Has there ever been a 12–3 in the Bundesliga?

Never.

It would be a scorigami. Based on the average number of goals in the Bundesliga, the chance of a game ending 12–3 is about 1 in 21,536,816.

Nearby scores

1. 13–2 Never
2. 13–3 Never
3. 13–4 Never
4. 12–2 Never
5. 12–3 Never
6. 12–4 Never
7. 11–2 Never
8. 11–3 Never
9. 11–4 Never