2021 Tesla Model 3 Long Range on 2040-cars

Auto blog

Investigators Find No Defect Trend With Tesla Motors' Model S

Federal safety investigators said Friday they have found no apparent defect trends in the Tesla Model S, an electric luxury car that has its share of fans and critics. The National Highway Traffic Safety Administration closed a four-month investigation into whether the car's batteries were at heightened risk for underbody strikes and subsequent fires. Even though no defect trend was found, Tesla Motors said in a written statement it would further protect the bottom of its cars with a reinforced underbody shield. The California-based automaker started adding the shields on March 6 and will retrofit older models free of charge. It will also increase the ground clearance of new cars. "This fix should eliminate the potential of a battery-pack fire under all but the most extreme circumstances," said Karl Brauer, a senior analyst at Kelley Blue Book. Although there are more than 194,000 car fires in the United States every year, NHTSA investigators began a preliminary investigation into potential trouble on Nov. 15, 2013 following two Model S fires, one in Tennessee and one in Washington. No one was injured or killed in either fire. Roadway debris punctured the battery pack near the front of the compartments in both cases, damaging the batteries' lithium ion cells that then began "thermal runaway" events. The opposite ends of the debris had dug into the pavement and jutted upward. Tesla called this a "piking effect." The company said it has conducted 152 vehicle level tests, and that the new shields prevented any damage or penetration of the new shields. The first is a rounded, hollow aluminum bar that's followed by a titanium plate. The third layer of protection is made of solid aluminum. (There's video of the new plates in action on the Tesla Motors website). "We have tried every worst-case debris impact we can think of, including hardened steel structures set in the ideal position for a piking event," Tesla Motors founder Elon Musk wrote on the company's blog," essentially equivalent to driving a car at highway speed, into a steel spear braced on the tarmac." Approximately 15,805 vehicles are eligible for the upgrades, which NHTSA says should reduce the frequency of underbody strikes and subsequent fire risks. But the agency did note that the closing of the investigation did not necessarily constitute a finding that a defect does not exist. "The agency reserves the right to take further action if warranted by new circumstances," it said.

And now for a different sort of Tesla Model S review...

Our friends at Kelley Blue Book have taken an unflinching look at the Tesla Model S in a new video. The crew originally planned to pack up and whip the electric sedan all the way to Las Vegas from Los Angeles, but got sidelined by a flat tire. The ensuing detour to a Tesla service center resulted in a day of hopping from charge point to charge point and a number of close calls on the range front. Confronted with cold temperatures, a desire to make time and some serious topography, the Model S pulled up short on projected range but never left the guys stranded.
The team eventually makes it to Vegas and discovers the aggravation of trying to charge the car with anything other than the company's supercharger stations. The return trip goes quite a bit better, however, and KBB starts to figure out what makes the Model S so special. We won't ruin the end for you. You can check out the full clip below.

Tesla buys test track adjacent to its factory

Two months ago, Tesla hired Chris Porritt to be the vice president of its vehicle engineering program. Tesla's purchase last week of a 35-acre parcel abutting its factory in Fremont, California will give Porritt, formerly the boss of Aston Martin's Vehicle Engineering team (he's the father of the One-77 supercar), at least a portion of a test track where he can challenge and hone the EVs of the future.
The land was part of a parcel of more than 160 acres that had been owned by the New United Motor Manufacturing, Inc., the former joint venture factory built by General Motors and Toyota. When NUMMI (shown above) closed, the land was bought by Union Pacific Railroad, which sold the lot to Tesla.
While Tesla hasn't laid out its plans, we're guessing they'll eventually expand the track as the factory footprint grows; CEO Elon Musk has said Model S production could equal 800 cars per week by the end of next year. As for Porritt, from his new base in Fremont and with that new test track, he'll oversee further development of the Model S and the birth of the Model X, Roadster successor and the "affordable Tesla" due by 2017.