2020 Tesla Model X: shudder or vibration when accelerating

Filed Nov 28, 2025 · Steering, Suspension · AZ

My 2020 Tesla Model X experiences severe vibration, shaking, and rattling during acceleration, especially between about 20–45 mph and at higher suspension settings. The vibration is strong enough to affect steering stability and safe control of the vehicle during acceleration and lane changes. Tesla has already replaced the front half-shafts twice under warranty for this same problem, but the issue has returned again. This is a known defect documented by Tesla in Service Bulletin SB-21-39-001, which describes excessive front drive unit half-shaft vibration during acceleration and defines the repair with updated components. The latest revision of this bulletin (R3, dated January 19, 2024) explicitly adds “Customer Pay billing” instructions. Despite this, my local Tesla Service Center in Tempe, AZ (Supervisor: Lewis Holguin) refused to apply the SB-21-39-001 Customer Pay billing and instead charged full retail for the repair. On 11/28/2025, I was billed $1,694.86 out of pocket to replace both front half-shafts again (invoice shows approx. $1,046 in parts and $564 in labor). I have documentation showing that other Tesla customers with the same defect were billed only $350 under SB-21-39-001, which demonstrates that Tesla does apply a discounted bulletin rate in some cases. In my case, they refused to honor it even though this is a repeat failure of the same known defect and the prior warranty repairs did not permanently fix the problem. This is a repeat driveline/suspension defect that affects drivability and safety under acceleration. The shaking and vibration make it difficult to maintain stable vehicle control, especially during highway merging or lane changes. I am requesting that the federal safety agency investigate recurring front half-shaft failures and vibration/shudder issues on Tesla Model X vehicles and Tesla’s inconsistent handling of this known defect and service bulletin.

Filed Jul 22, 2025 · Suspension · CA

I would like to report a significant safety concern affecting Tesla Model X vehicles, and potentially Model S as well. Numerous reports across Tesla forums have highlighted persistent issues with unadjustable negative camber, which results in excessive inner tire wear on all four wheels. In some cases, owners have reported needing to replace their tires as early as 5,000 miles. In my own experience, I had to replace mine at just 14,000 miles. Additionally, I’ve experienced repeated failures of the front axle half-shafts on both the left and right sides. The first replacement occurred at 14,000 miles under warranty, and the second at 38,000 miles—this time at my own expense. Independent automotive professionals have pointed out that the angle at which the half-shafts are installed is too steep for optimal performance. The front motor sits significantly higher than the wheels, forcing the half-shafts to transfer power at an extreme downward angle. This off-axis setup, combined with the vehicle’s weight and high torque output, contributes to accelerated wear of internal components within the half-shafts. Over time, this leads to fatigue and surface damage, causing noticeable shuddering or vibrations during acceleration. To resolve this issue, the half-shafts would need to be more closely aligned with the wheels (on-axis) to reduce mechanical strain and eliminate the root cause of the vibrations. I urge Tesla to further investigate and address this recurring issue, as it impacts both vehicle safety and long-term ownership costs. A safety recall should be issued and reimburse out of pocket expensive back to owners.

Filed Feb 29, 2024 · Suspension · CA

Just paid to replace the upper control arms and half shafts on my 2020 Tesla Model X. These repairs were required due to a very loud shudder and squeaking noise while driving. These issues came up 6 weeks after my manufacturer warranty expired. This was not the first time my vehicle required suspension related service/repairs. Just by a quick online search Tesla is well aware of these suspension issues as is the federal safety agency. OWNERS SHOULD NOT NEED TO PAY FOR TESLAS POOR ENGINEERING. the federal safety agency needs to step up and recall these vehicles and force Tesla to reimburse owners who have paid out of pocket for repairs.

Filed Sep 1, 2023 · Suspension · CA

Premature internal damage to the front half shafts causes the front end to shudder during acceleration between 0-50 mph. This shuddering is distracting and can be felt through the steering column creating a safety risk to the driver and others in the vehicle. I have had Telsa service "repair" this issue under warranty 3 times. AUG 31, 2021 went into Service Center for the Service Bulletin to be Applied to Reseal Area Around Both Front Upper Control Arm Ball Joints With Urethane (Model X) - Modify FEB 2, 2022 went into Service center for the Service Bulletin to be Applied to Inspect Vehicle, Replace Front Halfshafts, Reposition Clevis (Raven Front Drive Unit) - Remove and Replace JUL 28, 2022 went into Service Center for the Service Bulletin to be Applied to Inspect Vehicle, Replace Front Halfshafts, Reposition Clevis (Raven Front Drive Unit) - Remove and Replace I took the vehicle to Tesla for a 4th time in Aug 2023 and because the car is out of warranty they would not repair it under the Bulletin. I decided to take the vehicle to a suspension mechanic and the front axle shafts were removed and rebuilt. The left front rearward lower control arm was also removed and replaced because it was cracked.

Filed Aug 29, 2022 · Driver assistance, Steering · NV

Tesla model X is infamous for its acceleration shudder. they have replaced the drive shafts twice already. when you accelerate the wheel vibrates only between 15-35 mph. When you brake hard it does the same thing.

Filed Jun 13, 2021 · Suspension, Wheels · CA

I had my car for almost 12 months and have drive ~11000 miles. In the past one month, I started experiencing a violent shudder/vibration during initial acceleration between ~30-40mph. Tesla service has refused to act upon this issue saying they don't have a fix for this issue. They do have a service bulletin SB-21-39-001 issued for this problem but mentioned that this is not a permanent fix for this issue. Finally, nothing was done to address the issue.