Here's some:
Most Mazdas have a gear ratio of 1 to 1 in 3rd or 4th gear.
All Mazda 4 lug wheels, excepting the Miata, are interchangable to other 4 lug, same with 5 lug, depending on offsets.
2 of the 4 new Mazdas(the Atenza/6, the RX-8, the Mazda 2, and the Mazda Axela/3) use the name form A-E-A.
The rotors in a rotary engine are placed 120 degrees opposite eachother.
The original Mazda concept car had '87 626 GT wheels, which were 4 lug, yet the production car's 4 lugs are a different pattern.
The 3 flags in the AutoZam emblem are supposed to represent the 3 companies of Mazda, Suzuki, and Ford.
The Eunos Cosmo was the first car to have a GPS navagational system.
The MX-3 GS had the world's smallest production V6, just 1.8L, while the MX-6 LS's 2.5 was the same size externally.
In South Africa, they make new 323s(the Stinger) that basically are the same as the '88 323.
The first Mazda North American headquarters was located in Vancuver Canada.
There are signs at Mazda Raceway at Laguna Seca that advertise the RX-8 with the slogan "hmmmmmm" refering back to the mid '70s commercials.
Mazda made my style 323 in Japan as a convertable called the Familia Cabriolet.
The Mazda 6 brochure shows a Protege 5 in one of the pictures of the 6.
The '88 626 brochure shows a switch location on the dash taped off with red tape.
In Gran Turismo 2, when you go to the East City, the cursor starts on Mazda.
Mazda is currently using the song "1 way or another" in thier Zero Time Event, the same song they used in the '90s for sales events.
Mazda has the world record for most roadsters produced.
In '89, the 10th anniversary RX-7 was originally going to have the 3 rotor 20B from the Eunos Cosmo Type E, but due to retooling costs, it wasn't used, though 1 such fully drivable RX-7 was made by Mazda and a RX-7 designer owns it.
A devision of Mazda was proposed in the early '90s called Amati. The project called for several luxury models powered by V12s. Amati never happened.
That's enough for now.