How would the bevel gear problem manifest itself? I was looking at 11/97 XC70 with 128kkm/80kmiles and when ever I accelerated hard on the first gear(it's a manual) I could hear a pretty loud "howling" sound like metal grinding on metal. When we looked under the car the middle difrential(the one in front of the back axle) looked brand new. The dealer agreed on 1y/35000km warranty on this car but I want to get this sound fixed first. Do you guys think it could be the infamous bevel gear problem?