I recently sold an 8-year old BMW 525D advertised as in good condition but with 127,000 miles on the clock. The buyer negotiated the price down because the computer did not work properly and then drove it 120 miles home. The following day the car had a flat battery and was towed to a garage where it was diagnosed as needing a new battery, one glow plug and the new owner asked for a general check resulting in the clutch being described as worn, but not failed. We replied that the battery was new this year and under guarantee, and that the glow plug was fine on leaving us and apparently all the way home. I have now received a solicitors letter asking for payment for a new clutch. I do not feel responsible as the car was good when I sold it. What do you think?