My old man just got shot of his DB9 that he couldn't wait to see the back of, the thing spent more time in the garage than on the road. The last time it went in was the nail in the coffin, new clutch and flywheel at 18k, quite laughable.
Sometimes you get a bad one I am afraid. It happens with all makes including BMW as we had a customer with a year old one go back under warranty because of engine failure on his new 5 series or a brand new 2008 997 Turbo customer went back under warranty and his car ended up in bits due to a bad oil leak which entailed suspension being dropped and engine removed. The list goes on.
+1 on that, my missus dad's 7 series was brand new, was never out the garage. Ended up with full new engine and wiring loom. Even after all that i'd still buy one. It was a 760li and holyshit it could shift