The Mazda N platform is an automobile platform for rear wheel drive sports cars. It has been the basis for four generations of the Mazda MX-5.
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NA
The NA utilized many components in-house, such as the 323/Familia engine and 323 GTX differential (1.6L), FC RX-7 (non-turbo) differential (1.8L) and the FB/FC (non-turbo) RX-7 RX-7 transmission, but the chassis was unique.
NB
The NB was very close to the NA mechanically. Most changes were related to the vehicle systems, including electrical wiring, and a new generation of the Mazda B engine.
NC
The NC utilizes a version of the RX-8 chassis, shortened accordingly. Many suspension and braking components are interchangeable.
ND
A new platform for the 4th generation of the Mazda MX-5 Miata (AKA Roadster in Japan)
NE/NF
A platform based on the 4th generation of the Mazda MX-5 Miata (AKA Roadster in Japan) for the Fiat brand to resurrect the 124 Spider on it's 50th anniversary of it's release. It's platform is very similar, but the sheet metal and drivetrain are completely different. It uses the Fiat 1.4 MultiAir turbo 4 cylinder and an updated Mazda NC 6-speed manual to handle the increase in torque vs the Mazda ND's Skyactiv 2.0 engine.
NE:
NF: