morning ladies and gentlemen can i pick your brains please i have a 97 c200 auto i have aquired a droning/humming noise whilst driving it seems to get louder the faster i go i jacked the vehicle up one side got my mate to put in gear and accelerate while i looked underneath the noise didnt seem to start till it changed to 2nd then as it changed to 3rd it got louder and when you brake theres a metal clanking noise it doesnt appear to be near the hub area anyone any clues please