Stuttering Bayern took the lead after eight minutes through a clinical left-foot finish from Mario Gomez after a pass from strike partner Miroslav Klose.

The league top scorer Stefan Kiessling leveled the score six minutes later to take his tally to nine goals.

He latched onto a long ball, skipped past Daniel van Buyten to fire into the bottom corner.

Leverkusen, who maintained their unbeaten run this season, moved one point clear at the top with 27 points.

Werder Bremen, who thrashed Freiburg 6-0 on Saturday, are second on 26, five ahead of seventh-placed Bayern.