Car repair is a specific-task contract

Realisation of a specific-task contract usually takes the form of creating a thing, but it may also involve making changes to an already existing thing, repairing it, modifying or supplementing it, extending it, combining with other things, or adding component parts. A contract for the repair of a car may qualify as such. – Łukasz Chruściel comments for Rzeczpospolita

Article here.