Has there ever been a 8–4 in the Bundesliga?

Yes, 1 time.

The only time: February 26, 1977, 1. FC Köln beat Tennis Borussia Berlin (1. FC Köln 8–4 Tennis Borussia Berlin).

Nearby scores

1. 9–3 1 time
2. 9–4 Never
3. 9–5 Never
4. 8–3 1 time
5. 8–4 1 time
6. 8–5 Never
7. 7–3 7 times
8. 7–4 3 times
9. 7–5 Never