For most drivers, floor mats are just a trivial interior accessory for catching dirt. But a poorly fitted, shifted, or deformed mat can jam the brake or accelerator pedal mid-drive, leading to loss of vehicle control. These are not hypothetical risks — there are multiple documented real-world incidents.

Real Incidents Caused by Floor Mat Pedal Obstruction

In 2015, a white sedan in Fengtai District, Beijing suddenly lost control. It traveled over 200 meters across a parking lot and public road, crashing through six guardrails and damaging multiple vehicles. A post-accident investigation concluded the root cause: a floor mat had slid under the brake pedal, preventing the driver from fully depressing the brakes.

A similar crash took place in the busy downtown area of Sanshan Street, Nanjing. A vehicle veered abruptly onto the sidewalk, striking 2 cyclists and 4 pedestrians. Follow-up checks confirmed that a bunched wool floor mat had become wedged beneath the brake pedal.

Even luxury automakers have formally acknowledged this risk. In 2012, Mercedes-Benz recalled nearly 9,000 ML-Class vehicles in the United States. The recall was issued due to insufficient fit between factory floor mats and the vehicle floor, which could cause the accelerator pedal to become trapped.

Why Do Floor Mats Cause Pedal Entrapment?

Floor mat-related pedal jams are almost never random. They nearly always trace back to one of three common causes.

1. Mismatched Sizing: Universal vs. Custom-Fit Mats

Vehicle-specific floor mats are precision-molded to match the exact floor contours of a particular make, model, and model year, sitting flush and securely in the footwell. Universal floor mats, by contrast, only follow approximate dimensions. They often hang over edges or fail to align with the footwell shape. Some drivers force them into place by bending the edges — and those bent edges can sit directly in the path of the pedal linkage.

2. Material Deformation Over Time

Floor mats wear out with regular use. After months or years of foot traffic, corners may curl upward and the material may warp or shift out of shape. A curled edge that intrudes into the pedal’s range of motion can jam the accelerator in the open position, or prevent the brake pedal from fully depressing.

3. Double-Layered Mats: An Overlooked Safety Hazard

Some drivers add a second floor mat on top of the factory mat for easier cleaning. This practice carries a far higher risk than most people realize. The top mat has no secure anchoring, so it slides forward gradually during normal driving, eventually shifting into the pedal area. Multiple vehicle owner’s manuals explicitly warn: never install double floor mats in the driver’s footwell.

What to Do If a Pedal Gets Stuck While Driving

If you experience a stuck accelerator or unresponsive brake while driving, follow these steps to minimize risk.

First, stay calm and keep steady control of the steering wheel. Maintaining directional control is your top priority before addressing the pedal issue.

If the accelerator pedal sticks open

Quickly shift the transmission into Neutral (N) to cut engine power to the drive wheels.

Apply the brakes firmly to bring the vehicle to a safe, controlled stop, then turn off the engine.

Do not attempt to reach down and hook the pedal back with your foot. Looking down or reaching under the dashboard at driving speeds is extremely dangerous.

If the brake pedal feels hard or won’t fully depress

Press down hard on the brake pedal, without hesitation. Automotive brake systems have a mechanical backup — firm, steady pressure will still generate stopping force even if pedal travel is reduced.

If full brake function is lost, use engine braking (downshift to lower gears) and the parking brake (applied gradually) to slow the vehicle, then guide it to a safe stopping point off the road.

After stopping safely

Turn on your hazard lights.

Adjust or reposition the floor mat, and only move the vehicle again once you confirm full pedal function.

If a stuck accelerator caused sustained high engine RPM, turn off the engine immediately and contact roadside assistance or a professional mechanic for inspection.

4 Simple Steps to Minimize Floor Mat Safety Risks

Reducing the danger takes only 30 seconds of regular attention. Follow these four rules.

Choose vehicle-specific custom-fit mats Custom-fit mats are not always the most expensive option, but they are consistently safer than universal designs. Always verify that the product is specified for your vehicle’s exact make, model, and model year before purchasing.

Secure mats with factory retention hardware If your vehicle has built-in floor mat hooks or clips, use them. Mazda’s owner’s manual explicitly warns that unsecured floor mats can interfere with pedal operation and cause accidents. General Motors has issued similar safety guidance, stressing that factory floor mats must be installed using the vehicle’s original retention system.

Never use double floor mats on the driver’s side This warning appears in official safety notices from multiple automakers, and it carries the same level of importance as basic seatbelt use.

Inspect your mats on a regular basis Check for curled edges, material warping, or loose retention clips. A quick check after every car wash takes almost no time, and can prevent a serious hazard.

The Beijing incident ended with a vehicle traveling over 200 meters out of control. The Nanjing incident caused injuries to pedestrians in a busy urban area. Mercedes-Benz issued a recall for nearly 9,000 vehicles over this exact risk.