When Car Defects Cause Crashes: Can You Sue the Manufacturer?

By Ellie — ON Aug 25, 2025

You can sometimes sue a car manufacturer if a defect in the vehicle caused your accident in Ontario. This type of case falls under product liability law, which is the area of law that makes companies responsible when their products are unsafe and cause harm.

Oakland has been a major transportation hub for a long time. Though initially most of it was focused on the port, now it also extends to its roads. Every day, thousands of trucks, cars, and delivery vans move through Ontario roads. With so many vehicles on the move, any defect in a vehicle can quickly lead to a serious crash.

For example, brake problems on a semi-truck traveling on the I-10 could cause a chain-reaction accident affecting multiple drivers.

People need to know that when a manufacturer’s error causes a crash, they are not powerless. They have rights, and legal options are available to hold those companies accountable. If you live in this area and are hurt in a defective vehicle crash, speaking with an Ontario car accident attorney can help you avoid facing the costs alone and get fair compensation.

What Is Product Liability?

Product liability is the legal responsibility companies have when they release unsafe products. For cars, this means manufacturers must design, build, and market vehicles that are safe for consumers. If something goes wrong and a defect leads to injury, the law allows victims to seek compensation.

There are three main categories of auto defects:

Design defects: The vehicle’s design itself is flawed from the beginning. Even if every car is built correctly, the design makes it unsafe.
Manufacturing defects: Mistakes happen while building or assembling the car, such as poor materials or faulty installation of a part.
Marketing defects: The company fails to give proper warnings or instructions, leaving drivers unaware of certain risks.

How Do Defective Cars Cause Accidents?

Defects in cars are not just small problems—they can directly lead to crashes. If a part does not work as expected, the driver may lose control, or safety systems may fail to protect passengers. Here are some common ways defects cause harm:

Brake failure: If brakes don’t work properly, drivers cannot stop in time.
Tire blowouts: Poorly made tires can burst at high speeds, causing loss of control.
Airbag malfunctions: Airbags that don’t deploy or deploy too forcefully can cause serious injuries.
Steering issues: Faulty steering systems make it impossible to control the vehicle.
Accelerator problems: A stuck accelerator can cause unintended acceleration and collisions.

When and How Can You Sue the Manufacturer?

You may sue the manufacturer if you can prove:

The defect existed when you bought or used the car.
The defect caused or contributed to your accident.
You suffered injuries or damages as a result.

Different types of legal claims may apply, including strict liability, negligence, or breach of warranty. Strict liability is the most common because you do not need to prove the company acted carelessly, just that the defect existed and caused harm.

Proving fault requires evidence. Here’s what usually matters:

Documenting the defect: Collect records, photos, or the defective part itself.
Showing causation: Use accident reports or expert testimony to show the defect caused the crash.
Proving injury: Provide medical records, hospital bills, and proof of property damage.

Without evidence, it’s harder to hold the manufacturer accountable. That’s why lawyers often work with engineers, accident reconstruction experts, and medical specialists to strengthen a case.