Despite creating several chances each, neither side was able to break the deadlock in a replay of the 2023 Champions League final.
Erling Haaland came closest in the first half, pulling a shot narrowly wide of the post from 20 yards.
Phil Foden, making his first home appearance of the season, could also have opened the scoring but instead saw his right-footed strike denied.
Then, in the dying moments of the game, Ilkay Gundogan had two headers but could only aim the first at Sommer before clearing the bar with his second.
At the other end, Inter will also regret some spurned opportunities of their own.
Henrikh Mkhitaryan was perhaps the guiltiest party - firing a shot from 10 yards high over Ederson‘s goal.
After the game, both managers congratulated each other on a point well earned in the first week of the new eight-match league phase of Europe’s elite competition.
Watch the key moments above...