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Thread: The MK4 - miles to a tank (pref on the 1.8)?

  
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    Kev.'s Avatar
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    The MK4 - miles to a tank (pref on the 1.8)?

    Last time i fuelled up i did so after using 1/4 tank on town driving, 30mph zones, traffic jams etc & got 30.75mpg (i've a 51 plate 1.8 SRI that's covered 111k but appears to have F.S.H.)

    Just done my first full tank.

    Driving was quite reserved with no real blasts
    Was mainly 6 mile trips to work in 50/60mph zones
    Maybe 1/4 of the distance covered was town driving in 20-40mph zones
    No real jams.

    Fuel light came on today, covered about 7 mile & then fuelled up. All in all i did 327.7 miles which worked out at 33.67mpg


    An improvement, but also a disappointment if i'm honest. I don't know how reserved i've got to be to get the 35/37mpg quoted on various sites. I can't see how i could be any more reserved.

    I'm carrying a few fault codes...

    P0170 = Lean exhaust or rich exhaust. This is the air fuel ratio, which could be too rich or too lean.

    P0704 = Clutch switch input circuit, high input.

    P1555 = Total position sensor, load signal, not plausible with engine load.
    If they're likely to have anything to do with it

    Plus i noticed one tyre was a bit soft the other day, so don't know how much of a difference that'll have played as well.

    £44 after 2 weeks lol. I miss the diesel in a way lol

    Anywho, last time, i got questioned on how i worked out mpg, so here's a shot....

    A, B, C, E should be obvious

    D = pence per litre
    F = total miles covered
    G = litres added
    H = mpg


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    kervaig's Avatar
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    Figures are very similar to what I was getting in the 2 years I owned a 1.8 coupe. Had an ACT for nearly 4 years now and there's surprisingly not that much difference between the two for "normal" driving.

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    I get about that mate with my 1.8 sport, and a tad over 30 when thrashing it, if you do mainly motorway driving and keep it at a steady 70 you'll get about 37/38 maybe closer to 40 on occassions, not bad considering 1.4 and 1.6 bring similar mpg

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    I get 28mpg no matter how i drive my car and no matter what type of journey it is, i think my car is over fueling and i should really get it looked at but dont have the time or the money to.

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    my 1.8 coupe did 290 miles to a tank, my gsi is better on fuel.
    MR2 MK2 G-Limited
    ASTRA LINEA ROSSA

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    Aye, my 1.6 SXi uses about the same (if not more) fuel than my old Coupe Turbo.
    Previous Astras: 1994 Cesaro 1.8 16v | 2002 SXi 1.6 16v | 2001 Coupé 2.0 Turbo | 1999 LS 1.6 16v
    Other Vauxhalls: 2001 Vectra 1.8 16v| 2003 Vectra GSi 3.2 V6 | 2005 Signum CDTi 150

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    Its appalling what it achieves aint it?

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    Quote Originally Posted by franny View Post
    Its appalling what it achieves aint it?
    Yep, but i love it

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    I used to get about 360ish miles to a tank on a run in my 1.8 and about 320ish normal driving.

    The SRI-T has returned an average of 33mpg over the 1600miles ive had it which im more than happy with considering
    SRI TURBO + COURTENAY CS3 =

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    I know mines not a 1.8, but I am getting 230miles for 30 pounds on my 2.0 ecotec, so I guess thats about 335 miles to a full tank. Mind you, it's not fun trying to keep to 50mph, or below all week She gets a good thrash at the weekend though thankfully, so then I cut my mpg in half!

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