"Cars 2" received criticism for several reasons. Many fans felt it strayed too far from the heartwarming themes of the original "Cars" and focused too heavily on action and espionage, which seemed out of place for a film aimed at children. The plot was considered convoluted and less engaging, with some viewers feeling that it prioritized merchandising over storytelling. Additionally, the character development was lacking, particularly for Lightning McQueen, who took a backseat to Mater's storyline. These factors contributed to its mixed reviews.

Doc Hudson, voiced by Paul Newman, was not in "Cars 2" due to the actor's passing in 2008. The filmmakers decided to honor Newman's legacy by not recasting the role, as they felt it would not be respectful to his iconic portrayal of the character. Instead, the story shifted focus to Lightning McQueen and Mater's international adventure, which meant Doc's absence was also a narrative choice to explore new characters and themes.

"Cars 2," released in 2011, received mixed reviews from critics and audiences, making it one of Pixar's less acclaimed films. While it grossed over $560 million worldwide, it was considered a commercial success, it didn't reach the same critical heights as other Pixar films. The movie's focus on action and espionage diverged from the original's heartfelt storytelling, leading to disappointment among some fans. Overall, it can be viewed as a commercial hit but a creative disappointment compared to its predecessor.

"Cars 2," released in 2011, follows the main character Lightning McQueen and his best friend Mater as they travel to Japan and Europe for the World Grand Prix. The film shifts focus from racing to a spy adventure, where Mater inadvertently becomes involved in international espionage. The plot centers on a conflict between alternative fuel sources and traditional gasoline, with Mater mistakenly becoming a secret agent. The movie explores themes of friendship, loyalty, and self-identity, diverging from the original film's emphasis on racing.