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  1. #1
    Learner Driver meggs88's Avatar
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    Dec 2017
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    1.4 turbo s/s 30mpg????

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    Hi, just got a 2012 1.4 turbo petrol with start/stop and it is only achieving 30mpg mainly round town. i know it is due a service but can't see that making much difference.

    It is on a a full set of winter tyres so hopefully once I change them mpg will improve.

    Is this normal mpg for the 1.4 turbo??

  2. #2


    2000rpm's Avatar
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    I'm not surprised. Winter mpg is usually poor for most cars.
    My wife's little 1-litre town car is only managing 40-45mpg at the moment. Out of town in summer the same car can achieve 60-65mpg.

    My (2.8) Insignia will only manage about 15mpg in town at this time of year although I don't take it in town very often - I use a smaller car.
    Due to the prolonged spell of cool weather all our cars are showing very poor mpg.

    In winter, engines take longer to warm up and a engine not up to temperature uses much more fuel.
    Also we use more lights, wipers, rear window/mirror heating wires, fan-heaters and blowers/demisters (which use the aircon) which put extra demand on the engine.
    And cold air is more dense than warm air so air resistance increases by perhaps 10% in winter although air resistance is less significant the slower you go.



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