Originally, the show's ending always featured a car driving away into darkness as the show's logo and copyright info appeared. Since the seventh season, "MotorWeek '88", began in 1987, it's instead been a graphic of car taillights.
For Seasons 7 to 12, the last two digits of the second year of the season was added to the show's title. Season 7 was dubbed "MotorWeek '88", Season 8 was "MotorWeek '89", and so on.