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2.0 tdi MPG

Discussion in 'A3/S3/Sportback (8P Chassis)' started by Bongo163, Apr 26, 2006.

  1. Bongo163
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    Bongo163 New Member

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    [Apr 26, 2006]
    I'm consistently getting very low 40 mpg from my A3 2.0 tdi DSG. Even on long motorway runs.. Does this seem reasonable or can anyone suggest what may be wrong. cars done 63K miles.
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  3. beaker
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    beaker Member

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    [Apr 26, 2006]
    Heavy foot?

    Mine normally gets 48+ on motorway sometimes low 50's. In town its still pushing 40MPG.
    #2
  4. wilko
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    wilko Top Gear

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    [Apr 26, 2006]
    I get around 43 round town haven't done much motorway driving but when I have I have I have got a very low MPG simply bcos my foot gets very heavy!
    #3
  5. h5djr
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    h5djr Well-Known Member VCDS Map User

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    [Apr 26, 2006]
    I normally get around 48mpg from my TDI. I don't do very much motorway driving these days, but when I go on holiday to Austria via France and Germany my mpg goes up to around 52mpg. Virtually the whole of the journey is on motorway at around 80-90mph in France and around 100-110mph on the derestricted streches on autobahn in Germany.

    I think the key to this higher mpg is being able to maintain a fairly constant speed, something I try on the motorway in the UK but it's usually so busy it not easy.
    #4
  6. Amchlolor
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    Amchlolor Active Member

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    [Apr 26, 2006]
    I'm getting 40mpg,but I hardly ever get the chance to cruise.

    Mixture of slow moving traffic and foot-down country roads.

    40mpg looks good,in isolation,but it's still 9-10mpg less than my 1.9tdi A4,under absolutely identical driving conditions.

    Not a big deal,as I don't pay for the fuel,but a bit baffling all the same.
    #5
  7. Eeef
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    Eeef Lord of War

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    [Apr 26, 2006]
    [ QUOTE ]
    I'm getting 40mpg,but I hardly ever get the chance to cruise.

    Mixture of slow moving traffic and foot-down country roads.

    40mpg looks good,in isolation,but it's still 9-10mpg less than my 1.9tdi A4,under absolutely identical driving conditions.

    Not a big deal,as I don't pay for the fuel,but a bit baffling all the same.

    [/ QUOTE ]

    I would guess that the 20% power increase on your new car is probably responsible for the 20% decrease in economy... /ubbthreads/images/graemlins/fuck_you.gif
    #6
  8. Amchlolor
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    Amchlolor Active Member

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    [Apr 26, 2006]
    [ QUOTE ]
    [ QUOTE ]
    I'm getting 40mpg,but I hardly ever get the chance to cruise.

    Mixture of slow moving traffic and foot-down country roads.

    40mpg looks good,in isolation,but it's still 9-10mpg less than my 1.9tdi A4,under absolutely identical driving conditions.

    Not a big deal,as I don't pay for the fuel,but a bit baffling all the same.

    [/ QUOTE ]

    I would guess that the 20% power increase on your new car is probably responsible for the 20% decrease in economy... /ubbthreads/images/graemlins/fuck_you.gif

    [/ QUOTE ]

    You mean a 7% increase in power. /ubbthreads/images/graemlins/fuck_you.gif
    #7
  9. dickys3
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    dickys3 Moderator Staff Member Moderator

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    [Apr 26, 2006]
    See my other post. I drive mainly motorway and i'm getting 52mpg. I normally drive around 75 ish.
    #8
  10. Eeef
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    Eeef Lord of War

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    [Apr 26, 2006]
    Your A4 was 115 or 130? If it was the 130 it's actually 16.92 % based on the lowest dyno reading I've seen for an A3. 32.17% if it was the 115

    Back at ya...
    #9
  11. Amchlolor
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    Amchlolor Active Member

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    [Apr 26, 2006]
    [ QUOTE ]
    Your A4 was 115 or 130? If it was the 130 it's actually 16.92 % based on the lowest dyno reading I've seen for an A3. 32.17% if it was the 115

    Back at ya...

    [/ QUOTE ]

    Doesn't tally.

    You're saying I shouldn't believe the Audi's claim of 140bhp for the A3,and that it will actually be making more,but I should believe their claim of 130bhp is completely accurate for the A4 ?

    That doesn't make sense.

    If both of Audi's claims are equally inaccurate,then the increase in power between the '130' A4 and '140' A3 is still around 7%-8%

    A3 claimed 140bhp
    Actual 156bhp

    A4 claimed 130bhp
    Actual 144bhp

    Difference between 144bhp and 156 bhp = 8%.
    #10
  12. Eeef
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    Eeef Lord of War

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    [Apr 26, 2006]
    [ QUOTE ]
    [ QUOTE ]
    Your A4 was 115 or 130? If it was the 130 it's actually 16.92 % based on the lowest dyno reading I've seen for an A3. 32.17% if it was the 115

    Back at ya...

    [/ QUOTE ]

    Doesn't tally.

    You're saying I shouldn't believe the Audi's claim of 140bhp for the A3,and that it will actually be making more,but I should believe their claim of 130bhp is completely accurate for the A4 ?

    That doesn't make sense.

    If both of Audi's claims are equally inaccurate,then the increase in power between the '130' A4 and '140' A3 is still around 7%-8%

    A3 claimed 140bhp
    Actual 156bhp

    A4 claimed 130bhp
    Actual 144bhp

    Difference between 144bhp and 156 bhp = 8%.

    [/ QUOTE ]

    My figures were based on what I know. Of the A3s that have been dynod the lowest stock has been 152bhp, the highest was an almost unbelievable 165bhp.

    My old Golf 130 was dyno'd at 131bhp
    #11
  13. adamhill
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    adamhill New Member

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    [Apr 26, 2006]
    [ QUOTE ]
    See my other post. I drive mainly motorway and i'm getting 52mpg. I normally drive around 75 ish.

    [/ QUOTE ]

    Avg 56.5mpg on my trip round the M25 last Friday (Cambridge to Croydon)- /ubbthreads/images/graemlins/woohoo.gif very pleased although it was a clear run and little wind. Again, kept it to about 75mph (according to Road Angle which was about 82mph according to Audi Speedo /ubbthreads/images/graemlins/noidea.gif ). Had just polised car at the weekend mind you!
    #12
  14. mfspen
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    mfspen Member

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    [Apr 26, 2006]
    Very interesting.

    Are the torque figures quoted by Audi for the 2.0 TDI similarly conservative ?
    #13
  15. mikep
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    mikep Member

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    [Apr 26, 2006]
    My car averages about 50-55mpg on it's regular 100 mile round trips to Cambridge and that's doing 75-85 on the A14 and its remapped to 190bhp and 290lb ft.

    Even when really pushing it I've never seen below 42mpg.

    Maybe I'm just easy on the throttle?

    Most of the torque figures on the std 2.0TDi that I've seen are around 5% up on Audi's quoted figures, about 245lb ft or so.
    #14
  16. tinka
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    tinka Guest

    [Apr 26, 2006]
    off subject but a quick question mikep,

    what figures did you have at the wheels for your car,im asking as ive always been a little bit curious with my remap,

    when i had it on a rolling road they told me 132bhp at the wheels,no flywheel figs because of the auto,it should be around 175ish at the flywheel,but im not sure how to work out the losses,if i know what you had on yours ill have a better idea?.
    #15
  17. mikep
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    mikep Member

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    [Apr 26, 2006]
    tinka, reading straight from the Stealth dynoplot summary sheet:

    power at the wheels: 161.6bhp at 3843rpm

    power measured at flywheel: 189.2bhp

    power (corrected) 187.7bhp

    power loss(transmission, tyres etc): 27.6bhp (17.1%)

    max engine torque(corrected): 293.9lb ft at 3010rpm

    Max engine speed reached: 4597rpm

    Temp Min Max 21/25 celsius

    Barometric Pressure: 1028Mb

    That's Revo Stage 1, Stage 2 is 203bhp and 287lb ft, but I don't have the detailed plot for that run. I tend to use Stage 1 most of the time as its the best balance of performance and economy (with diesel at 95p a litre!)

    Hope this helps...
    #16
  18. tinka
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    tinka Guest

    [Apr 26, 2006]
    mikep,

    thanks very much thats a great help,
    as i feared,with transmission losses at roughly the same as yours,im getting 159 bhp,which could mean ,as i suspected the remap never took,or the rolling road test wasnt accurate,they only gave approx flywheel figs,and they was'nt to familiar with the dsg,it was done at power engineering in uxbridge by the way,

    i think im gonna have to find a good rolling road and have it tested again,unless i go back to rsd,which was a fair distance,im going to have difficulty knowing if it ever loaded. /ubbthreads/images/graemlins/ok.gif
    #17
  19. imported_RedSportback
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    imported_RedSportback Guest

    [Apr 26, 2006]
    Am getting around 50mpg mainly foot down open country road driving
    #18
  20. one_team
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    one_team Member

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    [Apr 26, 2006]
    >Had just polised car at the weekend >mind you!

    ...I swear cars KNOW when they're been cleaned you know!

    My cars always seem to run better and be more efficient when cleaned and polished!

    /ubbthreads/images/graemlins/wink.gif

    /ubbthreads/images/graemlins/wink.gif

    One Team
    #19
  21. god_thats_quick
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    god_thats_quick Numptie of the highest order

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    [Apr 27, 2006]
    [ QUOTE ]
    >Had just polised car at the weekend >mind you!

    ...I swear cars KNOW when they're been cleaned you know!

    My cars always seem to run better and be more efficient when cleaned and polished!

    /ubbthreads/images/graemlins/wink.gif

    /ubbthreads/images/graemlins/wink.gif

    One Team

    [/ QUOTE ]

    so it's not just me that thinks that... /ubbthreads/images/graemlins/laugh_roll.gif
    #20
  22. arthurfuxake
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    arthurfuxake Controversial & Contradictive

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    [Apr 27, 2006]
    And I thought I was the only one that thought that!
    #21
  23. wilko
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    wilko Top Gear

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    [Apr 27, 2006]
    I think that too!!

    Saw diesel at 99.9ppl this morning - in Nottingham.
    #22
  24. The Slug
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    The Slug Active Member VCDS Map User

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    [Apr 27, 2006]
    Shell Extra is 96.9 here, btw i get 45-50mpg on my 1.9TDi quatty and 50mpg on 2.0TDi
    #23
  25. IanMcA3
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    IanMcA3 Member

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    [Apr 27, 2006]
    I think mine is below most of these MPG's. Long term the DIS is showing 41.6 - most journeys hover around the 42 mark.

    Furthermore, when I changed to 18's the economy certainly got worse - unsprung mass?
    #24
  26. cosmicblue
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    cosmicblue Member

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    [Apr 27, 2006]
    [ QUOTE ]
    I'm consistently getting very low 40 mpg from my A3 2.0 tdi DSG. Even on long motorway runs.. Does this seem reasonable or can anyone suggest what may be wrong. cars done 63K miles.

    [/ QUOTE ]

    With the REVO remap I get a consistent 55mpg (DIS) @75-80 on the motorway for my 75 mile commute. Brim to brim refills over the last 9,000 miles since the remap was done at the 6,000 mile mark show the real consumption to average 48.9mpg.

    Seeing as it goes like F*** now too, I reckon that is PDG. /ubbthreads/images/graemlins/dancing.gif
    #25
  27. stewarta13wsb
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    stewarta13wsb Member

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    [Apr 27, 2006]
    Over £1 per litre here already /ubbthreads/images/graemlins/soap.gif don't get me started.

    and I only average 38.5 but lots and lots of short trips (my Rav 4 only managed 26 - although it was petrol!)
    #26

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