Does the Lexus NX have a timing belt or chain?

Whether Your Lexus NX uses a timing belt or a timing chain is going to depend on the release year. In general, You should expect that it's going to be a timing chain, as since the mid-00s, every vehicle Lexus has put out has used one. Why Because they're much more reliable and seldom need replaced. Some downsides are that when things do go wrong, it's very noticeable, with a loud squealing or rattling coming from the engine. If You do have to replace one, the cost is usually around $180 for a Lexus NX200t, part number 13506-36030.