Nissan Jukes generally have a turbocharged 1.6 Litter engine that uses a timing chain. Some of the engines (2011 - 2013) contained a defective timing chain that was covered by a Nissan factory recall. If you call Nissan with your VIN number they will tell you if yours contains the defective chain. Chain replacement for those not on the recall will vary depending on maintenance and driving conditions. A Nissan dealership will diagnose the amount of wear on the chain by listening for a pronounced, distinct rattle from the front of the engine. Listen to your engine and don’t take chances. If you hear something weird get it in.  If the chain breaks it will destroy the engine.