Paddy Lowe says Mercedes have been working hard to 'understand' the power unit issues that put Valtteri Bottas out of the Monaco Grand Prix.

Bottas was running eighth in his Mercedes-powered Williams when he was forced to retire on lap 50, but Lowe maintains they are 'confident' now there won't be any similar problems at Canada's Circuit Gilles Villeneuve next weekend for either Bottas or any of the other Merc powered cars, including those of factory drivers, Lewis Hamilton and Nico Rosberg.

"Canada is another unusual circuit but in the opposite vein to Monte Carlo. It's very much a power circuit and we're looking forward to seeing how the Mercedes-Benz Hybrid package performs around this type of track layout. Endurance will also be an important factor given the high demands placed on the components, so it will provide a comprehensive test of the Power Unit. There were some concerns after Monaco following a retirement for Valtteri Bottas but the team at Brixworth have been working extremely hard to understand that problem and ensure that it is contained across every engine. We are confident that this will be the case," Lowe confirmed.

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Meanwhile, Lowe added he is hopeful that Hamilton and Rosberg will again be strong as Mercedes looks to extend its winning streak to seven from seven in F1 2014 - and its 1-2 run to six.

"Monaco provided another fantastic weekend for the team. We approached the event with cautious optimism, but without being entirely confident that our car would enjoy the same performance differential as seen at the previous rounds of the season. This made the result all the more satisfying, particularly given the special effort put in by everyone involved to prepare for the unique challenges of this race," he added.

"In Montreal, we have a circuit at which Lewis has traditionally excelled and, with both him and Nico on top of their game, we're expecting them to push each other all the way through the weekend once more," Lowe continued.

"As always this will of course depend on the team providing a good package and equally strong reliability. We will be bringing a number of updates to the car, both on the power unit and aerodynamic side, so it should be an interesting weekend.

"Montreal is a fantastic venue that provides great racing, good weather and a lively atmosphere thanks to some very enthusiastic fans.

"Overall we're excited about the weekend ahead."