Mercedes has traced the blow-up of Lance Stroll's brand-new phase 2 engine in Canada to a spark plug failure, an issue the manufacture has since addressed.
Mercedes introduced its first engine upgrade of the season in Montreal, with the new unit supplied to its works cars as well as to Williams and Racing Point's drivers.
Stroll's engine failed in FP3, igniting concerns in the German camp that the Canadian driver's issue - the cause of which was unknown at the time - could spread to all of Mercedes' phase 2 units.
The weekend unfolded without any further drama however, while investigative work by Mercedes' HPP engine department in Brixworth uncovered the reason for the unexpected breakdown.
"The origin was a spark plug failure that caused a cascade of other problems, resulting in the engine failure," a Mercedes spokesman told Motorsport.com.
"We will have countermeasures in place for this weekend."
Stroll completed his Canadian weekend with a phase 1 engine that powered the Canadian to a top-ten finish. The Racing Point charger should revert to a phase 2 unit for this week's French Grand Prix.
Gallery: The beautiful wives and girlfriends of F1 drivers
Keep up to date with all the F1 news via Facebook and Twitter
Full results from Free Practice 1 for the Abu Dhabi Grand Prix at Yas Marina,…
On the eve of Formula 1’s thrilling 2025 title decider in Abu Dhabi, the entire…
As Formula 1 prepares to wave goodbye to its current rule set in Abu Dhabi,…
On the eve of Formula 1’s season finale in Abu Dhabi, drivers set aside championship…
Formula 1's 2025 season hurtles toward its dramatic close this weekend in Yas Marina, with…
In a title showdown charged with tension, numbers, and a hint of intra-team intrigue, Max…