In-form Bayern Munich striker Robert Lewandowski says it is too soon to talk about him breaking the Bundesliga record for the most goals scored in a single season.

Lewandowksi, 27, already has a league record nine goals in his past three matches after scoring a brace in a 5-1 victory over his former club Borussia Dortmund on Sunday.

The Poland international, who scored all five goals in another 5-1 home win against Wolfsburg last month, has now found the net 12 times after eight league games -- something only Gerd Muller and Christian Muller have achieved before.

Legendary former Bayern and West Germany forward Muller holds the current single-season goalscoring record, having netted a remarkable 40 times in the 1971-72 season.