Gen 6 vs gen 7 engine noise

I recently had my 24 premium in for Service and got a 26 limited XT for a loaner. I noticed the engine noise was much lower in the 26. Does anyone think it’s mainly from being a limited trim, the XT motor or just changes in the new GEN? I didn’t drive different trims or XT model in the GEN six to compare so not sure if the engine noise exist in the previous GEN too.