When should Prius be replaced?

I am totally expecting a little trolling here, afterall, it is a Prius.

BUT

My wife is driving a 2007 Prius that only has 76,500 miles on it. It was given to her a few years back by her grandparents while she was in veterinarian school. It seems to run fine and has had no major issues yet. She has had the startup battery replaced once. Just the other day she said that her dash lights never came on until a coworker "pushed a few buttons" and "reset" it.

Do any of you have experience with the second generation Prius? I've heard that the main drive batteries last about 10 years and can cost upwards of $4k to have replaced.

When do you all think it will truly be time to start car shopping? I am not a fan of putting $4k into a 10+ year old car that I do not like anyway.

Constructive feedback solicited, trolling expected.

 

That year of Prius with those low of miles is not a bad car. HV batteries have come down in price. You still will pay a couple thousand. But for a dependable vehicle with little maintenance, I would still keep it. We see customers rolling in with a couple hundred thousand on their car and it's the original HV battery. One of the worse things is to not drive it.
On that not though, maintenance is key. Those plugs are iridiums and only need to be replaced 120K. Engine and inverter coolant could afford to be exchanged by now, being 10 years old.
As for the dash lights going out...do you mean the odometer and fuel gauge? Or the actual service lights. If the odometer and fuel gauge are going out, this combination meter computer will need to be replaced. The dealer will need to keep the car and record the miles for a new one. Hope this helps

 

My dad has like 280k miles on his Gen 2 Pruis. Thing still works and he doesn't do shit to it. Oil changes and that's it. He lives on a farm basically and it looks like a piece of crap, but it's still running.