Bayern Munich coach Ottmar Hitzfeld revealed that his side is yet to improve despite a thumping 4-1 Bundesliga victory at Karlsruhe on Sunday. The result re-established the Bavarians' position at the summit of the Bundesliga table, but Hitzfeld believes that the performance does not reflect the huge score line. "We had luck that we went into the lead so early, we were still not able to settle down in the game after that. I am not as happy as the result may suggest," said the Bayern coach. "It is nice to win 4-1 but a few things can still be improved. Karlsruhe put on great pressure after we took the lead, at 2-0 we calmed down and at 3-0 the game was decided." Bayern are unbeaten in the Bundesliga so far, as the German giants top the table with 14 points from six games.