Tesla is facing another proposed class action lawsuit in Quebec, this time over allegations that heat pumps installed in many of its vehicles can fail prematurely in cold weather. The case could affect more than 55,000 Tesla owners across the province and, if successful, could result in damages estimated at up to $400 million.
Filed in Quebec Superior Court on May 13, 2026, the proposed class action targets nearly every Tesla model sold in the province over the last six years, including the Model 3, Model Y, Model S, Model X, and Cybertruck.
The lawsuit is being led by Montreal-based Perrier Avocats and alleges that the heat pumps installed in affected vehicles suffer from a hidden defect that can lead to failures during winter conditions.
According to the filing, first reported by Driving, owners have reported situations where their vehicles either struggle to produce sufficient cabin heat or lose heating altogether. The lawsuit also alleges that defrosting systems can stop functioning unexpectedly, creating visibility concerns when driving in cold or snowy weather.
Unlike a simple comfort issue, the plaintiffs argue that the inability to properly defrost a windshield can become a safety concern by reducing driver visibility and increasing the risk of a collision.
Heat Pump Problems Are Well Known
The heat pump issue is well known to Tesla. During the winter of 2021-2022, hundreds of Canadian owners reported losing cabin heat in extreme cold temperatures, prompting an investigation by Transport Canada.
The issue ultimately led to a safety recall covering vehicles equipped with heat pumps. According to recall documents, Tesla determined the problem was linked to the heat pump’s electronic expansion valve (EXV). Under certain conditions, communication interruptions within the valve’s controller could cause refrigerant to become trapped in the system, eventually leading to a loss of cabin heating, particularly in temperatures below -10°C.
Before the recall was announced, Transport Canada had received more than 170 complaints from owners across seven provinces, with over half of those reports coming from Quebec. Tesla addressed the issue through an over-the-air software update and estimated that approximately 1% of affected vehicles experienced the defect.
However, some owners continued to report heat pump-related issues even after the software fix was deployed, leading to ongoing scrutiny of the system’s cold-weather performance.
The new Quebec lawsuit appears to build on those earlier concerns, alleging that heat pump failures extend beyond the vehicles covered by the 2022 recall and affect a much broader range of Tesla models sold in the province over the last six years.
What Compensation Is Being Sought?
According to information published by Perrier Avocats, the lawsuit seeks more than just reimbursement for repair costs.
The plaintiffs are asking the court to order Tesla to repay owners for expenses related to repairing or replacing defective heat pumps. The claim also seeks a reduction in the purchase or lease price of affected vehicles, arguing that owners paid for vehicles that allegedly contained a latent defect.
In addition, the lawsuit seeks compensation for incidental expenses incurred because of heat pump failures, along with damages related to inconvenience, disruption, and loss of enjoyment of the vehicle. Punitive damages are also being requested, although no specific amount has been publicly disclosed.
If successful, the total damages could top $400 million.
The proposed class includes Quebec consumers who own, previously owned, or leased the following vehicles:
- Model S (2021-present)
- Model 3 (2021-present)
- Model X (2021-present)
- Model Y (2020-present)
- Cybertruck (2023-present)
Potential class members are currently being invited to register with the law firm while the case proceeds through the court authorization process.
Tesla’s Growing List of Quebec Lawsuits
The latest filing adds to a growing number of legal challenges Tesla is already facing in Quebec.
In April 2025, the Quebec Superior Court authorized a class action lawsuit over alleged paint defects affecting Model 3 and Model Y vehicles. That case stems from claims that paint on certain vehicles chipped and peeled prematurely, forcing owners to pay for repairs or install protective film and mud flaps.
Tesla is also defending a separate class action related to Premium Connectivity subscriptions. That lawsuit alleges some Quebec customers purchased vehicles under the understanding that connectivity services were included, only to later face subscription fees to maintain access to those features.
A third proposed class action, filed in 2025, alleges premature suspension and steering component failures on certain Model 3 and Model Y vehicles. That case has not yet been authorized by the court.
As with the other lawsuits, the allegations in the heat pump case have not been proven in court, and the proposed class action must still receive authorization from the Quebec Superior Court before it can proceed.
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