'To finish first, first you have to finish'. Formula 1 teams can't score points, wins or championships unless their cars make it to the chequered flag.

Reliability Engineers like Sauber's Laura Villadelprat work in the garage and the factory to keep the cars on-track and avoid the dreaded DNF (Did Not Finish).

Laura explains how F1 teams know when it's time to swap old car parts for new ones, how they monitor reliability in real time, and what they do to investigate the causes of race-ending problems.

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