The Forward and Reverse Slalom: For this challenge, the drivers are placed at the wheel of the Ford Crown Victoria "taxicab" previously used in the Distracted Driving challenge in Episode 3 (with the other two candidates as their passengers), and given the task of driving forwards and then in reverse through a slalom course containing six foam people. Each driver will have ten attempts to complete the course in less than fifty seconds. Kevin is first, and on his first run, he drives too fast and holds the steering wheel awkwardly, resulting in him hitting a foam person. After being advised by Andrew to go slower and correct his grip, Kevin quickly masters the forward section, but soon runs into massive difficulties on the reverse section, constantly hitting the obstacles and destroying the car's front bumper. While Andrew concedes that Kevin's glass eye is a major impediment, he also notes that Kevin could try turning his head more, using his mirrors or asking Flora or Diane for help, none of which he does. Before his last run, Lenny gives Kevin some encouragement, but Kevin approaches the run with a defeatist attitude, and this time, can't even complete the forward part. Diane immediately aces the forward section, but ends up clipping a foam person on her first shot at the reverse section, in no small part due to Kevin (who is sat next to her) constantly fidgeting. After getting him to swap with Flora (which also gives the car a better weight distribution) she passes with ease on her second attempt. Flora is the last driver to take the course, and her performance proves to be the worst; like Kevin, she takes two goes to get the forward section right, before a series of ultimately disastrous attempts on the reverse section which see her repeatedly go off the tarmac altogether. She comes close to passing on her second-last run, but ends up crashing into the blocks which make up the starting section. After she goes off the track yet again on her final attempt, Andrew comments that were the title of Canada's Worst Driver decided solely on this challenge, Flora would be the worst.
Mustang Challenge: The Mega-Challenge: This year's Mega-Challenge is a full kilometre in length, and as in most previous years consists of elements from many of this year's challenges. It begins with the drivers having to go through five Eye of the Needle arches, then having to swerve and avoid a foam pedestrian, before having to drive forwards and then backwards through a lengthy course of wheel rims. The drivers then have to do a reverse flick, and then end the run with a handbrake J-turn. Flora gets the first run, and hits every single arch in the Eye of the Needle section before mowing down the foam pedestrian. She then has a bad run through the wheel rim track in both directions, takes her reverse flick much too early and crashes through the outer wall of that part of the course, and then fails to turn at all in the final J-turn, crashing through both the foam Flora that serves as an obstacle, and the outer wall. Diane goes next, and drives far too quickly to begin with, hitting most of the arches on the opening run, though she at least avoids the foam pedestrian. After a comparatively decent run through the wheel rim segment, she then takes her reverse spin-out, but execute it a little too late and clips the far wall. On the final J-turn segment, Diane clips the foam Diane, skids and then goes even further off the course than Flora did. Diane is tearful after this run and proclaims herself Canada's Worst Driver; Andrew admits that he thought she'd do better, but still considers her far from the worst. Kevin also drives far too fast on the first straight; he somehow avoids hitting the first three arches, but completely smashes the last two. This is followed by an abysmal run through the wheel rim section, in which he manages to wedge himself on the rims during the reverse part, requiring Andrew to step in and free the car. On the reverse spin-out, Kevin takes too long to start turning the wheel and doesn't turn it far enough when he does, crashing off-course. When doing the final J-turn, Kevin completely forgets how to do the manoeuvre and hits the footbrake instead of applying the handbrake, losing control and going off the course yet again. Kevin's run is judged to be the worst by Andrew, as he hit more obstacles than Diane and Flora combined.
The Road Test: This year's road test once again takes place on the streets of Hamilton, Ontario, in a convertible version of the Mustang that has been featured throughout the season. Diane is first up and turns in a flawless performance, not making a single mistake (aside from going slightly too slow on the highway) in what Andrew describes as the best Road Test performance in the show's history. During the run, Diane discusses the confidence she has gained from being on the show, and even admits that it has improved her relationship with Stephane. At the run's conclusion, Andrew tells Diane that even without Flora or Kevin having done their runs, she will be this year's final graduate for certain. Flora very quickly starts making basic mistakes, including stopping at every intersection even when the lights are on green, failing to signal, making prohibited turns, making turns from the wrong lane, driving into oncoming traffic, and even driving head-on into a bus depot. She then takes two attempts to get on the highway, missing her first turn after being too nervous to make it. Her actual run on the highway proves relatively uneventful, though she drives well below the speed limit. To cap things off, she even parks several feet away from the pavement at the end of the run. Kevin has the last run, and for the most part, the mistakes he makes are the same as Flora's, making turns from the wrong lane and cutting off other drivers in particular. Andrew also notices that Kevin tends to drift between lanes and very rarely looks in any direction other than straight ahead when driving, which only exacerbates the problem caused by the lack of vision in his right eye. His highway run also goes without major incident, but Andrew again tells him that he needs to be far more observant of the other traffic. As they return to the starting parking lot, Andrew asks Kevin if he really thinks he should be driving, and while Kevin admits that he probably shouldn't be driving, he says that he doesn't intend to give up.
In an obvious decision, Diane becomes the final graduate, with Andrew and the panel describing her as a "model student." It's a different story for Kevin and Flora, though; both are deemed completely unfit to drive by the experts, yet both are adamant that they will never give up their licences. In the final discussion, Tim and Philippe deem Kevin to be the worst, feeling that while Kevin and Flora are equally bad overall, Flora has a slim chance of improving someday, while Kevin's missing eye has proved to be an insurmountable problem on top of his existing issues. Cam and Shyamala, on the other hand, deem Flora to be the worse of the two, feeling that she showed a dismissive attitude toward the entire process, and that while Kevin had at least put some effort into the city drive, Flora made no real attempt to improve her driving. Andrew has the casting vote, but notes on the difficulty of actually deciding who is worse; both passed just two challenges over the course of the whole season, both have nominators who tend to exacerbate their problems (Lenny by not pushing Kevin harder, and Frank by constantly interfering with Flora's driving and giving her bad advice), Flora did worse on the Slalom challenge and Kevin worse on the Mega-Challenge, and both were equally bad (in slightly different ways) on the final Road Test.
This lack of a clear difference between the two leads to an unprecedented decision; both Kevin and Flora are named Canada's Worst Driver, with Andrew giving each a separate part of the trophy and implying that had either one of them volunteered to give up their licence, they would have avoided the title. As the two are driven away by Lenny and Frank respectively, Andrew ends the season on a somber note by voicing his concern that two drivers could be so equally and so terrifyingly bad.