Reliability in question: the batteries of certain Tesla Model 3 and Y under scrutiny

Electric vehicles, admired for their innovation and environmental friendliness, are not immune to technical issues. Recently, major concerns have emerged regarding the reliability of the batteries equipping some Tesla Model 3 and Y, particularly those manufactured by LG in China. These revelations raise questions not only about the quality of production controls but also about Tesla's supply chain strategy. What is really wrong with these batteries?

An alarming report: LG batteries at the forefront

EV Clinic, a renowned research and repair center, has published a worrying report on the LG NCM811 batteries. These cells, used in various versions such as Long Range and Performance, show an alarming failure rate. While Panasonic batteries, produced in the United States, achieve an impressive lifespan of 400,000 km before encountering significant failures, LG batteries do not measure up. On average, they show signs of degradation as early as 240,000 km. The difference in quality is striking, resulting in non-negligible consequences for users and repair professionals.

A blatant performance gap

Analyses prove the existence of a notable performance gap between batteries from different suppliers. Here is an overview of the statistics:

These figures clearly reveal that LG batteries have a significantly lower lifespan and very limited repairability, complicating life for Tesla owners. For those considering a purchase, these factors must absolutely be taken into account.

The stakes of repair and costs

Beyond battery performance, the issue of repair is crucial. Interventions on LG batteries are often considered "unrepairable" by specialists. For example, a repair professional might discover that replacing a faulty module is a "non-viable" operation due to the widespread nature of the degradations. Thus, when a cell no longer functions, it is highly likely that others will fail shortly after.

• 🚗 Making repair decisions can be costly.
• ⚠️ The need to replace the entire pack can pose a serious financial issue for the owner.
• 😂 "Feasibility fees" are now a reality to analyze the possibility of repairs.

It is therefore advisable for drivers of models affected by these issues to carefully evaluate their options. Opting for a replacement with used Panasonic batteries or requesting a replacement from Tesla itself seems to be wise solutions to consider.

The economic impact on the repair sector

The financial impact for repair professionals is significant, with losses exceeding 20,000 euros per month for unprofitable interventions. The industry faces a real challenge: how to remedy this situation that undermines the income of repairers while maintaining quality service?

The recommendations made by EV Clinic are clear: the priority should be to opt for higher quality batteries, such as those provided by Panasonic, to avoid future disappointments.

Current context of supplier diversification

In a context where Tesla is actively diversifying its battery supply chain, these problems raise questions about their strategic choices. CATL's LFP batteries show promising results, indicating potential for improvement. However, NCM chemistry seems to be a thorn in the side. The experience accumulated by Tesla over time could help it navigate these complications more effectively.

• 🔋 The integration of new battery technologies could improve durability.
• 🌍 The requirements for quality control will need to be rigorously applied.
• 🔧 The adoption of more sustainable production practices could defuse criticism related to LG batteries.

These strategic choices should not be underestimated. As the industry evolves, consumer expectations regarding reliability and durability of batteries should continue to evolve towards greater demands.

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