2018 Tesla Model X Reliability Report

Owners report frequent issues with the forward collision avoidance system in the 2018 Tesla Model X, particularly involving phantom braking and failure to prevent collisions. Complaints commonly describe sudden, unnecessary braking while using cruise control or autopilot, often at highway speeds, with some incidents occurring multiple times over long trips. Crashes are reported in four instances, one involving an injury, where the system either failed to brake or unexpectedly veered into other vehicles. These issues appear across various mileages, with some owners noting repeated occurrences since 2021. Potential buyers should be aware of these reported safety concerns, as they might impact the reliability and safety of the vehicle.

Owners of the 2018 Tesla Model-X frequently report issues with vehicle speed control, particularly involving sudden unintended acceleration and unexpected braking. Complaints often describe the vehicle accelerating on its own, sometimes while parking or at low speeds, leading to crashes, with some incidents resulting in injuries. Sudden braking incidents are also noted, often occurring while using cruise control or autopilot, with the vehicle unexpectedly decelerating without apparent obstacles. These issues are reported across varying mileage ranges and can occur both with and without the use of autopilot, suggesting potential safety implications for drivers and pedestrians. Potential buyers should be aware of these patterns, especially considering the number of crashes and injuries reported.

Owners report recurring issues with the falcon wing doors on the 2018 Tesla Model X, frequently describing failures to open, particularly in hot and sunny conditions. This issue has led to situations where passengers are unable to exit the vehicle, posing a potential safety risk. Additional complaints mention problems with the front trunk opening unexpectedly while driving and issues with door and window components, such as spontaneous shattering or failing to lock. One complaint involves a crash where the vehicle allegedly accelerated unintentionally, resulting in a collision with a fence. These issues often arise in vehicles with varying mileages, and multiple owners express concerns about the safety implications of these structural failures.

Owners of the 2018 Tesla Model X frequently report issues with the steering system, with common symptoms including reduced steering assist, loud squeaking or creaking noises, and steering wheel lock-ups. Complaints also mention electronic malfunctions, such as horns that engage and do not stop, often accompanied by electrical failures and, in one instance, smoke and a burning smell. These issues are reported at various mileage points, with some vehicles experiencing problems within five years and under 60,000 miles. Safety implications are significant, as one report involves a fire, and several describe loss of control features like autopilot and emergency braking becoming unavailable. Prospective buyers should be aware of potential high repair costs and consider these reported issues when evaluating used Model X vehicles.

Owners report recurring issues with the axles and CV joints in the 2018 Tesla Model X, with multiple instances of premature failure requiring repeated replacements. Complaints frequently mention a "clunking" sound as a symptom, and these failures often occur within the first few years of ownership. Additionally, some owners describe problems with the vehicle unexpectedly shifting from neutral to park, particularly during car washes, which may be linked to sensor or software issues. Safety implications include potential vehicle immobilization, though no crashes or loss of control are specifically reported. Used car buyers should be aware of these patterns, especially if considering vehicles with a history of axle or CV joint repairs.

Owners of the 2018 Tesla Model-X frequently report issues related to "phantom braking" when using adaptive cruise control, where the vehicle unexpectedly decelerates without clear reason. These incidents are described as abrupt stops from highway speeds, occurring multiple times for some owners, with one reporting four instances since October 2021. Additionally, a failure pattern involving the wheel sensor cable is noted, leading to a loss of ABS and other control systems. One incident resulted in an injury due to the emergency brake engaging unexpectedly, causing a sudden stop and physical harm to an occupant. These complaints highlight potential safety risks, including sudden stops on highways and the loss of critical braking functions.

Owners report recurring issues with the airbag system in the 2018 Tesla Model X, often involving warnings related to the safety restraint system. Complaints frequently mention a "safety restraint system issue" error that appears when the vehicle is started, potentially indicating a risk of airbags not deploying during a collision. Some owners describe problems with seatbelt sensors, suspecting wiring issues under the seat, which Tesla allegedly suggests require seat replacement. Additionally, there are reports of airbag and horn failures, with one owner experiencing repeated issues within a year of replacement. These symptoms typically surface as the vehicle ages, but specific mileage is not consistently noted. The potential for non-deployment of airbags during an accident poses a significant safety concern for prospective buyers.