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XM radio and Sirius Satellite Radio started as two separate satellite radio companies in the United States. They merged in 2008 and now operate as one service called SiriusXM. This means “XM radio” and “SiriusXM radio” usually refer to the same subscription today.

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Quick comparison

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Key takeaways

  • XM and Sirius no longer exist as competing services.
  • All subscriptions, activations, and support are handled through SiriusXM.
  • Older XM and Sirius radios may still work if they are eligible.
  • When you search for help or plans, use “SiriusXM” for the most current results.

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Does my old XM radio still work?

Many older XM and Sirius radios can still be activated on a SiriusXM plan, but some very old models may no longer be supported or may not receive every channel. The easiest way to check is to enter your Radio ID on the official SiriusXM website during activation. The site will tell you whether the radio is eligible.
Find your Radio ID first by tuning to channel 0. See Find your Radio ID.

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Which term should I search for?

When you look for activation, plans, or support, use “SiriusXM.” Searches for “XM radio activation” and “SiriusXM activation” lead to the same process on the official website, but “SiriusXM” is the current brand name and will return the most up-to-date pages.

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What changed after the merger?

After the 2008 merger, SiriusXM combined channel lineups, unified billing, and created a single activation system. Over time, older XM-only or Sirius-only hardware has been phased out, while newer radios support the full SiriusXM service. The SiriusXM app was introduced to add streaming alongside satellite broadcasts.

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Frequently asked questions

No. XM radio and Sirius merged in 2008. There is only SiriusXM today.
Many older radios can still be activated. Enter the Radio ID on the official SiriusXM website to check eligibility. Some very old models are no longer supported.
Modern SiriusXM-ready radios receive the current combined lineup. Older XM-only or Sirius-only hardware may have limited channel access if it is still supported at all.
“XM radio” is still a common search term and brand reference, especially from long-time users. The service itself is now SiriusXM.
There is no separate XM pricing. All plans are SiriusXM plans. Check the official SiriusXM website for current plan options.
This is an independent, unofficial guide. It is not affiliated with or endorsed by Sirius XM Holdings Inc. Always complete activation, payments, and account changes on the official SiriusXM website or app, and never share card details on third-party sites.