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Thread: Real life MPG's

  1. #1
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    Real life MPG's

    I am still some way of ordering my next car and one factor I considered this time was the MPG. I chose a car which gives me appx 45mpg against a book figure of 62.8, just 71.6%. A car which will cost me over £700 more in running costs than I calculated. I expected something like 55mpg.
    I had looked a Fiesta Ecoobost, Powershift and Volvo V40 Powershift which claim 57.7 and 72.4 respectively and has discounted a Focus 1.6 and Astra 2.0 diesel in view of the stated 44.8 and 48.7.
    Research from a couple of websites suggested I could expect to get the following:-
    Fiesta 33.6 against a claimed 57.7, just 58%
    Volvo 47 against a claimed 72.4 just 65%
    Astra 41.7 against a claimed 48.7 , 86%
    Focus 43.1 against a claimed 44.8, 96%.

    A pattern is emerging which suggests that newer technology including stop start produces better figures on paper but not only are these are simply not achievable in reality, in some cases they are reaching the realms of fantasy!
    This point is borne out as my old Golf returned 41 against a claimed 47 (87%) whereas the new Golf with stop start, whilst claiming 56.5 would return around 41, the same as the previous model.

    The moral for me is not to take the figures at face value. I will spend another £700 on diesel over 3 years than I expected to, so next time round a little more research will be the order of the day.
    Last edited by paul1234; 05-04-14 at 16:43.

  2. #2
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    I was impressed with the very peppy Golf (1.6 diesel bluemotion DSG) I had as a hire car a few years ago. It went well but, even though I was driving it like you do when you are not paying for the fuel, it still did a true 60mpg over 240 miles. I reckon I could have got 65-70mpg if I was driving it carefully. Admittedly most published figures are way out, but some aren't.

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  4. #4
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    I find What Car?'s calculator to be pretty accurate, although for my comparison spreadsheet (comparing 150+ used & new cars). I use the simple formula of the Urban mpg x 1.1
    http://www.whatcar.com/truempg/my-true-mpg

    You can't really go off what other people reviewing the 3-cylinder cars say either, they are designed to be economical and so should be driven as such.
    unfortunately due to the nature of the 3-cylinder you have to thrash them to get anywhere fast and therefore your economy goes through the floor.

    The best way of achieving (or getting close to) the claimed economies is by driving using advanced driving techniques - the Police Driver's Handbook (Roadcraft) is what I have used to become a safer driver.
    http://www.amazon.co.uk/Roadcraft-Th...6774904&sr=1-1

    When I use the techniques all the time I can achieve economy figures around 55mpg on the motorway and 45mpg around town, I get bored though and with so much power under my foot, I just thrash it!
    Motability Car History
    05/09-05/12; Nissan Qashqai 1.5 Diesel Tekna; 36,500 miles; avg 41.1mpg
    06/12-07/15; Ford C-Max 2.0 Diesel Titanium Powershift; 35,400 miles; avg 37.8mpg
    07/15-09/17; Skoda Octavia 1.6 Diesel SE-L DSG; 28,200miles; avg 43.9mpg
    09/17-Present; VW Touran 1.4 Petrol SEL DSG; 11,600miles; avg 35.9mpg (28.6 - 43.9mpg)

    Click here to send me an email with any private Motoring questions you may have. Replies usually within 48hrs

  5. #5
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    I used a combination of What car and Honest John. My current car has 184PS and 380nM of torque and is driven gently 98% of the time. It returns a little less than the combined what car/honest john stats which is a good stating point. The Ford Ecoboost looks great on paper but the jury is still out regarding its real life MPG and the Volvo D2 similarly. The Golf 1.6d Bluemotion states an eye watering 88mpg, but 55-60 seems the norm.
    If you read the criteria for government MPG's below there are many criteria which do not apply to everyday life, such as a 20-30c temperature range and Audi were also told to change one of their adverts after claiming an A3 would achieve 69mpg. Most adverts now state a driver may achieve less mpg in real conditions. What is true is that cars are becoming more economical on the whole, and of course a lower mpg and CO2 means lower tax post DLA.

    http://www.dft.gov.uk/vca/fcb/the-fu...ing-scheme.asp
    Last edited by paul1234; 06-04-14 at 09:53.

  6. #6
    Senior Member phaedra's Avatar
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    Brand new Qashqai 1.5dci diesel, claimed urban is 67.3 in reality I'm getting around 36 to 38mpg on short (5 to 10mile) journeys. In comparison my previous Honda CRV with the 2.2 diesel was quoted at 34.9 and used to get 35 to 37mpg on the same journeys.

  7. #7
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    Quote Originally Posted by phaedra View Post
    Brand new Qashqai 1.5dci diesel, claimed urban is 67.3 in reality I'm getting around 36 to 38mpg on short (5 to 10mile) journeys. In comparison my previous Honda CRV with the 2.2 diesel was quoted at 34.9 and used to get 35 to 37mpg.
    This does confirm my experience too, 33 from a Saab, quoted 38, 41 from a VW, quoted 47 but only 45 from a BMW, quoted 63. All driven in the same conditions. If you consider the official urban cycle is just 2.5 miles it does beg the question, in fact many questions.

    For those who are members, Which also provide Real Mpg's.

  8. #8
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    Quote Originally Posted by paul1234 View Post
    This does confirm my experience too, 33 from a Saab, quoted 38, 41 from a VW, quoted 47 but only 45 from a BMW, quoted 63. All driven in the same conditions. If you consider the official urban cycle is just 2.5 miles it does beg the question, in fact many questions.

    For those who are members, Which also provide Real Mpg's.

    The AA reported that in 2001 the difference between real and official mpg's was just 8% but in 2013 was 21% and a trend has developed where the more economical a car is to run, on paper, the greater the discrepancy between its theoretical and actual fuel economy.
    This is a trend I, and others (including some on this forum), are seeing in real life.

  9. #9
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    I am also a member of Which? - did you know that they have campaigned for a new testing procedure to be introduced, it's going to be based on actual roads rather than labs but it isn't due for a few years yet.

    http://www.telegraph.co.uk/motoring/...my-claims.html
    Motability Car History
    05/09-05/12; Nissan Qashqai 1.5 Diesel Tekna; 36,500 miles; avg 41.1mpg
    06/12-07/15; Ford C-Max 2.0 Diesel Titanium Powershift; 35,400 miles; avg 37.8mpg
    07/15-09/17; Skoda Octavia 1.6 Diesel SE-L DSG; 28,200miles; avg 43.9mpg
    09/17-Present; VW Touran 1.4 Petrol SEL DSG; 11,600miles; avg 35.9mpg (28.6 - 43.9mpg)

    Click here to send me an email with any private Motoring questions you may have. Replies usually within 48hrs

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