CarAPI vs Transport for Spain
Same instrument, two spec sheets — measured, not claimed.
CarAPI vs Transport for Spain: common questions
Which is more reliable, CarAPI or Transport for Spain?
Both are neck-and-neck — CarAPI and Transport for Spain each measure 100% uptime over 90 days on our probe schedule. Reliability here is verified from our own scheduled checks; use the 30-day bars above to see which has been steadier lately.
Which is faster, CarAPI or Transport for Spain?
Transport for Spain has the lower median latency in our checks — CarAPI responds in 1223 ms versus Transport for Spain at 603 ms (P50). Tail latency (P95) is in the table above; for most workloads the median is the number that shapes how the API feels.
Do CarAPI and Transport for Spain need an API key?
Transport for Spain needs no key, while CarAPI requires a free API key. If you want to start calling without signup, reach for Transport for Spain first.
Can I call CarAPI and Transport for Spain from the browser?
Neither sends browser-friendly CORS headers reliably, so call CarAPI and Transport for Spain from a server or proxy rather than client-side. The CORS and HTTPS rows above show exactly what we detected for each.
Are CarAPI and Transport for Spain free for commercial use?
CarAPI has unclear commercial terms, and Transport for Spain has unclear commercial terms. We track service terms and the data license as separate fields — see the Commercial use and Data license rows above, and confirm both before shipping either in a paid product.