The National Highway Traffic Safety Administration opened a formal Preliminary Evaluation on July 29, 2026 into 1,198,300 Tesla Model 3 and Model Y vehicles after 156 owners reported the front lower control arm’s lateral link separating from the suspension — sometimes with zero warning and a wheel folding under the car.

Key Points

• Investigation PE26006, filed directly with NHTSA’s Office of Defects Investigation, covers 2018-2020 Model 3 and 2021-2023 Model Y — a combined population NHTSA itself pegs at 1,198,300 vehicles.
• The alleged defect: the front lower lateral link detaches from the control arm, which NHTSA’s own filing says can cause “loss of vehicle directional control.”
• Some owners reported no noise, vibration, or dashboard warning before the link let go — others heard clunking or knocking beforehand, according to Not a Tesla App’s review of the complaint data.
• A failed link can leave the car undrivable and require a flatbed tow, per the same complaint pattern NHTSA cites.
• Tesla has not issued a recall tied to this investigation as of this writing.

Probe vs. Recall: What’s the Difference

A Preliminary Evaluation is the opening stage of NHTSA’s defect process, not a recall and not an admission of fault. It’s triggered when complaint volume or severity crosses a threshold that makes regulators want a structured look at whether a real safety defect exists.

During a PE, NHTSA sends the automaker formal information requests, reviews warranty and complaint data, and typically resolves within a matter of months into one of three outcomes: the case closes with no action, it upgrades to an Engineering Analysis (a deeper, often yearlong dive that frequently precedes a recall), or the automaker issues a voluntary recall before NHTSA forces the issue. PE26006 has not been upgraded to an Engineering Analysis, and no recall has been announced — this is still the fact-finding stage.

What’s Affected

• 2018-2020 Tesla Model 3 (all variants within those model years)
• 2021-2023 Tesla Model Y (all variants within those model years)

What Owners Should Do

• Check your VIN against open investigations and recalls at NHTSA’s recall lookup; a Preliminary Evaluation alone won’t always show there, but it’s worth monitoring as the case develops.
• Listen for clunking, knocking, or looseness from the front suspension, and have any unusual noise or handling change inspected right away rather than waiting for a recall notice.
• If you’ve experienced a suspension failure, file a report at nhtsa.gov/report-a-safety-problem — additional owner complaints are part of what pushes a PE toward a deeper Engineering Analysis.
• Keep any repair or inspection records tied to front suspension components; they matter if a recall or reimbursement program follows.

Tesla has been through this pattern before — steering and suspension complaints on earlier Model 3 and Model Y builds have drawn NHTSA scrutiny in past years, and the automaker has occasionally pushed back on investigations before ultimately addressing them through service bulletins or recalls. With nearly 1.2 million vehicles now on the table and the defect description centered on directional control at speed, this is a case worth watching closely, not dismissing as another routine paperwork probe.