2020 Tesla Model 3 · symptom sheet

Full Self-Driving (FSD) does something unsafe

27owner reports
2involved a crash

Newest report Aug 6, 2026 · checked Sep 29, 2026

27 of the 451 complaints on this car describe FSD problems.

No recall on this systemas of Sep 29, 2026

2 crashesin 27 reports

Tick what matches of 27 reports

FSD tried to turn or change lanes wrongly

it braked hard for nothing while FSD was on

it ran a red light or stop sign or failed to yield

I had to take over to avoid a collision

a software update changed how FSD behaves

it drove over the speed limit and I cannot cap it

FSD problems on other Model 3 years

201829 reports 201973 reports 202027 reports

Report counts are for each model year on its own, so a newer car has had less time to collect them. Model years with too few reports of it for a sheet: 2021, 2022, 2023, 2024, 2025, 2026.

What this problem usually is

Owners in this group describe Tesla's Full Self-Driving (FSD) doing something they had to override: a wrong turn or lane change, a hard slowdown with nothing ahead, a red light or stop sign it didn't stop for. This page sticks to what owners wrote and what NHTSA has on file.

Read the full explainer · Which cars report it most

What got replaced

Owners who name the part that was replaced mention the software update (10 reports), the cabin or exterior camera (4 reports) and the computer or MCU (4 reports).

Recalls and investigations

No recall on this problem covers the 2020 model year as of Sep 29, 2026.

When it happens

Too few of these reports state a mileage to give a range.

What owners wrote

“Tesla was on Full Self Driving following a curve in the road were traffic lights. Lights were red Car should have stopped but did not. Ran red light with no attempt to stop or slow down.”
Filed May 12, 2026

“Driving S/B on Ann Arbor Saline Road. Had FSD on the Tesla engaged. Needed to make left turn onto Maple. Left arrow light to Maple was red. Traffic light to continue straight on Ann Arbor-Saline was green. Despite left arrow being red, Tesla did not slow and ran red light to make left turn onto Maple.”
Filed Apr 24, 2026

“The newer versions of FSD do not allow driver control of the max speed. The current versions allow you to set a maximum speed with a scroll wheel on the steering wheel.”
Filed Jan 1, 2026

“Using either cruise control or Full Self Driving mode, driving on divided highway, experienced sudden hard braking not due to any highway obstruction, road hazard, other vehicle, or weather. Without warning car dropped out of assisted control and abruptly applied brakes. This happened yesterday at 2:10 pm, 2:53 pm and 3:01 pm.”
Filed Dec 13, 2021

Should you keep driving it?

This page can't tell you that. 2 of 27 reports involved a crash. Owners who file are the ones who had a bad experience, and nobody checks their reports. If the problem affects steering, braking, power or a fire risk, treat it as a safety fault and have it inspected before a long or high-speed drive.

File your own report with NHTSA. Complaint counts are how a problem gets an investigation. How reports land on this sheet.

Guide Taking it to a shop? How to describe this problem so it gets found