The 2018 season started with a double retirement at the 2018 Rolex 24 at Daytona, in spite of the #22 car leading the race for several laps. At the following race, the 12 Hours of Sebring, the team would bounce back, scoring a win, following a strong late-race drive by Pipo Derani. Following the disastrous weekend during the 6 Hours of Watkins Glen, where the team had used 3 engines, and suffered 2 engine failures, the team scaled down its entry to a single car at the Canadian Tire Motorsport Park. Even after the announcement by Patrón that they were to end its involvement in motorsports, Extreme Speed Motorsports had still aimed and intended to continue its participation in the 2019 season with the car. The team later announced it was to relinquish its exclusivity deal with Onroak Automotive, making the car available for purchase with other teams through Onroak. At the America's Tire 250, held at the WeatherTech Raceway Laguna Seca, the car would score its 4th and final win under ESM, and while Derani would score a pole for his final race with the team at the 2018 Petit Le Mans, the team was unable to repeat its win in the previous edition of the race, with the #22 finishing in 6th, while the #2 car would finish 11th. Following the end of the season, ESM would sell both cars to CORE Autosport, before closing its doors.