There's no single, definitive answer to how many Ford Mustangs have been sold since 1964. Ford doesn't publicly release precise cumulative sales figures across all generations. Various sources offer estimates, but they vary and often don't encompass all markets and variations (e.g., export models).
To find an answer, you'd need to aggregate sales data from each model year from various sources, which would be a substantial research project. Any number you find will be an approximation.
