Does the 2019 Infiniti Q50 have a timing chain?

The 2019 INFINITIQ50 has a timing chain inplace of a timing belt. The manufacturer chose to use a chain because it will far outlast a belt, sometimes lasting longer than the car is in service. There are other reasons to use a chain as well, belts tend to stretch after a certain amount of time which causes small variances in timing that are hard to predict. Then You have the fact that rubber does not play well with oil, gas and coolant. Three things You are guaranteed to have plenty of in Your engine bay eventually. You may be asking why would any manufacturer use a belt if a chain is so much better The main reason is cost, a belt costs a fraction of what a chain does to produce and when You are trying to hit the lowest possible msrp for Your vehicle putting a belt in there can help.