph. Now I have an air brake (ski rack) and I normally cruise at around 75-80 and I get 18 MPG tops. I expect that to go up to 21 MPG once the ski rack comes off. My Mods List (Updated 8/22/17) 2005 Outback FMT Running on Electrons Link to comment Share on other sites More sharing options...
neelnug Posted February 16, 2005 Share Posted February 16, 2005 Just averaged 26.2 with an average speed of around 70. Thats with some aggressive driving and heavy braking.. and with only 400 miles on the car. Link to comment Share on other sites More sharing options...
Guest *Jedimaster* Posted February 16, 2005 Share Posted February 16, 2005 I'm betting on the GT being better than the XT due to the fact that the XT is heavier and sits higher- more wind resistance. Link to comment Share on other sites More sharing options...
SBT Posted February 16, 2005 Share Posted February 16, 2005 Different transmissin and axle gearing notwithstanding, I think from a "wheels turning" on the ground, the different tire size on the OBXT probably balances out the final gearing so that the OBXT and LGT end up being very close to the same between the vehicles. That said, though, the extra heigth, weight, drag and rolling resistance of the OBXT would ding your gas mileage 1 or 2 mpg, perhaps more. Everything else being equal, the LGT should theoretically get better gas mileage. SBT - Pro amore Dei et patriam et populum - Link to comment Share on other sites More sharing options...
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