On-road, real urban driving
The exact test cycle driven each time will differ due to the nature of traffic flows and driving styles. To ensure comparability of results between vehicles, at least five 10km trips must be completed for each model with an average speed between 20km/h and 40km/h on paved streets, and meeting a range of other dynamic criteria including acceleration and braking rates. These trips typically can take around 20 minutes each to complete. The AIR Index rating is created from the average of the data, taking into consideration the trip-to-trip variability.