Wiki editor help -- HR 5734

I'm getting a little resistance to editing the "Quietness" section of the Prius entry in Wikipedia. I'm trying to get some of the opposition facts and data into the record but two editors seem to think the current "Quietness" is perfect without the counter arguments. It reads as if 'we are happy with it.' The version as I found it:

This is the latest paragraph I attempted to add:

I am not a Wikipedia expert and may be violating a number of style guides. I can learn and will try to fix it if that is the only problem. What I can't abide is having only one side of the issue presented. IMHO, that implies our acceptance of this nonsense.

I could use a little help on this.

Thanks,
Bob Wilson