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Thread: Cruise control and MPG

  1. #1
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    Vehicle : Vectra

    Trim : SRi

    Engine : 1?? - Teapot mapped

    Year : 2006

    Mileage : 125000

    Default Cruise control and MPG

    Having now got a car with cruise control, I use it quite frequently. On the dual carriageways and also when I get in a 30 limit - leave it in 3rd and then forget about drifting over 30 and risk getting a ticket.

    So was just wondering, is cruise control good for your consumption as it provides a steady speed?

    Do you use yours much?
    Last edited by golfpro; 19th June 2012 at 12:10.

  2. #2
    Regular Member Chris SRi's Avatar
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    Depends... CC is focussed more on staying at the set speed rather than economy. So if you were going up hills etc then you'd be using more fuel as the CC would be trying to stay at the set speed.

    If you were on flat roads then it would probs be the same as normal driving - although it doesn't seem to let the engine cut the petrol when your foot is off the accelerator.

  3. #3
    Regular Member krazylegz's Avatar
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    I find my mpg is a lot better with CC on as I tend to start creeping up to the wrong end of 80 without it

    Sent from my iPhone using my fingers n thumbs

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    I love cruise control on long motorway journeys, I don't know if it improves fuel consumption... I'm going to make an educated guess and say that it doesn't per se. However it does fix your speed, so if you find that you tend to have a bit of a lead foot or you constantly let the car drop down in speed and then accelerate fast back up to speed, having cruise control on will stop you from going over the desired speed (saving petrol) and stop you from dropping down in speed and accelerating back up again (saving more petrol).

  5. #5
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    Default

    I had my cc on when i went to skegness, i got 440 miles out of a tank. Didnt have cc on the way home and got 425miles on a tank, mine is a 1.8 non vvti.

  6. #6
    Regular Member rich r's Avatar
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    As above - if you're not very good at maintaining a steady speed, then cruise control will be better for economy. You could of course learn to control your right leg a bit better On the flat, there's nothing in it, apart from the psychological effect of not feeling the need to overtake things as you're generally more relaxed when on cruise.

    On hills, it's definitely better to turn cruise off. It tends not to drop to idle when descending hills like you would without it, and obviously it can't change down a gear (if you've got a manual gearbox) if required, so you might find yourself caught out and have to take over quickly. Depends on how big the hills are where you live obviously!

  7. #7
    Regular Member Даниил's Avatar
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    Default

    i would say it does save fuel i once got 28 mpg out my 4.9 v8 e39 m5. i did 60 miles using nothing but cc.

    they other day i got into an argument with my mate he thinks costing down hills saves fuel when it don't

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