You are talking about a car made in 1994 which is not that old of a car. The answer is no for 99.9% of the cars built in 1994 or even much earlier. It depends on how many were built, how popular, and how rare they are. There are cars built in the 90s & 80s whose value has went up but they are not many.
cars over 20 years old
You can't tell the value of a coin in 20 years. It is worth around 2-10 cents in circulated condition. My guess is that it will be worth around 75 cents to $1 in 20 years but you can never determine the value of a coin in 20 years.
I want say 20 years or older.
probably no older than 20 years
so retailers can tell you the car will last 20 years longer than it will
u have to be ninety years old and sell 20 cars to be a magician
because they add vinegar into the metal.
80%
20 years
No. Died 20 years before the first cars.
20
It depends on the demand for the car. If it is a collectible car it happens more than likey a dozen years after production. If it is a car that is discontinued it depends on the previous years collectibility of the car in question. If it is a car that is very desirable, for the years after production the value stays very similar to production year (or it increases slightly). Some cars never increase in value. Some cars increase in value as soon as they leave the production line, but again; it depends on desirability and collectibility.