Well, if you want to drive a safer/more enjoyable car, i.e. you actually want a better car, then change. Otherwise just keep the Vios. It will get you from A to B.

Basically just do whatever you want and what makes you happy. Does it matter if others think you are rich? I am more willing to give way to someone in a cheap car. (Unless it's a Vios or Avanza, then I don't give way, or a German car, then I do). Of course if you need it to make business (i.e. you need to give a good image, you have to meet clients and customers that are very rich, ...) then it is different. But you said that doesn't apply to you.

Also beware that an expensive car will make you a more likely target for robbery, since you are apparently rich.

What is the guy doing there, standing between Vios and hill? Looks photoshopped to me.

However this one: http://notenarchive.de/nakgotha/bilder/AutoinDach1.jpg is 100% real. IIRC the Skoda is in about 7 meters height. The driver survived.

lol. There is no fireman between car and roof, or my eyes aren't good enough. However there are videos of the scene, should you really doubt it.

Still, the Vios looks a bit odd at the place where it blends into the hill. On the other hand someone must have been really bored to do a few pretty convincing Photoshops, so I guess it's real too.