A dramatic late penalty has given Manchester City their first win of the Champions League campaign as they defeated Borussia Monchengladbach 2-1 in Germany.

The Sky Blues should have taken the lead with five minutes on the clock when Raheem Sterling's low cross towards the back post found Sergio Aguero in front of goal, but Yann Sommer produced an instinctive block.

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Gladbach had the opportunity to take the lead from the penalty spot in the 25th minute when Raffael was felled in the area by Nicolas Otamendi.

Raffael took the kick himself, only to be denied as City goalkeeper Joe Hart guessed correctly and saved it.

Hart had a string of additional stops to make before the first half was up, thwarting Raffael in a one-on-one situation in the 34th minute, before denying Patrick Herrmann from an angle to keep City level pegging at the interval.

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Hart could do nothing about Gladbach's opener, which came early in the second half when Julian Korb's dangerous ball into the area was diverted home by Lars Stindl from close range.

City were on level terms in the 65th minute when a Martin Demichelis strike was cleared only as far as Otamendi, who drilled home the equaliser, even though his teammate's initial effort appeared to have crossed the line.

The Sky Blues' winner came under the most dramatic of circumstances. Aguero twisted and turned in the box, drawing a foul from Fabian Johnson and the referee pointed straight to the spot.

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With 90 minutes on the clock, the Argentine stepped up himself and fired home the winning goal and secure City's first Champions League win of the season.