Civic VX's turn 20 and 21 and value goes up.
 

I got my insurance bill and paper work yesterday and because we have a lot of deer hit by cars and I lone my car out a lot I have full coverage, it started out at $11 per month extra and is now up to $39 per month extra! so before I canceled my full coverage I figured I'd check vehicle value and see how much I'd have to set aside to replace my car... $4,000 to $5,800 is the NADA value! it looks like once a car reaches 20 years old NADA stops caring about how many miles it has, it also assumes it's now worth 3 times as much as it was before or 2.5 times as much as the 19 year old version of the same car.
So the car I paid $1,100 for is now worth over $4,000, maybe more seeing as how it's the cleanest VX I've seen in person.

1. Buy 19 year old car.
2. Wait one year, get rear ended.
3. Profit!!!

You could do that, I'd rather not have my rust free civic vx rear ended tho.

I just looked up a 2003 Prius and my civic vx is worth more then the ten year old Prius!

I don't know where the NADA gets their info from, but if they switch sources after 20 years then glitches like this aren't unexpected. The older stuff gets, the fewer of them exist/change hands (most value guides either take their info from wholesale auction results or sale prices reported by whoever collects the taxes on those sales), and the ones that do tend to be nicer examples that bring good money, as you are going from the "beater" age group to the "collectible" age group. A pile of 2004 Civics got sold last year, so a few prime examples selling for a lot won't skew the numbers much. But change that to 1994, and a whole lot less of them got sold, so it only takes a few really nice ones to skew the averages.

P.S. I'll sell you my '92 VX for $2000. You can double your money lol!

I think they are also figuring that no one is going to get full coverage insurance on their rusty beater, there for they only have "good" and "excellent" as condition choices, I move to a year newer, put in the miles I have and a rusty beater Civic VX is worth $75... now ANYONE on here would pay that much for even a beater of a VX but that is how their value figures go, with the miles my car has, if it was 19 years old it would be worth around $1,400... cars in the same condition are selling for $4,000+ on Ebay with the same miles so I don't think the NADA values are that far off and at 20 years old the fact that they drop the discounted value for the number of miles seems more fair... sure a Civic VX with 10,000 miles is going to sell for more but not that much more!
But at 20 years old I can get collector plates that never expire and sometimes collector insurance that is cheaper and again, but with both of those I am required to have a 'regular main vehicle' and if I have full coverage I would think that they would hope that I'm not out hill jumping or mud bogging on the weekends with it.