There's no single definitive answer for the average cost of a car in 1995. The average price varied greatly depending on the type of vehicle (new vs. used, car vs. truck, domestic vs. import, etc.), the source of the data (manufacturer data, dealer data, consumer surveys), and how the average was calculated (mean vs. median).
However, various sources suggest the average price of a new car in 1995 was in the range of $18,000 to $20,000. This is an approximation and should be treated as such. The average price of a used car would have been considerably lower.