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Probably asked, answered MPG

Discussion in 'General Mercedes-Benz Related Discussion' started by Zolly, Jul 29, 2020.

  1. Blobcat

    Blobcat Moderator

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    Your Mercedes:
    R171 SLK280 3.0, Land Rover 110 County SW
    People want to pay less VED so manufacturers "met" the rules and made cheaper VED cars, customers then complained they can't get the MPG and governments complained because they're losing out on revenue...
     
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  2. OP
    Zolly

    Zolly New Member

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    Blimey, didn’t think we would go so in depth. I was very very happy with my w204 just at the next MOT I would have had to spend more than the value of the car+ I got a great offer for PX

    I do exactly the same journeys Urban wise except rather than 35-40 I get 31-33 I don’t floor it never have with cars.unless it’s a c auto box or something else that is killing my consumption? Never use AC , I don’t know ..What are the main culprits, apart from tyre pressure , AC stop start, braking excessively and hammering the accelerator? I have the car set to economy with the suspension etc. One last point this car has done 127K 4 yrs old AA inspected no obvious defects
     
  3. Craiglxviii

    Craiglxviii Senior Member

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    W215 CL500 Motorway Queen; W251 R320L Familybenz, S211 E320 Avg Designo Edition now sadly missed.
    Feel free to use AC. On your car it will run constantly anyway, the only difference is whether it inputs cooled air to the HVAC system or not :)
     
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  4. Blobcat

    Blobcat Moderator

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    Your Mercedes:
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    Pump the tyres up to the maximum that you’re comfortable with. Get up to speed smoothly, don’t open any windows or sunroof and don’t brake if at all possible.
    You’ve burnt the fuel to get up to speed so converting it to heat via the brake discs is just wasting energy.
    Set your cruise at 65 and drive as smoothly as possible.
    Empty any junk from the car
     
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  5. Craiglxviii

    Craiglxviii Senior Member

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    W215 CL500 Motorway Queen; W251 R320L Familybenz, S211 E320 Avg Designo Edition now sadly missed.
    And tailgate every wagon you can for as long as possible ;)
     
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  6. LostKiwi

    LostKiwi Senior Member

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    Your Mercedes:
    '93 500SL-32, '01 W210 Estate E240, 02 R230 SL500 (Malcolm Spec), 04 Smart Roadster Coupe
    That was how I managed to get 38mpg from our 2.6l petrol E class...

    Really really boring though.....
     
  7. Dean Fletcher

    Dean Fletcher Senior Member

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    Sounds like my kind of driving John :)
     
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  8. Craiglxviii

    Craiglxviii Senior Member

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    W215 CL500 Motorway Queen; W251 R320L Familybenz, S211 E320 Avg Designo Edition now sadly missed.
    You and every Leaf driver!!
     
  9. davidsl500

    davidsl500 Senior Member

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    Your Mercedes:
    R172 250CDI, R129 SL500 Gone...
    I've only ever used published mpg figures as a means of comparing different cars / engines. I've never expected to achieve them... It does help if the Manufacturer doesn't cheat though.....I mean, beyond the normal cheating..
     
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  10. BillyBoy

    BillyBoy Senior Member

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    Only applies to current range cars I think, but the WLTP figures are a lot more realistic. WLTP for my car is 36.6 - 38.1, and over the first 1,400 miles, it has averages 37.2 mpg. Due to lockdown and no commute, that has included a lot of short journey urban driving, so I suspect it will go up a bit over time.
     
  11. sonic

    sonic Senior Member

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    Your Mercedes:
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    We have had two 171 SLK200K's with the 1800 M271 engine. We live in a semi rural area normal consumption 30-32 mpg. On a long motorway run we have had up to 38 mpg.
    Replaced it with a 2016 SLC250d now getting 45mpg overall. Long motorway runs it will manage 60 mpg. Road tax is £30pa against £300 for the SLK.
     
  12. s5tuart

    s5tuart Senior Member

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    Not bad for 3 litre V6 thats 5 metres long and weighs almost 2500kg


    A776E083-350B-4AB6-B289-E49AF95898FE.png
     
  13. BillyBoy

    BillyBoy Senior Member

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    Or my 3 litre straight 6 :D Screenshot_20200712-213908.png
     
  14. grayb

    grayb Senior Member

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    I would so like a 400d... Still too much money, unfortunately!
     
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  15. BillyBoy

    BillyBoy Senior Member

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    It'll be worth the wait when you can afford it though. They are so nice to drive. Funnily enough, and maybe by design, they don't feel that fast at first, but unlike my 220d, there just seems to be more and more power as you push the accelerator down, and it doesn't fade away as you get faster and go up the gears - just keeps pulling and pulling :cool:
     
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  16. Wighty

    Wighty Senior Member

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    Your Mercedes:
    W211/E320cdi/2009 and CLK200k 2009
    That description has just made me want one of them now buddy :D
     
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  17. OP
    Zolly

    Zolly New Member

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    Well Just a little update . As Blobcat said I had forgotten about my windows which are invariably open all the time and on checking my tyre pressure it was way to low.
    Once these are done we’re sorted my MPG came up by an extra 4mpg taking it to an average of 35 which I can live with .

    What I have found and surprisingly was a nice one. Is that even though it’s a 180+ HP engine it really pulls more so than my W204 diesel ever seemed to do. Like I said it’s years since I last drove a petrol so I can’t really compare. But thanks to this forum I am a relatively happy bunny

    Thanks
     
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