2005 2.0tdi tranny problems

[Phantom_A4]

Hi just a quickie, a friend of mine has a 2005 2.0tdi with 50k on the clock and mainly does motorway mileage. He seems to be having a problem with his transmission, mainly the clutch slipping i believe, with a lot of smoke petruding from the bonnet.

Has anyone else had these problems? He's had the car from new and expected the tranny to last a lot more than 50k? He's not heavy footed either

Any help is appreciated!