A wireless update of antilock braking software improved the stopping distance of Tesla's electric Model 3, prompting Consumer Reports to reverse course and give the car its "Recommended Buy" rating.
The magazine said Wednesday that the update cut 19 feet off the car's stopping distance from 60 miles per hour. A previous test - the results of which were released a little more than a week ago - found that it took 152 feet for the Model S compact car to stop from 60, the longest braking distance of any modern car the magazine has tested.
The improved braking raised the car's score high enough for it to receive the coveted recommendation. But Consumer Reports still has concerns over wind noise, a stiff ride, and the touch-screen controls that could distract a driver.
After the first round of testing was made public, Tesla CEO Elon Musk promised to fix the problem within days. Consumer Reports says it was told by Tesla that the software helps the brakes adapt to variations in how they are used and how they respond in different environmental conditions.
On Twitter Wednesday, Musk wrote that he appreciates the "high-quality critical feedback" from Consumer Reports and said that noise and ride comfort already had been addressed. Another software update will address the controls, he wrote, without elaborating.
Musk told the magazine last week that Tesla had already made production changes to address wind noise, the harsh ride and an uncomfortable rear seat, Consumer Reports said in a statement. Consumer Reports said it will rent another Model 3 from Tesla to check on the changes and will report back on the results. The magazine bought a Model 3 for the first test and said it doesn't normally rent test vehicles.
The Model 3 is Tesla's first attempt to appeal to mass-market buyers. The car that starts at $35,000 but can run as high as $78,000 has been plagued by production delays.