| Acronym | Definition |
|---|
| ECAR | Experimental Car |
| ECAR | Every Child a Reader (UK) |
| ECAR | East Central Area Reliability Coordination Agreement |
| ECAR | Economy Car |
| ECAR | European College of Animal Reproduction |
| ECAR | Eligibility and Certification Approval Report (US Department of Education) |
| ECAR | European Campaign for the Freedom of the Automotive Parts and Repair Market |
| ECAR | Environmental Compliance for Auto Recyclers |
| ECAR | European Civil Affairs Regiment (US Army) |
| ECAR | Eastern Caribbean |
| ECAR | European Civil Aviation Requirement |
| ECAR | Extra Cost Approval Request |