Looking for a translation of '舒适性‘ and '安全性'? 该品牌汽车以优良的舒适性和安全性赢得了众多车主的喜爱。

This brand of automobile uses first rate *comfortness and *safetyness to win many car owner's favour.
安全性

safety; safeness -ABC
safety, security -KEY

I would just translate both as safety and comfort.
I guess you want to try and translate the 性 as accurately as possible but if you look at the definitions above they don't get super &quot;-ized&quot; or &quot;-ness&quot;-y.