Real age of James Garner in Grand Prix
In the movie Grand Prix, James Garner was:
37 years old
That was the real age of the celebrity according to our calculation.
The calculation of the shown age took into account the first day of the year in which the movie Grand Prix was released:
January 1, 1966
And the day in which James Garner was born:April 07, 1928
Since movies usually don't take more than one year to be released since the beginning of the filming process, James Garner may have been one year younger or one year older than the shown age while some scenes of the movie were being filmed.