could anybody tell me what are the symptoms of MAF failure? can it be detected by a dealer via a diagnostic check? my a3 tq is quite jerky to drive,if you take your foot off the throttle,it jerks/surges....and when you change gear,if you don't let the clutch out smoothly and ease the throttle on gently,it hesitates/jerks. the performance seems to be lacking (unless i have got used to it) after about 4000 rpm,nothing happens. there is a particular slip road joining a motorway that i use daily,it starts downhill,dips,then climbs to join the main carriageway,if i accelerate smoothly but firmly in 5th,it's a struggle to get 65mph when joining,it's not what i expect from 180bhp. i am especially convinced since having a ride in my brother in laws saab turbo. it's going into the dealer on monday to have the dv replaced,but can they test the Map for me,or do i change the dv first,then change the MAP if it is required? has anybody else had these symptoms,and were they rectified? thanks in advance. i will add,the 50-70 in 5th time is about right ,8secs?