The problem with this comparison is the two things are mutually exclusive. One is not an investment, and simply a means of transportation that depreciates in value. The other is an investment, that appreciates in value.
To put in perspective, I keep my truck relatively clean. I dont want it to look like a filthy heap of shit. I do not really give a shit it there is a ding or scratch in it. I just dont care. I also bought this truck from a dealership that only sells rebuilt titles. So I got a truck that would have been 40k, for 22.5k. It was already totaled at some point. You cant tell driving or looking at it. I will likely never sell it, and drive it for at least 250 to 300k miles.
My house I care about immensely. I try to stay on top of everything the best I can. It is a big part of my "nest egg" and I treat it completely different.
I have also seen people that live pretty dirty, but repair broken things in their homes. They may not be clean, but they don't destroy things, and actually repair things when they break.
I have also seen people that keep things super clean, but dont fix shit, and just completely neglect repairs. Like they just have no concept of repairing things. "Oh thats broken, I guess we just dont have a 1st floor A/C anymore. "We never use the dishwasher." translates directly into the "the dishwasher broke years ago". Floors are sparkling clean, but the garage door hasnt worked in 5 years.