Insiders have told Edmunds that FIAT will in fact be using their own 1.4L in the 124...
Industry sources tell Edmunds that Fiat's 1.4-liter four-cylinder engine likely will be under the hood of the 124 Spider. The MX-5 Miata is powered by Mazda's 155-horsepower 2.0-liter four-cylinder engine. Both vehicles will be assembled at Mazda's Hiroshima, Japan plant.