Lars and the Real Girl received positive reviews from critics, especially for Gosling's performance. On the review aggregator
Rotten Tomatoes, the film has a score of , based on reviews from critics, and an average rating of . The site's critical consensus states, "
Lars and the Real Girl could've so easily been a one-joke movie. But the talented cast, a great script, and direction never condescend to its character or the audience." On
Metacritic, the film has a
weighted average score of 70 out of 100, based on 32 reviews.
Roger Ebert of the
Chicago Sun-Times awarded the film three and a half out of four and observed, "The film wisely never goes for even one moment that could be interpreted as smutty or mocking. There are so many ways [it] could have gone wrong that one of the film's fascinations is how adroitly it sidesteps them. Its weapon is absolute sincerity. It has a kind of purity to it."
Mick LaSalle of the
San Francisco Chronicle called the film "a gentle comedy, offbeat but never cute, never lewd and never going for shortcut laughs that might diminish character."
Manohla Dargis of
The New York Times said, "American self-
nostalgia is a dependable racket, and if the filmmakers had pushed into the realm of nervous truth, had given Lars and the town folk sustained shadows, not just cute tics and teary moments, it might have worked. Instead the film is palatable audience bait of average accomplishment that superficially recalls the plain style of
Alexander Payne, but without any of the lacerating edges or moral ambiguity."
Kenneth Turan of the
Los Angeles Times described it as "the sweetest, most innocent, most completely enjoyable film around," "a film whose daring and delicate blend of apparent irreconcilables will sweep you off your feet if you're not careful. The creators of this film were fiercely determined not to go so much as a millimeter over the line into sentiment, tawdriness or mockery. It's the rare film that is the best possible version of itself, but
Lars fits that bill." Alissa Simon of
Variety stated, "Craig Gillespie's sweetly off-kilter film plays like a Coen brothers riff on
Garrison Keillor's
Lake Wobegon tales, defying its lurid premise with a gentle comic drama grounded in reality ... what's fresh and charming is the way the characters surrounding the
protagonist also grow as they help him through his crisis." In 2021, members of
Writers Guild of America West (WGAW) and
Writers Guild of America, East (WGAE) voted the film's screenplay 96th in WGA's 101 Greatest Screenplays of the 21st Century (so far). ==Accolades==