Hi guys just picked up car second AUDI i got at a reasonable price, however noticed that it is real sluggish in low speeds. until it gets to about 30MPH (My 2003 A4 1.9TDI Multitronic is fab and i was expecting similar.) Similar issues through speed range, Cannot feel any real power this should have for a V6. Noticed that it seemed to get to about 80MPH but keets revs at 4000 and not change up gear if foot pushed to floor. Does this sound like a MAF problem or a dreaded Gearbox problem. The car was purchased privately but went into AUDI for a service last week. Any thoughts?