What Might Have Been: The 2016 Mazda MX-5 Miata Meets Its 367-Horsepower Grandfather Published on September 25, 2015 in Comparative Tests by Benjamin Hunting Photo: Benjamin Hunting The 2016 Mazda MX-5 Miata's 155 horsepower, 2.0-litre four-cylinder engine offers a bit more grunt than the 116 horsepower, 1.6-litre mill that ruled the roost from 1990 until 1994.