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Thread: Fuel economy thread

  1. #646
    Join Date
    Feb 2004
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    Porto - Portugal
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    5,9L/100km (39.9mpg US / 47.9mpg UK)

    Ferrer, what's the engine in your car? and what is your highway speed?
    "Religious belief is the “path of least resistance”, says Boyer, while disbelief requires effort."

  2. #647
    Join Date
    Mar 2004
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    Eindhoven, The Netherlands
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    Did a long tour with the Puma club last weekend.
    Pumadrivers Gelderlandtour

    Total mileage: 504.1 km
    Fuel used: 40.78 Liters
    Average: 12.36 km/Litre (8.09L/100km)

    Of this distance 200 km relaxed, efficient highway driving and another 200km I want to be home fast driving, slightly over the limit (around 130km/h). The rest was stop-start traffic and slow touring at an average of 50km/h i'd say..

  3. #648
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    Quote Originally Posted by ruim20 View Post
    5,9L/100km (39.9mpg US / 47.9mpg UK)

    Ferrer, what's the engine in your car? and what is your highway speed?
    1.4 litre normally aspirated 16 valve four cylinder (109bhp).

    I refuse to go any slower than 150km/h there. I was looking at the instant fuel consumption readout in the trip computer yesterday and it is clearly where it suffers more. Fifth is short (about 34km/h per 1000rpm) and it doesn't help at all. A relatively small and underpowered engine in big(ish) and heavy(ish) car doesn't either.
    Lack of charisma can be fatal.
    Visca Catalunya!

  4. #649
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    7,96l/100km (35mpg UK / 30mpg US).

    I doubt I can go any lower than this without drastically reducing my speed. My cruising motorway speed now sits between 140km/h (87mph) and 150km/h (93mph).
    Lack of charisma can be fatal.
    Visca Catalunya!

  5. #650
    Join Date
    Feb 2005
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    Barcelona
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    Two consecutive fuel tanks in pretty much the same conditions over the same roads have yielded this results: 9,0l/100km and 6,6l/100km. I think there's something no quite right either with the gauges, the trip computer, the fuel tank or the fuel pump at the station...

    Also, both front lights died and had to be replaced. Result? 60€...
    Lack of charisma can be fatal.
    Visca Catalunya!

  6. #651
    Join Date
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    Barcelona
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    First tank I have measured in the little white hairdressers dream went up to 9,3l/100km (30mpg UK / 25mpg US).

    I'm pleasantly surprised.
    Lack of charisma can be fatal.
    Visca Catalunya!

  7. #652
    Join Date
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    Aberdeen
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    2,975
    About 28 UK mpg average so far in my new BMW. high teens town fuel economy saved by very good extra urban economy.
    autozine.org

  8. #653
    Join Date
    Apr 2003
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    Rozenburg, Holland
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    Quote Originally Posted by jediali View Post
    About 28 UK mpg average so far in my new BMW. high teens town fuel economy saved by very good extra urban economy.
    sounds like petrol...
    "I find the whole business of religion profoundly interesting, but it does mystify me that otherwise intelligent people take it seriously." Douglas Adams

  9. #654
    Join Date
    Aug 2010
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    England, somerset
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    915
    Quote Originally Posted by jediali View Post
    About 28 UK mpg average so far in my new BMW. high teens town fuel economy saved by very good extra urban economy.
    What BMW is it.
    Speed has never killed anyone. Suddenly becoming stationary, that's what gets you."
    — Jeremy Clarkson

  10. #655
    Join Date
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    Aberdeen
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    Quote Originally Posted by thebrochureman View Post
    What BMW is it.
    a 330i saloon with the n52 engine
    autozine.org

  11. #656
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    Feb 2006
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    Way Down South
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    Just finished the third tank of fuel in my freshly-rebuilt Porsche 356 hotrod. It's 1886cc on an SC case, crank and cams, heads/valves are stock. Gonna have to re-jet the Webbers, plugs have fouled twice in the past two weeks and mileage is just 17mpg. Should be +/-24mpg.
    '62 356S Notchback Hotrod
    '64 VW Microbus 21 Deluxe
    '67 911S Das Geburtstagsgeschenk
    '68 911T Targa Sporto
    '68 Mercedes 280 SL
    '62 BMW 700 Sport
    '63 BMW 700 Cabriolet
    '72 BMW 3.0CSL
    '72 BMW 3.0CSA
    '70 914/6 GT

  12. #657
    Join Date
    May 2010
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    Quote Originally Posted by csl177 View Post
    Just finished the third tank of fuel in my freshly-rebuilt Porsche 356 hotrod. It's 1886cc on an SC case, crank and cams, heads/valves are stock. Gonna have to re-jet the Webbers, plugs have fouled twice in the past two weeks and mileage is just 17mpg. Should be +/-24mpg.
    Is that the same quad cam motor you ordered a while back?

    Adding injector cleaner to the fuel once a month showed an improvement to 35mpg (US) for a couple of weeks.
    "Don't think your time on bad things
    Just float your little mind around"
    Jimi Hendrix

  13. #658
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    Quote Originally Posted by Magnum9987 View Post
    Is that the same quad cam motor you ordered a while back?

    Adding injector cleaner to the fuel once a month showed an improvement to 35mpg (US) for a couple of weeks.
    No, this is an SC pushrod engine on carbs so injector cleaner ain't gonna help... it's a jetting issue. Probably won't get around to installing the Polo4 until we've figured out a gearbox for it... maybe by March. Plus we'll have to go to 12v which I wanted to avoid.

    The Polo4 is 2.2 liter and runs 40mm Webbers, too.
    '62 356S Notchback Hotrod
    '64 VW Microbus 21 Deluxe
    '67 911S Das Geburtstagsgeschenk
    '68 911T Targa Sporto
    '68 Mercedes 280 SL
    '62 BMW 700 Sport
    '63 BMW 700 Cabriolet
    '72 BMW 3.0CSL
    '72 BMW 3.0CSA
    '70 914/6 GT

  14. #659
    Join Date
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    Location
    Porto - Portugal
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    The Getz is going in to the shop on monday morning, going to be converted to run on LPG.
    "Religious belief is the “path of least resistance”, says Boyer, while disbelief requires effort."

  15. #660
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    Californian by nature, living in Teggsas.
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    Last three tanks in our new Kia: 34,7mpg (6,29l/100km). Lots of highway driving though. Commute runs around 28-30mpg (7,8-8,4l/100km)
    Last edited by jcp123; 01-06-2012 at 09:41 PM.
    An it harm none, do as ye will

    Approximately 79% of statistics are made up.

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