NHTSA Complaint #11508064 — 2019 TESLA MODEL 3

On Feb. 18, 2023 when the Tesla model 3 was being driven on I-66E in a regular lane (55mph speed limit) parallel to an I-66 express lane (posted limit of 70 mph) going in the same direction, the car display showed the higher posted speed limit of the express lane. As a result, in assisted cruise control mode, the car would speed up more than 15 mph faster than the permitted speed for the non-express lane. Using assisted cruise control in such a circumstance is a serious hazard, but it has been observed many times on different highways since the vehicle was purchased in 2019. The problem puts the occupants of the car and other vehicles on the road at risk. The problem was initially experienced on I-395 and reported to Tesla in 2019 soon after purchase, but no action or follow-up was made. Recently, the problem has been consistently detected multiple times in similar circumstances.