The Mazda MX-5 Fourth Generation is a two-seat Roadster with a compact, rear-drive layout. You get a simple sports car: pick the engine, the gearbox, and how much equipment you want on board.
The Mazda MX-5 engine you pick sets the character of this Roadster. Two examples are the 1.5 MT and the 2.0L SKYACTIVE-G: both are gasoline units with a manual transmission and rear-wheel drive, so the powertrain stays light and the drivetrain is straightforward.
On the 2.0L SKYACTIVE-G Roadster, Mazda MX-5 trim levels include Standart and Special Edition. Those names describe equipment packages on the same technical version—same gasoline engine, manual gearbox, and rear-wheel drive—so you are choosing cabin and exterior extras rather than a different powertrain.