LA Dept of Transportation info on how to report cars parked more than 72 hours in one place is at: https://prodpci.etimspayments.com/pbw/include/laopm/abandona.html.
Reporting Stored and Abandoned Vehicles. The California Vehicle Code and Section 80.73.2 of the Los Angeles Municipal Code prohibit parking or standing of a vehicle upon any City street, highway or alley for 72 or more consecutive hours. California Vehicle Code 22669 authorizes towing of any vehicle that is inoperable, parked on City streets, and is a public hazard.
These laws are important parking regulations for controlling the storage of vehicles on public streets, highways, and alleys. In some cases, vehicles impounded for storage violations may turn out to be abandoned vehicles.
A Traffic Officer cannot simply tow a vehicle because you file a storage complaint. The Traffic Officer must first inspect and observe the vehicle over a 72-hour period to determine that the vehicle has not been moved. After at least 72 hours have elapsed from the time of inspection and observation, the vehicle may be impounded.
Traffic Officers will immediately tow any vehicle that lacks an engine, wheels, or some other part necessary for safely driving the vehicle.
Stored and Abandoned vehicles are reported in two ways:
Online Request
Citizens may report vehicles stored over 72 hours on City streets and suspected abandoned vehicles by completing the Online Stored and Abandoned Vehicle Report form. The online form is available for immediate use 24 hours a day, seven days a week at https://prodpci.etimspayments.com/pbw/include/laopm/1_800.htm
Call 1-800-ABANDON
The City of Los Angeles established the 1-800-ABANDON hotline to allow citizens to report vehicles stored on the City streets and suspected abandon vehicles.
Between the hours of 8am and 5pm, Monday through Friday, you may call 1-800-ABANDON (1-800-222-6366) and provide the location and description of the vehicle to a Customer Service Representative. Evenings, weekends, and holidays, you may leave a voice mail message with your name and daytime phone number. A Customer Service Representative will return the phone call the following business day.
The Traffic Officer will receive a vehicle investigation work-order the following business day after you file the complaint. Keep in mind that 1-800-ABANDON receives over 300 citizen complaints each day. There may be a delay of several days before the vehicle can be inspected.
Please do not call in or send multiple complaints on a single vehicle during the course of a week. Since each complaint must be fully investigated, multiple complaints may result in several Traffic Officers visiting the same vehicle. This reduces the number of vehicles the Traffic Officers will be able to observe and tow.
Download a pdf of this info here.