They worked 2 years ago, when I bought the FM4 Limited Collectors Edition and the Porsche expansion. Old pre-order cars, that were tied to my Xbox account back in 2011, were still there and downloadable too.
For FM3 some content didn't work any more.
I don't know about the DLC state today, but I would assume it's the same.
Edited by user Monday, October 28, 2019 4:41:30 AM(UTC)
| Reason: Not specified