Consumer Reports said stopping distance and other flaws outweighed the Tesla Model 3 positive qualities.
Automakers are making vehicles more fuel efficient than ever, but American consumers are buying less efficient vehicles.
Tesla may produce 500 cars per day this week, a big jump over last month's numbers.
Tesla will begin the restructuring process CEO Elon Musk discussed on a conference call in early May.
Engineers say CEO Elon Musk thought adding more sensors to cars was unnecessary.
Customers will soon be able to order new versions of the Model 3 with all-wheel drive and a performance package, Elon Musk said on Twitter on Friday.
Tesla said it is cooperating with authorities after a Tesla Model S crashed and caught fire in Florida.
The video, which features shots of factories, employees and products, comes days after CEO Elon Musk had a tense phone call with Wall Street analysts.
Tesla said it is cooperating with authorities after a Tesla Model S crashed and caught fire in Fort Lauderdale.
But changes to power trains, vehicle designs, and materials stands to keep SUVs on dealer lots even if oil prices rise.