Hi Dave,

Presumably you mean the 1.6 diesel, as the 1.6 petrol engine in that year Mokka used a timing belt. 

Timing chains don't usually come with replacement schedules as they are designed for the life of the engine. Of course, sometimes they do need to be replaced if they get noisy or a tensioner fails. If you have any concerns, let a good mechanic have a listen to your engine.