Star striker Pierre-Emerick Aubameyang's 14th-minute strike helped Dortmund collect a comfortable win over minnows Ingolstadt.
They have now narrowed the gap with second-placed RB Leipzig to 3 points. Dortmund have 46 points from 25 matches while Leipzig have 49.
Leipzig who has been the surprise package of this season is slowly losing the plot as the season is progressing. They suffered yet another shock defeat against Werder Bremen.
Bremen scored 3 past Leipzig and almost killed their hopes of winning the title. If Bayern win their match today they will move closer to the title with a wide gap at the top.
On Sunday, March 19, leaders Bayern Munich defeated Borussia Monchengladbach 1-0 away from home and extend their lead to 13 points.
Here are all the results from game week 25
Saturday, March 18
Dortmund 1-0 Ingolstadt
Wolfsburg 1-0 Darmstadt
Augsburg 1-1 Freiburg
Werder Bremen 3-0 RB Leipzig
FC Koln 4-2 Hertha BSC
Hoffenheim 1-0 Bayer Leverkusen
Eintracht 0-0 Hamburger SV
Sunday, March 19
Mainz 0-1 Schalke
Borussia Monchengladbach 0-1 Bayern Munich