NHTSA Preliminary Evaluation: Lane Keep Assist System in 2023-2024 VinFast VF 8 (PE24-025)
Opened September 10, 2024 · VinFast Auto, LLC
NHTSA opened a preliminary evaluation (PE24-025) on September 10, 2024 into lane keep assist system in 2023-2024 VinFast VF 8. The investigation is closed on October 21, 2025 and led to recall 25V559000.
PE24-025 at a glance
| NHTSA action number | PE24-025 |
|---|---|
| Type | Preliminary Evaluation |
| Opened | September 10, 2024 |
| Status | Closed October 21, 2025 |
| Vehicles | 2023-2024 VinFast VF 8 |
| Component | Lane Departure > Lane Keep > Automatic Steering |
| Manufacturer | VinFast Auto, LLC |
| Resulting recall | 25V559000 |
What is NHTSA investigating in the VinFast VF 8?
From NHTSA’s investigation summary:
On September 10, 2024, the Office of Defects Investigation (ODI) opened Preliminary Evaluation (PE) 24025 to assess allegations of lane departures with the Lane Keep Assist (LKA) system engaged in Model Year (MY) 2023 through 2024 VinFast VF8 vehicles.
The reports further alleged that the system exhibited difficulty detecting lanes on the roadway and, under certain conditions, provided improper steering inputs that resulted in an inconsistent control effort required by the driver, potentially elevating the risk of a crash or injury.
To date, ODI has received a total of 17 related Vehicle Owner Questionnaires (VOQ) of the LKA system in the subject vehicles.
As a part of the investigation, NHTSA's Vehicle Research and Test Center (VRTC) replicated the VOQ- reported conditions in a MY 2024 VinFast VF8.
VRTC documented that two conditions within the MY 2024 VinFast VF8 LKA system may induce the vehicle to deviate laterally outside of the intended travel lane when navigating sweeping roadway curves.
First, during sweeping turns, the steering wheel force required may abruptly change mid-turn, altering the steering wheel force equilibrium between driver input and roadway force, potentially causing the driver to unintentionally steer excessively leading vehicle to cross over its lane boundaries.
Second, the LKA system may apply steering inputs to maintain the curve that move the vehicle toward the inside lane line and, in some cases, across the lane boundary, increasing the risk of a collision.
On August 27, 2025, VinFast filed NHTSA Recall No. 25V-559 to address the safety-related defect in the LKA system.
This recall consists of a software update that is intended to refine the system's steering control and improve the overall driving smoothness.
Specifically, the software update will: (i) reduce steering wheel vibration during the activation of the vehicle's advance driver-assistance system (ADAS); (ii) make it easier for the driver to override the ADAS; and (iii) smooth the transition between an active and inactive LKA system, so that driver inputs deactivating the system may not cause unintended vehicle maneuvers.
Because this recall action is taken by VinFast, ODI is closing PE24025.
NHTSA reserves the right to take additional action if warranted by future circumstances.
To review the ODI reports cited in the Closing Resume ODI Report Identification Number document, go to NHTSA.gov.
The opening resume identified VOQ #11585817 as a fatal crash involving a vehicle roadway departure at high speed.
ODI's analysis found the crash conditions are not consistent with those observed during VRTC testing for this investigation.
The subject vehicle's Event Data Recorder (EDR) sustained fire damage during the collision, rendering the recorded data inaccessible at this time.
ODI has no evidence linking this crash to the LKA behavior identified in PE24025 and will continue to monitor for any additional information that might warrant further assessment of this incident.
What is a preliminary evaluation?
Preliminary Evaluation is the first stage of a federal defect investigation. NHTSA reviews complaints, crash reports and manufacturer data to decide whether a safety defect may exist. It can close with no action, be upgraded to an engineering analysis, or end with a recall.
Did this investigation lead to a recall?
Yes. NHTSA lists recall 25V559000 as the result of this investigation: 2023-2025 VinFast VF 8 Automatic Steering Recall (25V559).
Which vehicles are part of this investigation?
| Model years | Make | Model |
|---|---|---|
| 2023-2024 | VinFast | VF 8 |
What are VinFast VF 8 owners reporting to NHTSA?
NHTSA’s public database lists 57 owner complaints filed since 2020 for the vehicles in this investigation (all components). Complaints are unverified owner reports.
What should owners do?
- Check your VIN at nhtsa.gov/recalls for any open recall on your vehicle.
- If you have the problem NHTSA is investigating, take the vehicle to a dealer now and get a repair order, even if the dealer cannot find anything.
- Keep a log of every time the problem happens: date, mileage and what happened. Photos and videos help.
- File your own complaint at nhtsa.gov/report-a-safety-problem. Owner complaints are what start and expand investigations.
- If the problem keeps coming back, talk to a lemon law attorney.
Recalls on the same vehicles
Can a recall or defect investigation make my car a lemon in California?
Not by itself. What matters is whether a covered defect keeps coming back or keeps your vehicle at the dealer, and a federal investigation or recall is strong evidence that the problem is real.
Under California’s Song-Beverly Consumer Warranty Act, a manufacturer that cannot fix a warranty defect that substantially impairs a vehicle’s use, value or safety within a reasonable number of attempts may have to repurchase or replace it (Civ. Code 1793.2(d)). Within the first 18 months or 18,000 miles, the law presumes a reasonable number of attempts after two repairs of a defect likely to cause death or serious injury, four repairs of the same defect, or more than 30 days out of service (Civ. Code 1793.22(b)).
An owner who prevails can recover reasonable attorney fees and costs from the manufacturer (Civ. Code 1794(d)). You pay nothing, win or lose. We are paid only if you win, and the manufacturer pays our fees, including in settlements. If a case is lost, our firm covers the costs.
In our cases, a recall repair visit counts as a repair attempt, and it's strongest when the owner complained about the problem before the recall came out. A recall shows the defect is real and that enough owners reported it for the manufacturer to issue a fix.
The biggest mistake I see is waiting too long. The mileage offset starts at your first repair visit for the problem, so the sooner you take it in, the better. If the problem comes and goes, take it in when it happens. You can't go back to that date later.
If you get a recall notice, call a lemon law attorney right away. You may have taken the car in for the same problem before and forgotten, or there may be other recalls related to it.
Jacob Shayesteh, Esq. (SBN 362320), Founder and Managing Attorney. Quotes lightly edited for clarity. Prior results do not guarantee a similar outcome.
Frequently asked questions
Does the recall fixing my car mean I have no case?
Not necessarily. Even if the recall repair fixed it, you may still have a case, and a car that's a year or more old can still qualify.
Do used cars qualify for California lemon law?
We take certified pre-owned, demo and dealer vehicles. Since the California Supreme Court's Rodriguez decision in 2024, ordinary used cars generally do not qualify.
How long does a recall lemon law case take?
Recall-related cases typically resolve in one to three months from your first call. Prior results do not guarantee a similar outcome.
What does a lemon law attorney cost?
You pay nothing, win or lose. We are paid only if you win, and the manufacturer pays our fees, including in settlements. If a case is lost, our firm covers the costs.
Sources
- NHTSA investigation, recall and complaint data, accessed October 7, 2026
- California Civil Code 1793.22
Jacob Shayesteh, Esq., Founder and Managing Attorney of America’s Lemon Lawyer (Wynn Law Group, APC). Licensed by the State Bar of California, No. 362320. His practice focuses on California lemon law under the Song-Beverly Consumer Warranty Act.
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Attorney advertising. America’s Lemon Lawyer is a trade name of Wynn Law Group, APC. Responsible attorney: Jacob Shayesteh, Esq. (SBN 362320). This page reports public NHTSA data and is general information, not legal advice. Not affiliated with NHTSA or any vehicle manufacturer. Prior results do not guarantee a similar outcome.