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Tesla Battery Range in Sub-Zero and Snowy Conditions

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Over the month of January I decided to study the impact sub-zero weather conditions had on the battery range of my Tesla Model S and found it to be diminished by roughly 40%. Range will vary depending on one’s driving habits but the effects of winter on a Tesla Model S and its battery range should roughly mirror the data that I was able to collect.

Collecting Battery Range Data

I recorded my Tesla’s rated range at the beginning of the day and once again at the end of the day. I logged the amount of kWhs consumed during my daily journey, the actual miles driven and the average temperature for that day. All of this was plotted into a data grid so that I can analyze the effects winter conditions would have on my battery range. The results were as follows:

Tesla battery range log

Comparing the Tesla Model S rated range display versus the actual rated miles used during winter weather conditions. Results indicate an increase of 21% to as high as a 57% in energy consumption.

 

Results

Plotting the % of rated miles used / miles driven against temperature lets us see the correlation between outside temperature and battery range.

Temp vs Range in Winter

Here you can generally see a trend towards improved efficiency as outside temperature increases. There’s one big outlier which turns out to be a day when the roads were covered in snow and ice. Taking out that data point shows a better correlation between temperature and battery range.

Temperature impact on range

Using a trend line we can see that the outlier at the 57% mark should have been closer to 32% had the roads been more clear. Driving through snow and ice conditions affected the range by an extra 25%.

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The data point at the 30% mark during 14 degree is a result of me pre-warming the Model S while it was still plugged in. Warming your car up from shore power prior to taking a trip improves your efficiency.

Summary

Using the data above and a calculated trend line I came up with the table below. This table is showing the actual maximum range I’d expect to get out of a 85kW battery pack which has a rated range of 265 miles:

This analysis is based on data I collected on my car over the course of one month and during a variety of winter conditions. I found it really eye opening to see the rated range of my Model S  go from 265 to a real world average of 143 miles during the winter (90% charge, 40% range degradation). For the 60kW model this would be 112 miles.

Fortunately Tesla appears to be placing Superchargers closer together which will help alleviate any issue with running out of range because of winter weather conditions.

How do you best prepare for winter driving in your Tesla Model S?

  • Expect to use (on average) 40% more power during the winter.
  • Expect to lose about 10 miles of real range for every 10 degree drop.
  • If the roads aren’t dry expect to lose up to 25% more range.
  • Plan your charging and driving accordingly — don’t cut it close.

I hope this information has helped you understand the effects of winter on the Tesla Model S. If you have your own data, observations or questions to share, we’d love to hear them so leave us a note at the bottom of the page.

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"Rob's passion is technology and gadgets. An engineer by profession and an executive and founder at several high tech startups Rob has a unique view on technology and some strong opinions. When he's not writing about Tesla

Elon Musk

Tesla preps for a Cybercab takeover of the Robotaxi platform after pilot program

Tesla looks to be preparing the Cybercab for Robotaxi operation as castings pile up at Gigafactory Texas.

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(Credit: Teslarati)

Tesla is evidently preparing for the Cybercab to take over the Robotaxi platform after the pilot program in Austin, Texas, is launched.

That claim is made based on new drone footage from Gigafactory Texas captured by Joe Tegtmeyer, who found hundreds of Cybercab castings that have accumulated on property in Austin.

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The Cybercab is Tesla’s dedicated Robotaxi vehicle that was unveiled last October. It features just two seats and is minimalistic, aimed toward allowing the Full Self-Driving suite to chauffeur passengers from Point A to Point B without ever having to deal with human interaction or any responsibilities within the vehicle.

In June, Tesla plans to launch its first Robotaxi rides in Texas. Although employees in Austin and in the Bay Area of San Francisco have already had access to over 1,500 trips and 15,000 miles of autonomous (but supervised) travel, Tesla plans to launch a driverless version in a limited fashion in June.

However, this initial pilot program, while presumably operating on an Unsupervised version of the FSD, will only utilize Model Ys, at least at first.

The drone footage captured by Tegtmeyer today seems to tell a story of a quick transition to the Cybercab for the Robotaxi responsibilities, especially as Tesla gets its feet wet with the early Unsupervised FSD rides and gains confidence in the fleet’s ability to navigate passengers:

It appears that between 400 and 500 Cybercab castings can be seen in the images Joe captured, a very respectable number considering the company said it will not launch the Robotaxi with the initial rides it gives in Austin.

The images seem to paint a picture that Tesla is truly ready to get things moving in terms of the Cybercab project. While it does not plan to use the vehicle initially, its manufacturing efforts for the car are being prepared by stacking these castings so they’re ready to be expanded upon into the real thing.

On the most recent Earnings Call, Tesla’s VP of Vehicle Engineering, Lars Moravy, said the Cybercab’s engineering has progressed over the last several months to “derisk things like corrosion, the ceiling across the seams of the vehicle, and when you marry several components,” and even things like early crash testing have already taken place.

Moravy continued, “As with all that combined, we kind of go into the builds that we have in this quarter for the Cybercab product, and that’s the next real big test of full-scale integration with the unboxed process. And that’s kind of where we are. So you’ll see them on the test roads in a couple of months.”

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Tesla Semi futuristic sci-fi acceleration sound will never get old

Videos that capture the Semi moving at speed are most notable due to their sheer cool factor.

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Credit: Tesla Owners Silicon Valley/X

The Tesla Semi is not yet in mass production, but the company has accumulated over 7.9 million miles across its test fleet. With Tesla using the Semi for its operations, it is no surprise that sightings of the Class 8 all-electric truck have been abounding. 

These sightings from Tesla enthusiasts vary, but those that capture the the Class 8 all-electric truck moving at speed are most notable, possibly due to their sheer cool factor.

Tesla Semi’s Roar

There is something that just stands out with the Semi, particularly on the road. While the Semi does not have the Cybertruck’s brutalist, angular design, it is still very striking because it’s such a massive machine that moves far too quietly for its size. This is, of course, one of the reasons why the vehicle also becomes extra noteworthy when it fires up its electric motors and accelerates.

Take this video from Tesla Owners Silicon Valley, for example, which shows the all-electric hauler accelerating while pulling what appears to be a full load. In these situations, the Tesla Semi actually becomes audible, but unlike traditional diesel-powered truck, the Class 8 all-electric truck “roars” with its own, unique futuristic, sci-fi sound. In such situations, one could feel the Semi’s raw power, which comes from its three independent motors on its rear axles.

Tesla Semi Ramp

Tesla has been promoting the Semi quite a bit as of late, and recent reports have suggested that the company is putting in a lot of effort to prepare the vehicle for its production in Nevada. Tesla’s Careers website has gone live with over 80 Semi-related job openings recently as well, and a recent report has suggested that Tesla has ramped the Semi’s factory workers in Nevada to over 1,000 employees.

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The company has even shared an update video of the Semi factory’s progress near Giga Nevada, as well as the design of the vehicle’s new logo. The Semi’s updated logo is quite interesting as it features elements from the Tesla Model 3’s first logo, which was unveiled way back in 2016.

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Robots like Tesla Optimus are a $5 trillion opportunity: analyst

This massive opportunity could be tapped by Tesla, thanks to its Optimus humanoid robot.

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tesla-optimus-pilot-production-line-fremont-factory
Credit: Tesla

Morgan Stanley analysts have estimated that the humanoid robot market could offer a $5 trillion opportunity by the middle of the century. This massive opportunity could be tapped by Tesla, thanks to its Optimus humanoid robot.

The analysts, however, noted that the humanoid robots will likely be mostly used in industrial and commercial deployments.

The Estimates

Estimates from Morgan Stanley analysts point to humanoid robots hitting $5 trillion in global revenue by 2050. This, the analysts noted, would be about double the total revenue of the 20 largest automakers in 2024. In 2050, Morgan Stanley analysts estimated that there might be about 1 billion humanoid robots deployed.

As noted in a report from Investing.com, the shift to humanoid robots would be gradual. By 2035, the analysts estimated that just about 13 million humanoid robots will be in use, most of which will be used in industrial and commercial settings. Even in 2050, when the analysts estimated that 1 billion humanoid robots will be in use, an estimated 90% might still be used in industrial and commercial settings.

The advent of humanoid robots will likely be felt in the labor sector, Morgan Stanley analysts noted. By 2030, the analysts noted that humanoid robots could replace about 40,000 jobs. Just ten years later, in 2040, the number of jobs that robots could take over could balloon to 8.4 million. By 2050, the analysts noted that 62.7 million humans may end up watching humanoid robots do their jobs.

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Tesla Potential

Morgan Stanley noted that companies like Tesla, which control the “brains, bodies, branding and ecosystems” of the humanoid robots, would be able to offer the highest value. This is good news for Tesla’s Optimus program, as it is a product that is designed to be produced at an extreme scale. During the Q1 2025 All Hands meeting, Elon Musk reiterated the idea that Optimus could very well become the biggest product of all time.

Most importantly, Musk also stated that Tesla is internally aiming to acquire enough resources to produce 10,000 to 12,000 Optimus robots this year. But even if Tesla just manages half of this number, or about 5,000 Optimus robots this year, it would already be impressive.

“Even 5,000 robots, that’s the size of a Roman legion, FYI, which is like a little scary thought. Like a whole legion of robots, I’ll be like ‘whoa.’ But I think we will literally build a legion, at least one legion of robots this year, and then probably 10 legions next year. I think it’s kind of a cool unit, you know? Units of legion. So probably 50,000-ish next year,” Musk stated.

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