The data indicates that all Mazda MX-5 (2005-09) 2DR Convertible 2.0 160 Icon models use petrol as their primary fuel type. Additionally, for the model year 1999, the engine capacity is listed as 100%, although this may not directly correspond to the specific 2005-09 models, suggesting a potential extrapolation or data generalization. Overall, these vehicles predominantly feature petrol engines, with no indication of alternative fuels in the available data.