Umm.. No and no. Belts need to be changed at some service interval, usually 100k SI units. If you don’t do it, a ripped belt wreaks havoc on the engine. Chains

Umm.. No and no. Belts need to be changed at some service interval, usually 100k SI units. If you don’t do it, a ripped belt wreaks havoc on the engine. Chains are typically installed for the life of the engine, and need to be changed only if it’s a problem. A caveat though. I used to have a Škoda Fabia with a chain drive, and I did end up changing it, as it started making the tell-tale sound when stop-go. In the context of hybrids though, I fully expect that chain to last the lifetime of the engine. The engine is under significantly less load than in a traditional ICE, so less stress on the chain. Also, for 100k mileage, the motor-hours that the engine has worked are less than in an ICE due to the engine regularly being off.