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Thread: Fuel economy thread

  1. #1
    Join Date
    Sep 2004
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    Californian by nature, living in Teggsas.
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    4,133

    Fuel economy thread

    Everytime I post in an automotive forum, it seems like there's a fuel economy thread. Thought I'd start one here.

    Just post your vehicle, mods (if any), and driving style along with your fuel economy. If you use a the imperial system and want to convert to metric, just type (xx)mpg in l/100km into Google and it'll do the math for you. I'll start.

    '99 Dodge 1500 conversion van, 360ci (5.9l) OHV Magnum V8, 4-speed auto, 3.55:1 gears. Rolling hills, conservative driving style, lots of cruise control, little a/c use, apx. 75% in-town/25% highway use.

    13.8mpg / 17l/100km average, best was 15.69mpg or 15l/100km (which I can improve upon)
    An it harm none, do as ye will

    Approximately 79% of statistics are made up.

  2. #2
    Join Date
    Feb 2004
    Location
    Connecticut, USA
    Posts
    6,066
    '04 Dodge Dakota Sport Plus club cab, 4.7L SOHC Magnum V8, 5-speed/multi speed auto(3rd gear, 4th gear, and 5th gear each have an overdrive),3.92 gears. Flowmaster exhaust. Hills, not a lot of flat land, agressive starts and overdrive is usually off. Mostly city driving, some highway.
    Avg about 12mpg. Highway gets up to 22.1mpg. Towing about 6mpg.

  3. #3
    Join Date
    May 2004
    Location
    Australia.
    Posts
    12,833
    92 Holden Commodore. 3.8lt V6 (High-flo cat with sports system, S/C Cold Air Intake) 4 speed Auto. Factory stock diff 3.08. Run 98 octane only. No cruise control.

    Driving style can be on the fast accelerating at times but i'm a smart driver so i also know how too save fuel at times when needed. 99% Local driving very rare too hit the highways.

    Tank size is anyone's guess as it's not standard and has a large dent, But takes on 66 litres average.
    14.6l/100km. 19.2/mpg. It could and should run under 10l/100km 28/mpg 100% on the highway.
    "Just a matter of time i suppose"

    "The elevator is broke, So why don't you test it out"

    "I'm not trapped in here with all of you, Your all trapped in here with me"

  4. #4
    Join Date
    Mar 2004
    Location
    Eindhoven, The Netherlands
    Posts
    7,827
    Citroen C5 Berline 1st generation 1.8 Petrol Différence
    Manual gearbox.

    City driving - 1 l / 10 km
    Average - 1 l / 12 km
    Autobahn - 1 l / 13.5 km (fully loaded,3 persons and the boot and rear seat full of junk.
    Cruisecontrol Autobahn - 1 l / 15 km (fully loaded,3 persons and the boot and rear seat full of junk.
    Italian driving - 1 l / 8 km (!!)
    Average driving with airconditioning on 1 l / 11 km

  5. #5
    Join Date
    Mar 2006
    Location
    Copenhagen, Denmark
    Posts
    146
    1990 FIAT Panda 1000 S.i.e 61ci 4 cyl. 5 speed manual
    90% city 10% motorway (110 km/t - 69 mph) 40 mpg / 17 km/l
    Team Fiattitude

  6. #6
    Join Date
    Apr 2003
    Location
    Rozenburg, Holland
    Posts
    27,315
    Citroen C5 Break HDi 2.2 Exclusive, 165 BHP. 5-speed manual
    between 6-7 litres per 100 km (33-39 mpg).
    We have a flat country, but regular traffic jams.
    "I find the whole business of religion profoundly interesting, but it does mystify me that otherwise intelligent people take it seriously." Douglas Adams

  7. #7
    Join Date
    Jan 2004
    Location
    Kyushu
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    6,039
    mini cooper s with no mods (a rarity, but i like my warranty)
    with my heavy right foot, a pretty good mix between city and highway, and the addition of up to about 15% ethanol to our gas here in VA, i am getting about 26 mpg.

    before the ethanol, i was making just below 28mpg, but the ethanol makes it slower, rougher running, poorer mileage, and makes the tailpipe black like an old diesel's.
    Honor. Courage. Commitment. Etcetera.

  8. #8
    Join Date
    Sep 2004
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    Californian by nature, living in Teggsas.
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    Quote Originally Posted by cmcpokey
    mini cooper s with no mods (a rarity, but i like my warranty)
    with my heavy right foot, a pretty good mix between city and highway, and the addition of up to about 15% ethanol to our gas here in VA, i am getting about 26 mpg.

    before the ethanol, i was making just below 28mpg, but the ethanol makes it slower, rougher running, poorer mileage, and makes the tailpipe black like an old diesel's.
    Yeah, the ethanol isn't going that well in cars that aren't made for it. I've heard similar complaints all over the place about it.Performance builders familiar with building alcohol drag engines are looking pretty hard at it though since it has characteristics similar to alcohol (high resistance to detonation, but less heat energy than gasoline).
    An it harm none, do as ye will

    Approximately 79% of statistics are made up.

  9. #9
    Join Date
    Jul 2003
    Location
    Belgium
    Posts
    1,991
    Clio 1.6 16V
    7-8L/100km on average
    6.2l/100km or so on long highway trips
    8.4l/100km when I drive agressively, i'm averageing 8.3 at the moment according to the on board computer.

    I once managed to average 5.8l/100km which is impossible according to Renault. I'm really happy with the fuel economy of this little car. It's next to impossible to average more than 8.5 litres.
    Last edited by Lagonda; 10-30-2006 at 02:05 PM.

  10. #10
    Join Date
    Dec 2005
    Posts
    112
    Alfa 166 sedan, 2.0 TS 16v, 150 Hp - I manage just a regular 1 : 9,5 kms - on the highway to France just 1 : 11 kms; excactly like Alfa Romeo states in their brochure.

  11. #11
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    Kyushu
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    Quote Originally Posted by jcp123
    Yeah, the ethanol isn't going that well in cars that aren't made for it. I've heard similar complaints all over the place about it.Performance builders familiar with building alcohol drag engines are looking pretty hard at it though since it has characteristics similar to alcohol (high resistance to detonation, but less heat energy than gasoline).
    theoretically it would work great, it boosts the octane quickly, easily, without as much refining of the gas, but the O2 sensors, and fuel injection systems need to be re-callibrated. what ends up happening is it doesn't see the right numbers coming out of the tail pipe, so it dumps more gas in, and then you get poor mileage.
    Honor. Courage. Commitment. Etcetera.

  12. #12
    Join Date
    Jul 2003
    Location
    Northampton, Pennsylvania
    Posts
    7,989
    97 Golf 2.0 8v, drilled airbox with K&N, no muffler (huge loss of backpressure), close ratio 16v trans 3.67 final drive.
    Beat on at all times.
    Averaged 28-29mpg driving to school every day.
    [O o)O=\x/=O(o O]

    The things we do for girls who won't sleep with us.

    Patrick says:
    dads is too long so it wont fit
    so i took hers out
    and put mine in

  13. #13
    Join Date
    Aug 2003
    Location
    NEW YORK
    Posts
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    1998 Chevrolet Blazer LT 4x4 with the 4.3 liter vortec V6. On average both city and highway driving its around 18mpg. I still have the window papers from the dealership when it was new and it says 16 city and 21 highway, so yeah its still pretty close.
    John says:
    so i had to dump acid into the block tank today
    i'm afraid to fap
    cause i got it on my hands

  14. #14
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    Aug 2004
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    8,068
    - Peugeot 206 1.1 LX.
    - No mods.
    - Drive it like you stole it.
    - 35mpg street, 40mpg motorway.

  15. #15
    Join Date
    Mar 2005
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    Quote Originally Posted by IWantAnAudiRS6
    - Peugeot 206 1.1 LX.
    - No mods.
    - Drive it like you stole it.
    - 35mpg street, 40mpg motorway.
    you crazy brits

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