Saab Naming Convention

"Every car Saab makes has a name that starts with the number 9. The 9 simply means "this is not a military vehicle."
When the company was founded in the 1930s, Saab was an acronym for Swedish Aircraft, Ab (the Swedish equivalent of Inc.) After World War II, while Saab was still strictly an airplane company, it was decided that all civilian projects should be given numbers starting with 9. The Saab 90 and 91 were civilian aircraft.

Saab's next project was a car. Since it was not a military vehicle, the car was given the number 92. Since the numbers always had to start with 9 it didn't take too long before Saab was into three-digit, then four-digit, car names.

In 1998 came the car that would have been the Saab 90,000. At that point, Saab went back to double digits, but the numbers were now separated. In ordinary text, the numbers are written with a hyphen in between, like this: 9-5. On the back of a Saab, the second digit is offset in a slightly different typeface.

As with BMWs, the second number indicates the relative size and price of the vehicle. If it's followed by an X, as with the 9-2X, that means it has all-wheel drive."

Extracted from Cartype.