Felipe Nasr was unable to add to his strong start to life in F1 as an unexplained engine issue denied him the chance to ever feature in the points during the Bahrain Grand Prix.

Despite having shown top ten pace in practice, Nasr missed out on a place in the pole position shoot-out during Saturday's hour-long qualifying session, but the Brazilian maintained his twelfth starting position through the opening laps of the race, before dropping back shortly before his first scheduled pit-stop. He briefly rose as high as eleventh on his second stint and tenth for a couple of laps on his third, but fell away again at the end to eventually finish up back in twelfth spot.

The biggest mystery, however, was why Nasr was slowed by a temporary loss of power which, despite eventually being countered by the team, cost the former GP2 frontrunner both time and track position.

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"It was a difficult first lap for me as I got squeezed in turn one and, afterwards, got stuck in traffic which compromised my race pace during the whole first stint," he reported, "In the course of the race, I also lost power for several laps, which made us lose ground."

Team principal Monisha Kaltenborn confirmed that 'the engineers were able to fix the issue after some laps' but acknowledged that the problem ended any hopes of the team scoring points after Marcus Ericsson also ran into problems while on course to add to his tally.

"The time lost was too big, and so Felipe was also not able to fight for points like his team-mate," Kaltenborn sighed, "There is no doubt that we missed a very realistic chance of finishing in the points, particularly as our lap times were competitive [and] both drivers fought impressively, but we didn't get any rewards."

With two scoring finishes flanked by a pair of twelfths, Nasr remains optimistic as F1 heads towards Europe next month.

"On the positive side of things, I was quite satisfied with our lap times on the medium compound," he noted, "Overall, I think we could have scored points if we would have had a clean race, so it is a shame not to have them."