UCLA researchers say the deeper problem was never just social media. Certain Kia and Hyundai vehicles remain physically vulnerable to theft, and as those cars age and change hands, the risk could move into different Los Angeles communities.
The viral videos may be gone from the center of public attention.
The vulnerability they exposed is not.
A new UCLA study examining theft patterns in Los Angeles finds that the surge involving certain Kia and Hyundai models could continue for decades — not because the “Kia Boys” social-media trend is still driving theft, but because the affected vehicles remain on the road.
The researchers estimate that thefts of vulnerable models could remain elevated through at least 2042, with effects potentially extending toward 2050 as the vehicles gradually disappear from the fleet.
That changes the question for Los Angeles.
It is no longer simply why these cars became a viral theft target.
It is who will inherit the risk as those cars age and move through the used-car market.
The vulnerability came before the viral videos
The study, published in the International Journal of Forecasting, examined the rise in thefts of certain Hyundai and Kia models using Los Angeles Police Department data and a model designed to forecast how vehicle theft patterns change over time.
The affected vehicles were produced between 2011 and 2022 and lacked an engine immobilizer, an anti-theft system that prevents a vehicle from starting without an authorized key.
That missing protection created an unusually low barrier to theft.
Social media later helped amplify the problem. But the UCLA researchers found that the increase in Los Angeles began before the viral “Kia Boys” phenomenon reached its peak.
The study says the early increase was tied to a combination of factors, including the underlying vehicle vulnerability and changes during the COVID-19 pandemic. Traditional media coverage and social media then helped spread awareness of the vehicles as easy targets.
Social media helped spread the problem. It did not create the physical vulnerability.
The risk can move when the car moves
One of the study’s most important findings is also one of its most practical.
Cars do not stay in the same neighborhoods throughout their lives.
Newer vehicles are more likely to begin in higher-income areas. As they age, lose value and enter the used-car market, they can move through successive owners and into lower-income communities.
The UCLA researchers’ model suggests that theft hotspots can follow that vehicle movement.
In other words, the problem does not necessarily disappear when a neighborhood’s original owners stop worrying about the vehicles.
The vulnerable cars themselves move.
The researchers say that pattern could increasingly concentrate theft involving these Kia and Hyundai models in lower-income communities as the vehicles age.
That does not mean every lower-income neighborhood will experience the same level of theft, or that income alone determines where crime occurs.
It means the researchers’ model identifies a potential geographic shift tied to the changing location of vulnerable vehicles.
For Los Angeles, that makes the used-car market part of the public-safety story.
That distinction also matters in a city where broader crime trends can sometimes obscure how safe residents actually feel. Parriva has previously explored that gap in why many Latino families still do not feel safe even as some Los Angeles crime measures fall.
The “Kia Boys” phenomenon became highly visible because social media turned a vehicle vulnerability into a recognizable national story.
But trends on social media can disappear much faster than vehicles disappear from the streets.
The UCLA model treats the vehicles almost like a moving population.
New vulnerable cars entered the fleet. Existing cars changed owners. Older vehicles were eventually scrapped.
Until that last stage occurs at sufficient scale, the underlying vulnerability remains attached to the cars.
That is why researchers project elevated theft activity for vulnerable models through at least 2042, with the effects potentially continuing toward 2050. The International Journal of Forecasting study and theft forecast
The forecast is a model, not a guarantee.
Actual theft levels will depend on factors including how many vulnerable vehicles remain on the road, how many receive security upgrades, how the used-car market changes and how theft patterns evolve.
But the central finding is durable:
A viral crime trend can fade long before the physical conditions that made the crime possible disappear.
There is also a separate accountability question now moving through the federal courts in California.
On Sept. 14, the U.S. Court of Appeals for the Ninth Circuit reversed a lower-court dismissal involving insurance companies seeking recovery for losses associated with thefts and attempted thefts of certain Hyundai and Kia vehicles.
The case involves roughly 200 insurance companies and allegations concerning 2011–2022 vehicles that lacked engine immobilizers.
But the ruling does not establish that Hyundai or Kia are legally responsible for those losses.
The Ninth Circuit’s decision addressed whether the Korean manufacturers could be subject to personal jurisdiction in California. The court concluded that the insurers had adequately alleged California connections at this stage and sent the case back to the lower court.
That means the underlying claims remain to be resolved.
For California consumers and insurers, however, the ruling puts the alleged vehicle-design issue back into active litigation.
What owners can do now
For people who own an affected vehicle, the practical question is simpler: Is your specific car eligible for an anti-theft update or other protection?
Hyundai says it has offered a free anti-theft software upgrade for eligible vehicles and provides a VIN-based eligibility check through its
Owners should also check their manufacturer’s recall and security-program information and ask a dealer whether their specific vehicle has an engine immobilizer or qualifies for an available security upgrade.
The UCLA researchers recommend using a visible steering-wheel locking device on vulnerable older models and checking for an immobilizer when buying a used vehicle.
For a used-car buyer, that question can be especially important.
The vehicle may be several owners removed from the person who originally bought it — but the vulnerability travels with the vehicle.
The bigger lesson for Los Angeles
The Kia and Hyundai theft story is easy to remember as a story about TikTok, viral videos and a nickname.
The UCLA research points to something longer-lasting.
The social-media phenomenon was one chapter.
The physical vulnerability was the underlying condition.
And as the cars age, the people living with that vulnerability may change.
That is why the most important question may no longer be where the “Kia Boys” trend started.
It is what happens when a vulnerable car changes hands.
Who inherits the risk?
