News
Plug in America Extends Long-Term Tesla Battery Study to New Model S

Long-time electric vehicle (EV) advocate, Tesla Roadster owner, and Plug in America Chief Science Officer Tom Saxton has been conducting a long-term EV battery study with the goal to gather deep insight on how EV batteries perform (and degrade) over time.
Tom’s long-term battery study has been invaluable not only to the greater EV community but specifically to Tesla fans as well. The take rate for participants for the Tesla Roadster study is close to a 7% sample, while early 85 kWh Tesla Model S owners contributed to a healthy start. In an email correspondence with Tom, he has indicated that he is looking to expand the study to include the new 70 kWh and 90 kWh Model S variants as well as the Model X 90D.
With the EPA recently setting an unprecedented 303.2 mile Highway rating for the redesigned Model S, consumers may want to know what the long-term differences would be between a 90D classic fascia vs a 90D new fascia. Providing a third-party study of the effects of long-term battery health enables all concerned, especially amongst first time Tesla owners / Model 3 reservation holders, with a greater understanding and comfort to know “that Tesla knows what they’re doing.” Furthermore, it gives new EV drivers a sense of comfort when making the switch to electric powered car ownership.
Related:
- Tesla Roadster Battery Survey with Results
- Tesla Model S Battery Survey with Results
- DOWNLOAD (PDF) Plug in America Tesla Roadster Battery Study
Below are charts for the Model S as captured from Plug in America’s survey.
The first chart that caught my eye is one that plots battery range capacity vs. miles accumulated for that vehicle.
This same chart can be used to also track how a particular respondent’s vehicle matches with the universe of respondents. The vehicle in black on the chart below shows the performance of my vehicle in relation to other respondents’ cars.
The third chart that was of interest is the reliability of certain components, namely the drive unit, battery, and charger found on the Model S. I can’t help but wonder if the increase in reported failures on chargers for 2014 vehicles resulted in Tesla abandoning it for the current 48A charger found on newer Model S and Model X.
Lastly, the inspiration to my exhorting fellow owners to participate in this survey was the chart of participant vehicles.
For as many Model S’ are on the road today, I wonder as to the ability of this study in its current count, to fully report on the vehicle with such a small sample size. If you’re a new 70D or 90D Model S owner, please contribute your data to Plug in America through the Model S battery survey form. It’s fairly straight forward and serves our common purpose.
Tesla continues to improve in every sense, but it’s also wise to run a third party check against Tesla’s claimed figures.
Plug in America is an organization that formed out of the advocates that tried to stop the “murder”of the GM EV1 as told through the documentary, “Who Killed the Electric Car?”. According to the Plug in America site, they aim to accelerate the shift to plug-in vehicles powered by clean, affordable, domestic electricity to reduce our nation’s dependence on petroleum, improve air quality and reduce greenhouse gas emissions.
News
Tesla China roars back with highest vehicle registrations this Q2 so far
Tesla China’s 80% week-over-week growth was the most notable among Chinese EV brands.

Tesla China saw a notable rise in new vehicle registrations in the week of June 9 to 15, 2025. During the week, Tesla China’s registrations saw an impressive 80% week-over-week increase, resulting in the electric vehicle maker posting its highest insurance registration figures this Q2 so far.
Tesla China Roars Back
During the week ending June 15, 2025, Tesla China saw 15,500 insurance registrations. This represents an 80% increase from the previous week’s 8,640 units. This is also the highest number of registrations that Tesla has posted in China for the past ten weeks, as noted in a CNEV Post report.
Tesla watchers have observed that the electric vehicle maker’s 80% week-over-week growth was the most notable among Chinese EV brands. Following Tesla was Xpeng, which saw a 52% week-over-week growth to 6,400 registrations, and Nio, which saw a 9.3% week-over-week increase to 4,700 registrations.
Tesla China does not report its weekly vehicle registration figures, though the company’s overall performance in the Chinese auto market can be inferred through new vehicle registration data. Fortunately, these registrations are closely tracked and reported by industry watchers, as well as automakers like Li Auto.
Tesla Model Y Impact
Industry watchers estimate that Tesla China was able to deliver 11,200 new Model Y units to customers in the week ending June 15. This represents a week-over-week improvement of about 85% from the previous week. This bodes well for the revamped all-electric crossover, as it suggests that demand for the vehicle remains strong.
The new Model Y is Tesla’s highest volume seller. Thus, it would not be a surprise if the company’s numbers this Q2 2025 end up relying on the sales figures of the revamped all-electric crossover. Fortunately, Tesla has two more weeks before the quarter ends, which should be enough to increase its quarterly sales numbers to a notable degree.
Tesla’s domestic sales in China totaled 38,588 units in May, down 30% year-over-year but up 34% percent from April, as per data from the China Passenger Car Association (CPCA). In the same month, Giga Shanghai also exported 23,074 vehicles in May.
News
SpaceX Ax-4 Mission prepares for ISS with new launch date
SpaceX, Axiom Space, and NASA set new launch date for the Ax-4 mission after addressing ISS & rocket concerns.

SpaceX is preparing for a new launch date for the Ax-4 mission to the International Space Station (ISS).
SpaceX, Axiom Space, and NASA addressed recent technical challenges and announced a new launch date of no earlier than Thursday, June 19, for the Ax-4 mission. The delay from June 12 allowed teams to assess repairs to small leaks in the ISS’s Zvezda service module.
NASA and Roscosmos have been monitoring leaks in the Zvezda module’s aft (back) segment for years. However, stable pressure could also result from air flowing across the hatch seal from the central station. As NASA and its partners adapt launch schedules to ensure station safety, adjustments are routine.
“Following the most recent repair, pressure in the transfer tunnel has been stable,” a source noted, suggesting the leaks may be sealed.
“By changing pressure in the transfer tunnel and monitoring over time, teams are evaluating the condition of the transfer tunnel and the hatch seal between the space station and the back of Zvezda,” the source added.
SpaceX has also resolved a liquid oxygen leak found during post-static fire inspections of the Falcon 9 rocket, completing a wet dress rehearsal to confirm readiness. The Ax-4 mission is Axiom Space’s fourth private astronaut trip to the ISS. It will launch from NASA’s Kennedy Space Center in Florida on a Falcon 9 rocket with a new Crew Dragon capsule.
“This is the first flight for this Dragon capsule, and it’s carrying an international crew—a perfect debut. We’ve upgraded storage, propulsion components, and the seat lash design for improved reliability and reuse,” said William Gerstenmaier, SpaceX’s vice president of build and flight reliability.
The Ax-4 mission crew is led by Peggy Whitson, Axiom Space’s director of human spaceflight and former NASA astronaut. The Ax-4 crew includes ISRO astronaut Shubhanshu Shukla as pilot, alongside mission specialists Sławosz Uznański-Wiśniewski from Poland and Tibor Kapu from Hungary. The international team underscores Axiom’s commitment to global collaboration.
The Ax-4 mission will advance scientific research during its ISS stay, supporting Axiom’s goal of building a commercial space station. As teams finalize preparations, the mission’s updated launch date and technical resolutions position it to strengthen private space exploration’s role in advancing space-based innovation.
News
Sweden blocks Tesla FSD-style testing in Stockholm
It looks like FSD testing in Sweden would have to wait some time.

Tesla is putting a lot of effort into getting its Full Self Driving (FSD) system approved in territories outside North America. But while China seems to have embraced FSD fully, other countries like Sweden do not seem to be receiving Tesla’s automated driving system very well.
This became quite evident in a document from Stockholm City, which has started making the rounds online.
FSD Testing Rejected
The document, which was initially shared by X user @KRoelandschap, indicated that the Swedish Traffic Department in Stockholm had rejected Tesla’s request to start FSD testing in the city’s streets. Tesla has been demonstrating FSD in several areas across Europe, so it is not surprising that the company is also attempting to test its automated driving system in Sweden.
Unfortunately for Tesla, Sweden might prove to be a tough nut to crack. As per the City of Stockholm:
“The Traffic Office is currently working on updating its approach to automation. At the same time, the city and the office are under heavy pressure from other ongoing innovation tests. Our ambition is to actively participate in and learn from the continued development in the field of automation.
“Based on this, and in combination with the fact that the current test is the first of its kind, which entails certain risks for both infrastructure and third parties, and that it is planned to be carried out throughout the city, the City of Stockholm considers it is currently not possible to approve the implementation of the test.”
Tesla’s Other Swedish Troubles
Sweden’s FSD testing rejection is not the only roadblock facing Tesla in the country. Since October 2023, Swedish unions have been engaged in an active effort to disrupt Tesla’s operations. The unions’ efforts have been varied, with some resulting in Tesla having difficulty launching more Superchargers in Sweden. Despite this, Tesla has remained stubborn and has refused to bow to the unions’ demands.
Fortunately for Tesla, it seems like its numbers are still strong. Despite the company’s decline in several European countries, the new Model Y is starting to see strong sales figures in Sweden. In early May alone, the new Model Y became the country’s most popular electric vehicle—a notable accomplishment considering the unions’ active efforts to disrupt Tesla.
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