The Other Side of the Coin - S4-E16
Continuity mistake: When Sheriff Corby arrests Kimble outside the boarding house, the front door is open and the porch light is on. In the next shot, as they get in the car and drive away, the house door has closed itself and the porch light is off. (00:27:55)
The Other Side of the Coin - S4-E16
Continuity mistake: Corby hides Kimble in the trunk of his car. When it's partially opened, we see Kimble in a horizontal bar of sunlight. After Corby slams the trunk shut, we see another shot of Kimble, who should now be in the dark, still illuminated by the bar of sunlight. (00:47:20)
Answer: Production vehicle models aren't in sync with the calendar year. The '65 Mustang began production in March 1964 and first sold in April 1964, before it was "introduced" the following year. I don't know which model was seen in the episode, but the 2+2 fastback was sold in September 1964. The 1964 film "Goldfinger" uses a 1965 Mustang as part of Ford's product placement. Basically, in the 1930's, FDR ordered automakers to release vehicles in the fall of the preceding calendar year "as a means of facilitating regularization of employment in the industry." Now, automakers can release new models as early as Jan 2 of the preceding year.
Bishop73