Tesla Model 3 Rear-End Collision with Semi-Truck: What Drivers Should Know?

A federal Special Crash Investigation by the NHTSA recently looked at a rear-end collision in which a Tesla Model 3 running an advanced driver-assistance system struck a semi-truck. Investigators dug into the vehicle’s data logs, the road and weather conditions, and how the automated system performed in the moments before impact. The early picture was a familiar one: a mix of human, environmental, and technological factors, and a driver-assist system that did not detect or respond to the truck in time to prevent the crash.

That case happened out of state, but it raises a question that matters a great deal for Missouri drivers. When a vehicle relying on automated technology crashes into a semi-truck, who is actually responsible? Under Missouri law, the answer is often not just one party. It can be the driver, the trucking company, the technology’s manufacturer, or some combination of all three. Here is how a Missouri lawyer looks at it.

Can the Driver Still Be Liable if Autopilot Was On?

Yes. This is the first myth to clear up. Turning on Autopilot, or any driver-assist system, does not hand your legal responsibility over to the car. Missouri holds every driver to the highest degree of care behind the wheel, and these systems are designed to assist a driver, not replace one. A driver who stops paying attention, takes their hands off the wheel, or over-relies on the technology can still be found negligent when a crash follows. So if a Tesla on Autopilot rear-ends a truck because the person behind the wheel was not watching the road, that driver’s liability is very much on the table.

When Is the Trucking Company Responsible?

A semi-truck is rarely just a vehicle. It is usually part of a business, and that changes everything. If the truck contributed to the crash, say it was stopped in a travel lane, poorly lit, improperly marked, or driven carelessly, the company behind it may be liable, not just the driver.

Under Missouri law, an employer is generally responsible for the negligent acts of an employee acting within the scope of their job, through a doctrine called respondeat superior. On top of that, commercial trucks answer to federal safety rules under the FMCSA covering maintenance, lighting, reflective markings, hours of service, and more. When a violation of those rules helps cause a wreck, it becomes powerful evidence against the trucking company. These companies also tend to carry far larger insurance policies than an individual driver, which can matter enormously in a catastrophic crash.

Can You Sue the Manufacturer of the Automated System?

Often, yes, and this is the part many people miss. When a driver-assist or automated system fails to perform the way it was sold to perform, the case can move beyond ordinary negligence into product liability against the manufacturer.

Missouri recognizes strict product liability under RSMo 537.760 and the statutes that follow it. In plain terms, if a product was sold in a defective condition that made it unreasonably dangerous, and that defect caused injury, the maker or seller can be held responsible regardless of how careful they claim they were. A collision-avoidance system that fails to brake for a semi-truck directly in its path is exactly the kind of failure that can support a product liability claim. And because manufacturers have deep pockets, this is frequently the largest potential source of compensation in a serious automated-vehicle crash.

How Does Missouri Divide Fault Among Everyone Involved?

This is where having a plan matters. Missouri follows a pure comparative fault system, which means fault can be split among multiple parties and your own recovery is reduced only by your percentage of blame, never erased just because you share some. In a crash like this, a jury could assign part of the fault to the Tesla driver, part to the trucking company, and part to the system’s manufacturer.

In multi-defendant cases, Missouri’s joint and several liability rule under RSMo 537.067 also comes into play: a defendant found 51 percent or more at fault can be held responsible for the entire judgment, while a defendant below that threshold pays only their share. Proving how that fault should be divided, with data logs, the police report, trucking records, and expert reconstruction, is the heart of one of these cases and a big reason they are not do-it-yourself claims.

What Should You Do After a Crash Involving an Automated Vehicle?

The basics still apply, and they matter more than ever when technology is involved. Get everyone to safety and check for injuries. Call law enforcement and make sure a report is filed. Photograph the vehicle positions, the damage, the truck and its markings, and the road and lighting conditions. Exchange information and get witness contact details. Then get medical care promptly, even if you feel okay, because serious injuries do not always announce themselves right away.

One extra step unique to these cases: the vehicle’s own data is evidence. Telematics, event data recorders, and the automated system’s logs can tell the real story of what happened in the final seconds, and that data needs to be preserved before it is lost or overwritten. The sooner a lawyer gets involved, the better the chance of locking it down.

Related Trends and Recalls

What are the current trends in vehicular safety, and how might they influence recalls?

Understanding trends in rear-end collisions highlights areas for safety improvement. Recent analysis shows increased reliance on ADAS; however, its technology still needs refinement to address all driving scenarios effectively. NHTSA’s continued focus on vehicle recalls aims to address defects that could lead to such crashes.

Keeping informed about recalls is crucial. Vehicle owners can check for safety recalls using NHTSA’s recall database to ensure their vehicles adhere to safety standards. Proactive management of recalls and understanding evolving vehicular trends are essential to ensure ongoing road safety and legal compliance.

For further information on related topics, visit our NHTSA Investigations blog.

Frequently Asked Questions

If my car was on Autopilot, is the crash automatically my fault?

No. Driver-assist systems are meant to assist, not replace, the driver, and Missouri still holds drivers to the highest degree of care. Depending on the facts, fault may rest with the driver, the trucking company, the technology manufacturer, or a combination.

Can I sue Tesla or another manufacturer for a crash?

Potentially. If an automated or collision-avoidance system failed to work as it was sold to work, Missouri product liability law may allow a claim against the manufacturer, which is often the largest source of compensation in a serious case.

Why is the trucking company important if the Tesla hit the truck?

Because the truck’s own conduct may have contributed, for example by being stopped in a lane or poorly marked, and the company can be liable for its driver and for violations of federal trucking safety rules. It also usually carries much larger insurance.

What if I was partly at fault?

Missouri uses pure comparative fault, so you can still recover with your award reduced by your percentage of fault. In multi-party crashes, how that fault is divided is often the central fight.

What evidence matters most in an automated-vehicle crash?

The vehicle’s data logs and event data recorder, the police report, the truck’s records and maintenance history, photos, and witness accounts. Much of this can be lost quickly, so preserving it early is critical.

 

Award-Winning Personal Injury Lawyer Recognized for Excellence in Missouri

At Mutrux Firm Injury Lawyers, the results we achieve are reflected in the experiences of our clients and the recognition we have received in the community.

Tyson Mutrux is licensed to practice in Missouri, Illinois, and U.S. Federal Courts. He takes every case seriously, representing individuals in serious injury claims with precision and care.

Before Tyson Mutrux became one of Missouri’s most effective personal injury lawyers, he served in the U.S. Army as a Non-Commissioned Officer. He graduated with distinction from the Non-Commissioned Officers Academy and received the Army Commendation Medal for exceptional service.

The military taught him discipline, precision, and the importance of planning three moves ahead. Those same principles guide his approach to every case today.

Over the years, he has earned notable recognition, including:

• Selected for Super Lawyers (2024 – 2026).
• Best Injury Lawyer in Columbia, Inside Columbia Magazine (2025).
• Top 10 Car Accident Lawyers in Columbia, Trust Analytica (2024).
• Best Car Accident Lawyer in Columbia, Expertise.com (2023).
• The Nation’s Top One Percent of Attorneys, National Association of Distinguished Counsel (2015).
• Top 100 and Top 40 Under 40, The National Trial Lawyers (2014).
• Superb (10/10) Rating, Avvo (2012).
• U.S. Army Commendation Medal.

Beyond awards, Tyson’s reputation is reflected in the voices of the clients he has served. His attention to detail, clear communication, and consistent results have earned him numerous five-star Google reviews from injury victims across St. Louis, Columbia, and throughout Missouri and Illinois.

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We serve clients across Missouri and Illinois, with dedicated offices in St. Louis and Columbia.

How Mutrux Firm Injury Lawyers Can Help?

Crashes that involve a semi-truck and an automated vehicle are among the most complex claims on the road. They can involve a driver, a trucking company, and a technology manufacturer all at once, each with its own lawyers and insurers, and each trying to push the blame elsewhere. That is the kind of case Tyson Mutrux and our team are built for, identifying every responsible party, preserving the vehicle data, and holding the right defendants accountable under Missouri law. We handle truck accident and car accident claims on a simple promise: No Fees Unless You Win.

If you were hurt in a crash involving a semi-truck or an automated vehicle in Missouri, call (888) 550-4026 for a free case investigation.