As with previous years, eight people, nominated by their family or friends, entered the Driver Rehabilitation Centre to improve their driving skills.

Though ostensibly entering rehab to be a better driver for his son, Isaac, he quickly earns the ire of the show's crew for his juvenile behaviour.

Near the end of the show, Scott states on camera that he had driven far over the speed limit (once going as high as 200 km/h), kept driving despite having his license suspended, used another person's license while his was suspended (once while also under house arrest), committed hit-and-runs and driven while drunk; Cam relays the information to the Calgary Police Service, due to an obligation to his former profession as a police sergeant.

Due to his ineligibility to drive, Scott's license is returned and he leaves rehab in a cab with Danny, but not before the weight of reality sets in for him.

In the end, the experts agree to honour everyone's request, marking the first time in the history of the series that seven contestants remain heading into the fourth episode.

In deliberation, Brad states his case for graduation, having snapped after Lance's antics during the Lane Change Rally (they evoked memories of his mother's death in a construction accident in 1990, when she had been run over by a dump truck).

In the end, however, Dr. Kennedy-Smith somehow talks Andrew and Cam into also backing Diane, whom she points out was indisputably responsible for her own success in the Lane Change Rally, whereas Brad performed worse even with Donna's constant advice.

Diane therefore gets the unanimous vote to become the season's second graduate (marking the second time a contestant graduated in the fifth episode after Billie-Jean Leslie graduated in the fifth episode of the third season; Shelby D'Souza would have graduated that episode instead of being the eventual "runner-up" if not for Dr. Louisa Gembora's sole dissenting opinion that Billie-Jean, passed over three straight episodes due to Denice Koke (who was the last to arrive in rehab that season), Thomas Hobbs (who passed both Billie-Jean and that season's eventual worst, Jason Zhang, to make it to rehab before everyone else) and Marnie Maddison (whose performance in The Cross proved to be the difference-maker, as she finished with the fastest time, considering she quit on The Balanced Beam for Unbalanced Drivers) all having breakout performances, wouldn't be passed over a fourth straight week), once again ensuring that there will not be three women in the finale.

However, the experts still do give her credit for finally admitting that she has severe issues behind the wheel and that, regardless of whether or not she is named Canada's Worst Driver, she still has a massive amount to learn.

In the end, after 20 minutes of deliberation, the experts arrive at a unanimous decision—Brad, having been shortlisted twice and made relatively few mistakes in the Road Test, is not Canada's Worst Driver.

Dale does not graduate, but, by at least managing to finish the Road Test despite her numerous errors, avoids being named Canada's Worst Driver.