NHTSA Investigates 1.2 Million Teslas Over a Suspension Part That Can Detach

Federal regulators opened a new investigation into roughly 1.2 million Tesla Model 3 and Model Y vehicles on July 31, after 156 owners reported a front suspension part detaching while the car was moving. The National Highway Traffic Safety Administration says the part, called the front lower lateral link, has come loose with little or no warning in some cases, leaving the car difficult or impossible to steer.

What Owners Are Reporting

The probe covers 2018-2020 Model 3 sedans and 2021-2023 Model Y crossovers. NHTSA’s Office of Defects Investigation opened a preliminary evaluation, the first of three stages that can end in a forced recall. Investigators say the lateral link, a core piece of the front suspension that holds the wheel in position, has separated from the vehicle in the field. When it lets go, the agency says drivers can lose steering control and the car becomes undriveable, often requiring a tow.

The most striking part of the complaint data is how little warning most drivers got. Some owners heard a knock or clunk beforehand. Many reported none at all. One Model Y owner described the experience directly: after a knocking sound while turning, he found a loose nut on the front driver’s side axle joint. Tesla covered the repair under warranty while telling him no recall applied to his car.

NHTSA says it is not aware of any crashes or injuries linked to the defect so far, though 156 complaints is a substantial count for a probe still at its earliest stage.

Tesla’s Suspension History With This Part

This is not the first time the same component on the same vehicles has drawn scrutiny. Tesla recalled roughly 2,800 Model 3 vehicles in 2021 after finding front suspension lateral link fasteners had been improperly tightened at the factory, and a second, smaller recall in 2023 covered 422 Model Y vehicles for a similar fastener problem. NHTSA says the failures under investigation now extend beyond the vehicles and build issues covered by those two earlier recalls, and does not appear to stem from the same production error.

Tesla’s suspension components have drawn NHTSA attention before on other models too. The agency scrutinized Model S and Model X suspension parts starting in 2020, a case that dragged on for years before closing in 2024 without a recall, though NHTSA recommended Tesla change the part anyway.

Part of a Wider Pattern of Scrutiny

The suspension probe lands while Tesla already faces heavier NHTSA attention on other fronts. The agency upgraded its investigation into Full Self-Driving software over reduced-visibility crashes to cover 3.2 million vehicles earlier this year, moving that case a step closer to a possible recall. NHTSA also gave Tesla until August 12 to hand over an internal document related to its FSD radar-removal decisions, and opened a separate rulemaking push this summer aimed at safer door handles after a string of deaths tied to Tesla’s electronic door release system.

Taken together, the company is now managing at least three distinct, active federal vehicle safety inquiries at once, covering the suspension, the driver assistance software and the door hardware on different parts of its lineup.

What To Do If You Own an Affected Model

Owners of 2018-2020 Model 3 or 2021-2023 Model Y vehicles who hear a knock, clunk or rattling noise from the front of the car, especially when turning or going over bumps, should get the front suspension inspected before continuing to drive. Enter your VIN at nhtsa.gov/recalls to check whether your specific vehicle falls under an existing campaign, and contact a Tesla service center directly if you notice unusual noise or a change in steering feel. Tesla has covered at least some of these repairs under warranty even without a recall in place, based on owner accounts, so documenting the issue and requesting service right away is worth doing regardless of whether NHTSA orders a recall down the line.

A front suspension failure at low speed is generally survivable in a way many other failures are not, but a part that holds the wheel to the car should not come loose at all, and owners should not wait for a formal recall notice if they are already hearing warning signs.

What Happens Next

A preliminary evaluation can close with no further action, as happened with the Model S and Model X suspension case in 2024. It can also escalate to an engineering analysis, the stage that typically precedes a recall decision. NHTSA has not set a timeline for its next update, and Tesla has not issued a public statement on the new probe specific to the 2018-2020 Model 3 and 2021-2023 Model Y vehicles now under review.

How Investigations Like This Typically Unfold

NHTSA’s defect investigation process runs in stages, starting with a preliminary evaluation like the one opened here, then an engineering analysis if investigators find evidence of a pattern rather than isolated incidents, and finally a recall decision if the agency and automaker agree a safety defect exists. Cases can take months or years to move between stages. The Model S and Model X suspension inquiry ran from 2020 to 2024 before closing without a recall, an example of how long these reviews can drag on even when they end without forcing a fix. The FSD visibility investigation covering 3.2 million vehicles took a similar path before its upgrade earlier this year.

The 156-complaint count driving this new probe is unusually high for a preliminary evaluation. Investigations covering similar suspension and steering components at other automakers have opened with complaint totals in the dozens rather than hundreds, which is one reason regulators and safety advocates are watching this case more closely than a typical early-stage inquiry.

What Used Buyers Should Check

Anyone shopping for a used 2018-2020 Model 3 or 2021-2023 Model Y should ask directly whether the front suspension has ever been serviced or inspected, and request any available service history through Tesla’s account system, which typically follows the vehicle rather than the original owner. A pre-purchase inspection that specifically checks the front lower lateral link and its mounting hardware is a reasonable request given the open investigation. NHTSA has not yet confirmed a defect requiring repair, but the inspection costs little next to the risk of skipping it.

Buyers should also check the VIN against NHTSA’s recall database before finalizing a purchase. The two prior lateral link recalls from 2021 and 2023 covered specific, narrower vehicle ranges, and a general VIN lookup will surface either one immediately if it applies to that particular car.

Why Suspension Failures Draw Extra Scrutiny

Regulators tend to treat steering and suspension defects with more urgency than most other vehicle systems, given how little room the failure mode leaves a driver to react. A part that keeps a wheel attached to the car in its intended position either holds or it does not, and unlike a warning light that precedes many engine or transmission problems, a lateral link separation can happen with only a brief noise, or nothing at all, as the complaint from the Model Y owner in Electrek’s report describes. That combination of severity and unpredictability is precisely the profile NHTSA weighs most heavily when deciding whether to escalate a preliminary evaluation into a full engineering analysis.

How This Fits Into Tesla’s 2026 So Far

Tesla owners have absorbed a steady stream of safety-related news this year, from the Cybertruck tire recall in July to the door handle rulemaking push and now this suspension probe. Each case covers different vehicles, different systems and different complaint counts, and none has resulted in a confirmed defect finding yet. Owners tracking their specific vehicle’s status can bookmark NHTSA’s VIN lookup tool and check it periodically. New campaigns post there before most news coverage catches up, and a five-minute check costs nothing next to the alternative of missing a recall notice that arrived by mail to an old address.

Sources:

• Electrek, July 31, 2026
• NHTSA Office of Defects Investigation
• NHTSA Recall Campaign 21V835000