# MotorMetrics API > Ask these docs: GET /ask?q= returns JSON { results: [{ href, title, heading, snippet, tab }] }; short keywords rank best. Append .md to any page href for its markdown. > > If the product lacks a feature you need, ask for it: /api/feature-requests.md ## Documentation - [MotorMetrics API](/api.md): Access Singapore vehicle registration data, COE results, and deregistration statistics - [Rate Limiting](/api/rate-limiting.md): API rate limits and best practices - [Feature Requests](/api/feature-requests.md): Suggest and vote on features for the MotorMetrics API - [Cars](/api/cars.md): Car registration data endpoints - [COE](/api/coe.md): Certificate of Entitlement bidding results - [Deregistrations](/api/deregistrations.md): Vehicle deregistration statistics