I sold a car and now two months later the buyer wants a refund?

I sold a car which seemed fine but 2 months later the timing chain went and the new owner has asked for some of the money back. There were no signs of any issue when I had it. The car was sold as seem...

Does my Kia Soul have a cambelt or chain?

I have a Kia Soul Samba CRDi 1.6 1st generation, my garage tells me I have a chain. Other info I looked up tells me its a cambelt, garage says it has metal cover. Would you be able to verify for me?

Does the Renault Kangoo 1.5 dCi have a cambelt or chain?

Has it got a timing chain or belt?

Is a timing chain better than a cambelt?

I am thinking about buying a newer car. It has a timing chain which needs no maintenance or replacement apart from regular engine oil changes. Many of the cars I am considering have engines with timing...