1. This site uses cookies. By continuing to use this site, you are agreeing to our use of cookies. Learn More.

A5 Cab, 2.0TDI, Very poor MPG?

George Surrey May 14, 2018

  1. George Surrey

    George Surrey New Member

    10
    0
    1
    I've picked up a 2011 A5 Cab with the 2.0TDI 168BHP engine. The engine isn't particularly inspiring but it's quick enough for me.

    I was really hoping for better economy as i'm only getting around 36MPG on average, my daily drives are generally town driving with some bypasses and no motorway but even still I was expecting at least 40MPG

    I had an A6 2.0TDi 177 which returned 40MPG n average and a 59 plate A4 2.0TDI 140 which got me well into the upper 40s on average!

    Seems really low for this engine? Can't find any faults with the car and I am a careful driver?

    Anyone else had anything similar and or any tips?
     
  2. V6Tom

    V6Tom Member Team V6 Audi A5 quattro TDi S tronic Coral Blue Coupe

    47
    12
    8
    Dosent sound good. I get 40 easy in my 3.0 tdi
    [​IMG]

    Sent from my SM-G935F using Tapatalk
     
  3. George Surrey

    George Surrey New Member

    10
    0
    1
    That's mad.

    The "quoted" combined for the 3.0 Cab is 41.5.

    For mine, it's 49.6! Yet in the real world your getting 10MPG more on average than me, doesn't make sense?

    Maybe I should get it mapped.
     
  4. V6Tom

    V6Tom Member Team V6 Audi A5 quattro TDi S tronic Coral Blue Coupe

    47
    12
    8
    Sounds about right, tbh i did 29 to work this morning because i opened her up abit, but the 40 odd i got the other day was a nice calm drive home and not alot of stopping tbh, a rare clear drive home.

    put it in sport and ill hit 10mpg easy. but i alot think good mpg form a 3.0 is because its not working as hard to move the car? as a 2.0 would be.
    i could be wrong
     
  5. George Surrey

    George Surrey New Member

    10
    0
    1
    Yeah think you're on the money there, when cruising your 3.0 is prob hardly using anything. Where as 2.0 is working overtime to gain speed.
     
  6. V6Tom

    V6Tom Member Team V6 Audi A5 quattro TDi S tronic Coral Blue Coupe

    47
    12
    8
    exactly and when i put my foot down i might aswell have a hole in the fuel tank lol
     
  7. kanecullen89

    kanecullen89 Active Member

    589
    165
    43
    I would imagine that the 2.0 tdi would have more than enough torque for it to be a relaxed drive with good MPG.

    As @V6Tom above, my 3.0 tdi gets mid 40's on average. I do probably 80% town driving so I would exect yours to be much better.

    Is yours quattro because that can have an effect on MPG, but ours are quattro too so i'm not sure.
     
  8. V6Tom

    V6Tom Member Team V6 Audi A5 quattro TDi S tronic Coral Blue Coupe

    47
    12
    8
    My one is a quattro. fully stock for now no map or anything, im planning on a delete for multiple reasons. and a map soon. my friend with a fwd 3.0 gets slightly better mpg but im talking 3-5 at most

    also taking into account yeah 2.0 should be strong enough, the car dose weigh 2 tonne ish i think so its alot of metal to move
     
  9. George Surrey

    George Surrey New Member

    10
    0
    1
    @kanecullen89

    Not quattro just standard 2WD, it is a drop top which I know adds weight but even so, just so far from the quoted
     
  10. George Surrey

    George Surrey New Member

    10
    0
    1
    Lol definitely worth it though, those 3.0's are insane!
     
  11. V6Tom

    V6Tom Member Team V6 Audi A5 quattro TDi S tronic Coral Blue Coupe

    47
    12
    8
    Have you run a diagnostic check on it ? Might be some errors that dont show up normaly ? Try a map. Might get the extra mpgs for you

    Sent from my SM-G935F using Tapatalk
     
  12. George Surrey

    George Surrey New Member

    10
    0
    1
    Haven't yet, not had the car long you see, had a full-service last week and no issues found but not sure if they ran like an OBD or equivalent.

    Might take it to an Audi specialist to diagnose, if nothing comes back will prob try an economy remap. they're pricey though got my last A4 done and he had to crack some kind of Audi lock on the ECU!
     
  13. V6Tom

    V6Tom Member Team V6 Audi A5 quattro TDi S tronic Coral Blue Coupe

    47
    12
    8
    I hear Darkside Dev are reasonable with the map prices. and probably could advise on other ways of improving the mpg.
     
  14. George Surrey

    George Surrey New Member

    10
    0
    1
    Got to the bottom of the issue! Just me being thick!

    I was basing it off the on board computer 1, which only tracks mpg on that particular journey so it was starting at 20mpg and then going up slowly but on a short journey would not reflect average MPG.

    I should have been using computer 2 which tracks mpg across total journeys until it's reset! Since using this computer I'm averaging 40mpg which should increase the more I drive.

    I've seen a few people reporting similar issues so I wonder if they are just using the wrong computer.
     
  15. DrEskimo

    DrEskimo Well-Known Member

    2,483
    2,360
    113
    Even that will be slightly inaccurate. Tends to over estimate unfortunately.

    The only true way is to note mileage when you are next empty. Fill to the top and keep record of number of litres used to fill. Then do the same again when you next need to fill up.

    ...or just use something like the Fuelly app to do it...!
     
  16. George Surrey

    George Surrey New Member

    10
    0
    1
    Yes think i'm going to have to, after tracking around 200 miles on the long term computer i'm still getting 36MPG! So if thats overestimated then the fuel economy is terrible! I have been driving very very economically, using start/stop etc seems insanely low!

    No idea what the issue could be.
     
  17. DrEskimo

    DrEskimo Well-Known Member

    2,483
    2,360
    113
    If you are just doing short trips around town, then I don't think I would have much expectation for higher MPG...
     
  18. George Surrey

    George Surrey New Member

    10
    0
    1
    Yeah fair enough, I just got much higher on same journeys with both my old A4 2.0TDI (140BHP) and A6 2.0 TDI (177BHP). Which made me expect a similar amount on this car.

    I even had an 04 C Class with a 2.7CDI Auto and that used to get around 38MPG on same journeys, that thing was a beast as well!

    Maybe your right, remap here I come!
     
  19. DrEskimo

    DrEskimo Well-Known Member

    2,483
    2,360
    113
    I'm probably not :p

    Only thing I can go off, is that I would expect around 27ish MPG on my old 2009 A5 2.0TFSI for that type of journey, so 36MPG from a diesel version sounds about the right differential...!

    Remap probably is the way forward in any case. Perhaps, as you suggested, it's worth getting it checked over by a specialist before remapping, just to sign it off with a clean bill of health?

    Best of luck with it!
     
  20. George Surrey

    George Surrey New Member

    10
    0
    1
    Update

    Had my audi mechanic looks at the car yesterday

    Diagnostics didn't return any issues, however, Air & Fuel filters had not been changed/cleaned for 2 years so have swapped them.

    Also tyre pressures were out of kilter and have been corrected.

    No recorded change yet but will wait and see!
     
  21. V6Tom

    V6Tom Member Team V6 Audi A5 quattro TDi S tronic Coral Blue Coupe

    47
    12
    8
    With new filters i would imagine a improvement in your mpg. Keep us posted !

    Sent from my SM-G935F using Tapatalk
     

Share This Page