Best Highway Fuel Economy

Discussion in 'Fuel Economy' started by Babsey, Oct 11, 2016.

  1. all_about_the_glide

    all_about_the_glide Well-Known Member

    I'd like to wait for the prime, but I'm told this has to happen now. ... there will be lots of options including the bolt by the end of 17 that I can exercise if I'm not happy with what I buy now.
     
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  2. xcel

    xcel PZEV, there's nothing like it :) Staff Member

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  3. EdwinTheMagnificent

    EdwinTheMagnificent Legend In His Mind

    You found a 16 year old living in your house ? And you let him DRIVE ?
     
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  4. Babsey

    Babsey Member

    I've done a bit more research, it looks like a tdi golf or jetta would be the best option, the elantra Wayne tested looks good too.
    My guess is a bmw 320d would be the best option going above 70mph because of it's low drag coefficient.
     
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  5. EdwinTheMagnificent

    EdwinTheMagnificent Legend In His Mind

    My choice for highway trips , besides the VW TDI's ( now unicorns ) , would be a Civic sedan 1.5T. They look kinda goofy , but I can ignore that when I'm inside.

    But I would like to hear more about that Elantra Eco.
     
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  6. all_about_the_glide

    all_about_the_glide Well-Known Member

    It's frightening...he looks a bit like me, yet unlike me at that age he seems responsible enough to operate a motor vehicle.

    Nobody had any business granting me a driver's licence at 16...I joke that hypermiling is my attempt to average the speed limit over my lifetime.
     
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  7. Babsey

    Babsey Member

    I agree the new Civic sedan being very aerodynamic would probably yield great highway economy, any stats on that one?
     
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  8. all_about_the_glide

    all_about_the_glide Well-Known Member

    The dealer sold the 13 PIP out from under me...so I ended up buying a 14 with slightly less miles and in great condition for a k more. There is zero evidence it was ever pluged in. The charger still has bubble wrap and the receptacle on the car looks mint, EV percentage on the display is zero...I'm not sure if it shows lifetime or not. The car was leased in NY, returned and then bought at auction by my MN dealer.
     
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  9. all_about_the_glide

    all_about_the_glide Well-Known Member

    68 mpg on the display for the trip home...0 EV miles, low hybrid charge status and a long freeway hill climb from just outside the dealer to Minneapolis where we did a fair amount of city driving. The Civic would of retuned low 50s.
     
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  10. all_about_the_glide

    all_about_the_glide Well-Known Member

    We own a Prius V, too, that I rarely drive. First impression is the Pip is in and out of the pack in a smoother slightly more powerful manner that improves FE. The traction battery seems to swallow lots of regen and fill quickly driving in the eco range on the hsd display.
     
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  11. BillLin

    BillLin PV solar, geothermal HVAC, hybrids and electrics

    Congrats and enjoy a great car, often underappreciated.
     
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  12. inflame13

    inflame13 Member

    I am quite impressed with the BMW 328d and its all-wheel-drive variant, the 328d xDrive and the all-wheel-drive 328d xDrive Sports Wagon, are among the best-equipped and most fun-to-drive cars that achieve 40 mpg or better on the highway.

    The rear-wheel-drive version of the 2016 328d sedan gets an estimated 32 mpg city and 36 mpg combined, while the xDrive models return 40 mpg on the highway, 30 in the city and 34 combined. All three use 2.0-liter turbodiesel engines, mated in the sedans to seven-speed automatic transmissions and in the wagon to an eight-speed automatic.
     
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  13. xcel

    xcel PZEV, there's nothing like it :) Staff Member

    Hi inflame13:

    Yes they do. There is a price to be paid for the roundel on the hood. Both at the dealership and again at the dealership later. The interior and cargo volume will leave owners feeling a bit shorted as well.

    Wayne
     
  14. Carcus

    Carcus Well-Known Member

    I think my '17 Civic 1.5 6mt may have the Elantra Eco beat. I was showing 42+ at 80 mph over a 15 mile stretch at 55 deg today. Just not quite sure about the winds. Still getting the car's mpg readout figured out but over the first two tanks it looks close (optimistic by less than 1 mpg)
     
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  15. xcel

    xcel PZEV, there's nothing like it :) Staff Member

    Hi Carcus:

    The 2017 Hyundai Elantra Eco is a more efficient whereas the 2016 Honda Civic 1.5-T is much more powerful.

    Compact Speed. vs FE Comparison

    2017 Hyundai Elantra Eco

    [​IMG]

    2016 Honda CIvic Touring - 1.5-T

    [​IMG]

    If you could, can you supply your aFCD offset since the capless refuel system prevented me from getting a hard lock on the offset. I have the odometer offset from my drives of the 1.5T Touring last year but could not lock down a full offset because of the capless system.

    Wayne
     
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  16. Carcus

    Carcus Well-Known Member

    Hi Wayne,

    1st three tanks {over 1200+ miles} have been 43.3 aFCD vs 41.5 actual (Exxon 87 E10), 43.0 aFCD vs 42.8 actual (Conoco 87 E0), 44.3 aFCD vs 43.1 actual (Shell 87 E10).

    (odometer is under-reporting by 1.5%, which is not included/calculated in the above numbers)

    /tire pressure: first tank was 36 psi (good ride), second tank was 40 psi (starting to get a little firm), 32 psi on door jamb, 44 psi max sidewall
     
    Last edited: Dec 10, 2016
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  17. Carcus

    Carcus Well-Known Member

    Wayne,

    I should know this, but I don't.

    Are your speed vs. fuel economy graphs corrected to a certain outside air temperature (i.e. corrected at 2.5% for each 10 deg F to a nominal OAT)?

    /Add, with admittedly limited data, ... what I have so far does indicate I'm doing better than the Elantra Eco, but not quite up to the Jetta 2.0 tdi 6mt. Definitely better than the civic sedan touring (cvt) numbers you posted. It's really surprising to me how good the high speed highway numbers are with this car (6mt), .. despite the higher rpms. The CVT must have a fair amount of mechanical drag going on.

    //Also of note, independent dyno tests are showing about190 hp and 190lbft, with 91 octane,.... not bad for an advertised 174 hp car.
     
    Last edited: Dec 5, 2016

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