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07 170 2.0tdi DSG, worse mpg after new mechatronics

paultaylor Mar 23, 2013

  1. paultaylor

    paultaylor Member

    Hi All,

    Wonder if anyone can help, I have a 2007 2.0tdi 170bhp DSG S-line Sportback with 46k miles and FASH.

    It was never as good as I had hoped on diesel but since a new mechatronics was put in it's worse!

    Last full tank only 405 miles from full to showing 5 miles range and that was mixture of 60% motorway and 40% urban.

    When we first got the car it had 37k miles and had just been serviced but was immediately exposed to a far too high amount of short journeys and it did an active DPF regen once so I continued on motorway for 30 minutes at 60mph.

    I had noticed it doing passive regens in traffic a few times by the higher idle so Im tempted to get a DPF delete at this stage.

    Another annoying issue is that in the three months since the mechatronics replacement it's developed an ever increasing sound coning from either the engine or transmission that sounds like a wheel bearing gone bad. It was very faint when I got it back and now I have to turn up the radio on the motorway to drown it out.

    Could this be connected to the worsening mpg?

    many thanks


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