Factual error: The Cielo address is mentioned in the movie as being in Hollywood. It was actually in the Benedict Canyon section of Beverly Hills, several miles away from Hollywood.
Other mistake: When Cliff picks up Pussycat off the street, he mentions about picking her up on Burbank Blvd to take her to Chatsworth. This entire route would start and end in the San Fernando Valley, but when the journey begins, they enter the 101 freeway from Hollywood Blvd (nearly 10 miles away from anywhere near the route).
Continuity mistake: When Sharon walks into the theatre Joe Nameth and Ann Margaret's names appear twice in the movie playing. (01:07:00)
Factual error: Pitt rides a triumph motorcycle which has a disk brake fitted to the front wheel. Disk brakes were not released on the market, for any motorcycle manufacturer until 1973. This film is set in 1969. The motorcycle would have been fitted with a drum front brake.
Factual error: Most of the eyewear used has anti glare coating on the lenses, not used until the early 80's.
Factual error: Pandora's Box is shown as part of a driving montage, but Pandora's Box was demolished in 1967, two years before the 1969 setting of the movie.
Factual error: In the parking lot near the start, there is a blue VW Super Beetle with a curved windshield. The curved windshield debuted on the Super Beetle in 1973. This film is set in 1969. (00:14:58)
Revealing mistake: As Cliff walks his dog down the street, and out of camera view, the hippies' car headlights can already be seen reflected in the back end panel of the parked car along the street (waiting for their cue). The car headlights are fixed, as the car stands still "parked" for several moments before pulling into frame when Cliff exits stage right.Hurley_Burly
Factual error: In the beginning of the film, an aerial shot shows Cliff and Rick pulling out of a studio parking lot. The lines in the lot are yellow double lines between spaces. They didn't use that type of striping in parking lots in the 1960's. The parking lot striping was white with single stripes in between spaces.