Based on the available data, all of the sampled Mazda MX-5 (2005-09) 2DR Roadster Coupe 2.0 160 Niseiko vehicles were manufactured in 2008. This suggests that the specific model year highlighted falls entirely within the production year of 2008, indicating that these vehicles are all from that year. Such consistency could be useful for buyers or sellers interested in this particular model year, especially considering the model's popularity during that period.

The data indicates that all Mazda MX-5 (2005-09) 2DR Roadster Coupe 2.0 160 Niseiko vehicles in the sample are powered exclusively by petrol. Additionally, the engine capacity appears to be uniformly recorded as 100%, which suggests that specific engine size information may not be available or consistently recorded for this model in the dataset provided.