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Poor MPG on 1.6TDI Sport!!!

Discussion in 'A3/S3/Sportback (8P Chassis)' started by PaulAshcroft01, Feb 12, 2013.

  1. PaulAshcroft01

    PaulAshcroft01 New Member

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    I picked up a second hand 1.6TDI A3 Sportback, 59 plate, one of the main reasons for choosing this model was the attractive MPG that I was supposed to get with the car! I travelled over 100 miles with mainly motorway but a varied journey. I only got 48 MPG for an average of the journey, I was expecting at least 55 ish!!!!

    Is this normal for the engine?

    Any advice would be appreciated!
     
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  3. RedDejavu

    RedDejavu Well-Known Member

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    they say its not that economical as Audi claims. Did you read any reviews prior to buying the car?
     
  4. NHN

    NHN Retrofitter - Audi - VW - Skoda - Seat
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    Varied as in lead foot at times & stop/start?
     
  5. PaulAshcroft01

    PaulAshcroft01 New Member

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    Not in depth reviews, no! With Audi advertising an average of 68MPG I presumed I would get there or there abouts! Not 20MPG less!

    i haven't used a full tank of diesel yet so will record the actual miles from a full tank.

    The car is due for a long life oil change in 4k miles but might do it now, would this make a big difference?
     
  6. PaulAshcroft01

    PaulAshcroft01 New Member

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    I didn't go over 80 on the motorway part of my journey. It was too cold for start / stop to be activated!

    maybe it's my driving style, I normally drive a 2001 Audi A4 2.0 petrol. Even this car gives me 35MPG on average!
     
  7. MrLapou

    MrLapou Well-Known Member

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    Advertised MPG should be taken with pinch of salt.
    IMHO, for good mpg from a car this size/weight, engine needs to develop around 140bhp.
    Sadly you've been caught out...

    Landrover Evoque Diesel Auto is claimed to give around 44mpg, but real world figures dips to around 32mpg...

    My previous car Mini Cooper Diesel Auto returned around 50 ~ 55 mpg, depending on weather temp.

    Do you think the new A3 1.6 TDi will achive 74mpg in normal driving????? I doubt it...
    Audi A3 1.6 TDI Sport first drive review Review | Autocar
     
    #6 MrLapou, Feb 13, 2013
    Last edited: Feb 13, 2013
  8. MrLapou

    MrLapou Well-Known Member

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    New air filter will make a bigger improvement.

     
    #7 MrLapou, Feb 13, 2013
    Last edited: Feb 13, 2013
  9. RedDejavu

    RedDejavu Well-Known Member

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    2-3mpgs? :p Never heard of any diesel engine to benefit a lot from fitting aftermarket filter unless BT is fitted.
     
  10. johnnythepie

    johnnythepie Well-Known Member

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    Audi are quite prepared to give a 30% leeway on the consumption figures.With a quote of 68mpg, i would expect in real time about 40.And the oil change will make no differance either.Didnt on my 2.0 170 a4
     
  11. IceHanger

    IceHanger Active Member
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    Cold weather, old diesel, old oil, DPF burn off's, all contribute to sh*te MPG. Diesels also take about 15K to free up and run best.

    MPG tests are done on a roller with simulated Coefficent of friction so it's a stick in the ground at most, If your light on the loud pedal and use the fuel cutoff as much as possible (pre empting the need for stopping by coming off the throttle early) you should be able to get the combined figure.
     
  12. jimmo

    jimmo Member

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    In my highly uninformed opinion, the 1.9 TDi would have been the one to go for. The 1.6 might be a tad underpowered, which means you end up using a bit more right foot than you realise. Pals of mine with the 1.9 diesel lump in the Golf's are returning very impressive mpg numbers.
     
  13. MxGaza33

    MxGaza33 Member

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    Driving to and from work I was amazed how much of a difference the outside temperature makes. Also if your new to the car it might come up a bit once you get used to where its MPG sweet spots are!
     
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  14. Mikemc

    Mikemc Scooby Slayer
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    I've recorded an average of 62mpg in my a3 2.0tdi DSG 140 over a 100 mile round trip consisting of 75 miles motorway 25 back roads
     
  15. Boon

    Boon Active Member

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    My MPG has gone down a little since the remap due to the right foot being heavy! But am still returning 50+ when careful on motorways

    2.0TDi PD 140 (180ish)

    As the temperature this time of year is cold/dense there will be more air being crammed into the engine, this in theory means that the engine is likely to be adding more fuel... Or am I talking tosh?!!
     
  16. autolatry

    autolatry Active Member

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    I agree with this. It's a small engine for a relatively heavy car.
    Big engines FTW. When I'm on an economy drive it's 2nd, 4th, 6th without reving past 1500
     
  17. Zak0123

    Zak0123 Active Member

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    In my 1.6TDI I get on average 60MPG on my commute to and from work, 30 miles motorway and some back roads, all at about 50-60mph. From experience you won't see anything near that at 80mph! Try drop it down to 70, apparently some engines use 20% more fuel at 80.
     
  18. southylad

    southylad Active Member

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    that is low mate i can get 47 out of my 2.0 tdi
     
  19. PaulAshcroft01

    PaulAshcroft01 New Member

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    Thanks for all the comments and advice. I have got it booked into audi for a diagnostic but from reading your posts I am guessing they won't find anything wrong. I will change the oil and air filter and see if I get squeeze anymore out of it!

    i am just a bit miffed with audi falsely advertising these figures! Naive I know! Rant over!
     
  20. BigBrizo

    BigBrizo Member

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    try laying off the pedal a bit.

    what revs are you sitting at ? over 2000 Id imagine

    try dropping your speed of 80mph to 60mph or around 1600-1700 revs.

    try that over course of a tank and work out your avg
     
  21. Alva78

    Alva78 Member

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    Also try millers diesel treatment for 10 fill ups it will give you a bit more bhp and clean the injectors aswell i use it on all fill-ups.
     
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  23. MrLapou

    MrLapou Well-Known Member

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    Do not waste time or money changing oil.. Do you think you'll recoup the cost in fuel saving?
     
  24. Zak0123

    Zak0123 Active Member

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    +1. Same with people getting a remap to improve mpg alone, crazy.
     
  25. JCMCN

    JCMCN Member

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    Unlucky purchase. I had a right set to with Audi over my 1.6TDI. I got one when they first came out. Ran it for two years and was more than pleased to see the back of it.
    The computer may tell you it's returning 50+, I can assure you when measured at the pump (Which I kept record for EVERY tank fill) you will be lucky to get 50!! Mine averaged 48MPG over 72,000 miles !!! nothing like the book says. I had it checked by Audi dealer 3 times, and once by an Independent and all said engine was running perfect. The car was serviced by Audi regular, Tyres and alignment changed and checked regular, I even changed driving styles to see if it made any difference. I did run it with 245 x 45 x 18" wheels and that added about 5mpg!!
    I now have a 2.0TDI 170 BE S-line DSG....MPG...consistently 50+mpg along with some exciting driving :jump:
     
  26. John Paterson

    John Paterson New Member

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    I recently bought a 2013 Audi A3 1.6 tdi for the Mrs. She is a highly qualified driver and is employed by the police to coach drivers after they have been involved in serious accidents. As well as driving the car herself, she anaylses other peoples driving and helps them to improve. Her old car was able to acheive and average of 55mpg+ on this mixed driving. Her A3 is averaging 37.6 mpg. She is understandably very disappointed with this mpg. We accept that the car is unlikely to average 68 as advertised but it should be in excess of 50. Many years a go I had and A6 1.9 tdi estate which regulary averaged 50 so we are very surprised at the A3 1.6 tdis lack of economy. The car is less than 2 years old and had done 30k miles so is still under warrranty. We have taken it back to our local dealers 3 times now and they say they have checked the car and there is nothing wrong with it. They even suggested the workshop manager take Mrs. D out and show her how to drive more economically. You can imagine how this made her chuckle! I recently got Audi UK involved and they have given us another 1.6tdi for the week and guess what.... we are getting 55mpg from it. To me this proves that there has to be a fault of some description with our car. I wonder what they will do now??? Will they simply try to sell us a brand new car or will they admit there is a fault? I will keep you posted!
     
  27. Dan-Jnr

    Dan-Jnr Well-Known Member

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    What do you get the old fashion calculated at the pump method? Have you reset the computer readings?
     
  28. Omy193

    Omy193 Work Hard, Play Harder :D

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    ive got a 2.0L TDi DSG S-Line Sportback and around town i average 30 - 35mpg depending on traffic and if traffic lights are red or green :p

    But on motorway easily 45 - 55mpg at 70 75mph

    I would have though the 1.6tdi would easily achieve 40mpg+ around town and 55-60mpg+ on motorway
    could well be what others have said about it being under powered.

    Definitely something not right there....
     
  29. Lukeyb

    Lukeyb Active Member

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    millers eco max is awesome.

    I do have to say though, we had a leon ecomotive 1.6TDI for a hire car a bit ago and i thought the economy was very bad, we felt like we were always having to put fuel in it worse than my VR6 golf
     
  30. Ash187

    Ash187 Audi-Retrofits.co.uk
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    When was the last service it had and the last time the fuel filter was changed? i noticed when i serviced mine with a fuel filter change that the MPG improved.
    also other things that factor the Mpg like tyre pressures, size and weight of alloys, tyre type, weight of right foot, etc
     
  31. DJ_26

    DJ_26 Active Member

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    I get an average of 59-60mpg from my A3 2.0 TDI PD140 when i drive carefully and that is calculated using the miles covered and the quantity of fuel put in the car. I do mostly motorway mileage. The trip 2 computer, says 62.7mpg so it's not too far off. I managed to get that up to 62.9mpg and as some of you may know, it takes a few days worth of economical driving to get the Trip 2 reading to go up! but when I drive at 70mph, it drops to around 55mpg
    I think that for bigger engines, greater economy is achieved at higher speeds in comparison to a car with a smaller diesel engine being driven at the same speed, as the engine has to work harder.
    So perhaps you may just need to drive a bit slower (60-65mph) and frequently take your foot of the accelerator especially if you are coming to a stop or see traffic building up. It may also help to give the car a good thrashing. Fill up from empty with Shell VPower nitro+ diesel, go for a long drive and once the engine has warmed up (after about 20 miles), thrash it a bit to give it a good clear out (3k-4k revs, do 70 in 4th etc) then return to normal driving.
     

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