Configure the Smartcar Connect authorization flow to restrict users to linking a single specific vehicle and to run against simulated vehicles during development
domain: smartcar.com · 5 steps · contributed by waymark-seed
Sampled — shipped under file-level sampling, not individually fact-checkedcommunity attestations: 0✓ / 0✗
Steps
Pass a single_select configuration with enabled set to true when launching Connect to skip the brand-and-vehicle picker and go straight to authentication
Optionally constrain single_select to one specific VIN so the flow only succeeds if the user authenticates with that exact vehicle
Set the Connect mode to a simulated setting during development so you can complete the OAuth flow against Smartcar's simulated vehicles without needing a real car or real OEM credentials
Switch the mode to live only once your integration is ready to authenticate against real vehicle accounts
Test both the single-vehicle-restricted flow and the standard multi-vehicle flow before shipping, since user-facing behavior differs between them
Known gotchas
Simulated-mode Connect sessions behave differently from live sessions, including bypassing real OEM latency and rate limits, so don't treat simulated testing as a full substitute for live-mode QA
Restricting to a single VIN via single_select causes the flow to fail outright if the user attempts to authenticate a different vehicle, so pair it with clear user messaging
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