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Thread: Wow... Poor MPG

  
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    LeeSportive's Avatar
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    Wow... Poor MPG

    I collected my 1.7CDTI astravan sportive last Tuesday an it appears to have an incredable thirst. I put £30 in last thursday an by the rate the fuel gauge is dropping ill be doing well to see 200miles from that £30 .

    Someone please tell me this will improve. Its just done 300miles overall so im hoping the mpg will improve loads once its loosend up a little.

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    Dan_GSI's Avatar
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    Your not carrying a heavy load are ya?


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    Richie Coupe's Avatar
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    WOW that doesnt sound good but i could be wrong!

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    Dont know if you have the fuel computer Lee but from my experience with a 1.7 6sp (5 dr) it is easy to use too high a gear and the fuel consumption does go way up. Try to cruise at 2900 rpm even if that means 4th gear. I have found an incredible difference and from a mate who is a VW mechanic he says this is quite common that changing up and keeping in the turbo band (I find 1800 to 2500 the thirsty band for the Astra) gives you acceleration but better to try and cruise outside of this band. In slow traffic on the flat or downhill, the higher gear can keep you below 1800 but at legal cruising speeds it does pay to keep the motor spinning around 2900 and not change up. Sounds crazy to me after 4 petrol Astras when the higher gear was always more economical but try it and see if it works for you too.

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    ZS's Avatar
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    You won't see any decent fuel economy until the first oil change. I like to recommend getting the oil and filter done about 5000 miles, helps the engine bed in better.
    2007 Metro Blue 5 door Mk5 Elite 1.7CDTI
    6th Vauxhall (4th Astra) in 10 years...plus a couple of other sheds...

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    LeeSportive's Avatar
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    Ive been out and about in it today an it does look like i will see about 250miles from my £30. Im not carrying any kinda of 'load' really also ive noticed that the van is begining to feel a little less tight now so hopefully once ive done the 5000mile oil and filter change i should be seeing nearly 300miles to £30 .
    I have heard before that keeping the engine spinning at about 2900rpm does improve fuel economy!!!!
    Has anybody else tried this Does it work?

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