Mazda has an internal debate going on as to whether to electrify or not the next generation MX-5 Miata. One of the major concerns is keeping the car light weight. The current car in base form tips the scales at just 2,345 lbs. and is incredibly well balanced, so adding batteries and electric motors could upset that balance.
Electric motors can be compact and powerful though, adding torque in places where gasoline motors are weak. In order to provide that power, they require dense and heavy battery packs. Still, if power can be added to the 2.0-liter four-cylinder that produces 181 horsepower and 151 lb-ft of torque, it might make up for the weight increase in a straight line.
Why do this? It's not like the MX-5 is a huge seller. It doesn't contribute to Mazda's overall volume in such a way that it should require efficiency tuning to meet fuel economy standards. Just 8,971 Miatas passed through Mazda dealerships in 2019. The answer is in image. Mazda wants to maintain the appearance of being eco-friendly. They feel that the preference of people who enjoy driving sports cars could be changing, so Mazda needs to think about the direction society is going. The next Mazda MX-5 isn't due until 2022 or so, so Mazda still has some time to decide.
Mazda is committed to the original formula that made the Miata an icon though, and any electrification will have to happen with the thought of maintaining lightness as a priority.