Use Smartcar batch requests to fetch multiple data signals for a vehicle in a single API call

Steps

1. Identify the set of GET endpoints you need per vehicle (for example, odometer, fuel level, location, battery charge) to bundle into one batch call
2. Construct a batch request body listing the desired endpoint paths and send it to the Smartcar batch endpoint with the vehicle's access token
3. Parse the response array, which returns an individual status code and body for each requested endpoint, handling per-item errors without aborting the whole batch
4. Implement retry logic only for the failed sub-requests rather than re-issuing the entire batch to avoid redundant data pulls
5. Cache the successful sub-responses with their timestamps to respect rate limits before the next scheduled batch poll
6. Log per-endpoint latency from batch responses to identify slow OEM data paths and adjust polling cadence accordingly