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Tesla’s Model 3 electric motor is a clever mystery box, says auto experts

Model 3 drivetrain.

Published

6 years ago

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Sandy Munro, a teardown specialist and auto industry veteran, is releasing the results of a study he conducted with battery expert Mark Ellis comparing the motors inside four electric vehicles, one of which was a Tesla Model 3. Despite analyzing the vehicle for a long time, the auto expert states that there are still mysteries that he is yet to uncover on the electric sedan.

“The Tesla has a lot of stuff hidden. The Tesla is a big mystery. It’s not obvious sometimes what clever things they’ve done, ” he commented about the California-based car maker’s motor in a recent interview summarized by Industry Week. “There’s mysteries every day. We thought we were clever, but we’re not that clever.”

One of the clever features Munro and Ellis discovered in their Model 3 teardown was the disconnect device for the high voltage. “It’s not really a fuse…It’s like a little explosion. If the car rolls over, they have a little disconnect that blows up, [cutting] all the power to everything and that way you don’t have an electric nightmare,” he revealed. Also, the inner magnets of the Model 3 motor were found to be under a lot of stress, which is not something other manufacturers have learned to do in high volume production. “We’ve talked to lots of magnet manufacturers, but this might be another one of these made-in-Tesla kind of deals. They make a lot of stuff in-house,” Munro guessed.

Sandy Munro holds up the Automatic Drive Module of the Tesla Model 3. [Credit: Autoline Network/YouTube]

Another innovation that impressed the teardown team was how advanced the inverter/convertor device was that provides power to the motor, particularly in the use of silicon carbide on the devices’ integrated circuits. “It creates a lot less heat and is a lot faster than the Chevy and BMW,” Ellis added to the discussion. “Silicon carbide is the latest and greatest and Tesla so far is the only vehicle out there with it.” Munro and Ellis further noted the high level of tech Tesla’s motor contained, all while being considerably smaller than the competition.

The study will be released in a few weeks and also includes detailed information about the motors inside the Chevy Bolt, BMW i3, and Jaguar I-Pace. Munro had very positive things to say about Tesla’s technology, but the electric vehicles produced by industry giants did not receive quite the same accolades. “It looks like the other guys just went around and glued together whatever they could find off the shelf,” Munro jabbed at Tesla’s competition.

The BMW i3 was hit particularly hard and cited as the heaviest, most expensive, and very inefficient overall. “It’s not designed for… I don’t know what it’s designed for, really,” Munro swiped in the interview. “While everything on Tesla is…very, very efficient engineering.” Munro still isn’t sold on the Model 3 body, though, and takes issue with the complexity of the process it takes to manufacture it thanks to the number of parts, materials, and fastenings involved.

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Munro has a history of strong opinions on Tesla’s car intended for the mass market. After completing an initial teardown of a 2017 version of the vehicle, he infamously commented that the car’s panel gaps could be seen “from Mars” among other very critical remarks about the way the car was manufactured. Tesla eventually issued a statement in response to the criticisms, indicating that significant improvements had been made to its Model 3 manufacturing process which would render moot many of the issues identified.

Once the Model 3 teardown was complete, Munro later admitted to eating “a lot of crow” in response to the technology installed and implemented throughout the car. He praised the Model 3 battery pack and the way it handles on the road, in particular, and also estimated Tesla was turning a 30% profit on the vehicle. Munro ultimately concluded that everything from the car’s suspension and down was perfect, but everything about its bodywork was questionable.

While the study Sandy Munro and Mark Ellis have conducted has not yet been released, from the sounds of it, crow seems to have still been on the menu for Tesla’s inner workings while old criticisms still stand about its outer packaging.

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Accidental computer geek, fascinated by most history and the multiplanetary future on its way. Quite keen on the democratization of space. | It's pronounced day-sha, but I answer to almost any variation thereof.

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Tesla plans to use Unreal Engine for driver visualization with crazy upgrade

This could change the way Driver Visualization looks for Tesla owners.

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25 minutes ago

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August 13, 2025

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Credit: Tesla Newswire | X

Tesla looks to be planning a major upgrade to its driver visualization for Autopilot with a crazy upgrade from its current version.

Tesla’s driver visualization appears on the center screen and shows the vehicle, its surroundings, and, when it is operating on Autopilot or Full Self-Driving, shows the route of travel.

It has improved over the years, and even includes things like pedestrians, pets, and the shapes of other vehicles. It also helps with manual driving because it can be a good representation of your surroundings when trying to change lanes or merge in traffic.

However, it appears Tesla is planning a pretty substantial upgrade with the

Coding found in the 2025.20 firmware by Tesla hacker greentheonly showed the company is planning to utilize Unreal Engine for Autopilot visualization. He said the one Tesla currently uses is “godot-based.”

Unreal Engine is a 3D computer graphics game engine that was developed by Epic Games, the developer of the popular third-party shooter game Fortnite. It was first released back in 1998, and the most recent version is Unreal Engine 5. The sixth version is in development, and it could be out in 2027 or 2028.

However, Tesla could use it for a more realistic representation of vehicle surroundings. It would undoubtedly improve driver visualization, creating a smoother and freer-flowing depiction of what is outside of the car.

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SpaceX is rolling out a new feature to Starlink that could be a lifesaver

Starlink now has a new Standby Mode that will enable low-speed internet access in the event of an outage.

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2 hours ago

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August 13, 2025

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(Credit: Starlink | X)

SpaceX is rolling out a new feature to Starlink that could be a lifesaver in some instances, but more of a luxury for others.

Starlink is the satellite internet service that Elon Musk’s company SpaceX launched several years ago. It has been adopted by many people at their homes, many airlines on their planes, and many maritime companies on their ships.

SpaceX produces its 10 millionth Starlink kit

It has been a great way for customers to relieve themselves of the contracts and hidden fees of traditional internet service providers.

Now, Starlink is rolling out a new service feature on its units called “Standby Mode,” which is part of Pause Mode. The company notified customers of the change in an email:

“We’re reaching out to you to let you know the Pause feature on your plan has been updated. Pause now includes Standby Mode, which comes with unlimited low-speed data for $5.00 per month, perfect for backup connectivity and emergency use. These updates will take effect in 30 days. All of your other plan features remain the same. You are able to cancel your service at any time for no charge.”

SpaceX did not define how fast these “low speeds” will be. However, there are people who have tested the Standby Mode, and they reported speeds of about 500 kilobytes per second.

The mode is ideal for people who might deal with internet or power outages, but still need to have some sort of internet access.

It could also be used as a backup for people who want to stay with their ISP, but would like to have some sort of alternative in case of an outage for any reason.

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Elon Musk says this essential Tesla Robotaxi feature will be here soon

Tesla will work to solve automatic parking at available Supercharger stalls with future updates.

Published

3 hours ago

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August 13, 2025

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Credit: Tesla

Elon Musk reiterated that one feature, which is ultimately an essential part of the operation of the Tesla Robotaxi platform, will be here soon.

Tesla released a new video of its longest Full Self-Driving demo yesterday, showing off a zero-intervention drive from San Francisco to Los Angeles. The drive is roughly seven hours and 360 miles long, and not a single need for the driver to touch the wheel was recorded.

Tesla flexes its most impressive and longest Full Self-Driving demo yet

There was one question that was brought up by an owner that brings up an interesting point. Tesla still needs to solve the vehicle’s ability to pull into Superchargers automatically, something that does not currently have a high success rate, at least for the owner who got a response from CEO Elon Musk.

Musk assured him that a Tesla’s ability to pull into open parking spaces at Superchargers would be more reliable with future software updates. Owners can see how many and which exact stalls are available before traveling to a Supercharger, so Teslas should be able to identify these stalls and pull in automatically:

This is a small part of what will be imperative for the charging experience when Robotaxi launches in the coming years. Tesla plans to enable customer-owned cars to potentially enter the Robotaxi fleet and become an autonomous ride-sharing vehicle by next year.

However, it still needs to figure out autonomous charging. There are two parts to that process: pulling into the spot and charging without human need to connect the Supercharger to the vehicle.

Tesla used to consider a robotic snake-arm charger for this, but it has talked about induction charging more recently. Wireless charging seems to be the route that Tesla plans to go, but it might take some time to resolve the energy loss issue and make it an efficient charging method.

Tesla flexes Robotaxi wireless charging — autonomy from top to bottom

Tesla has said its wireless charging efficiency is “well above 90 percent.”

Nevertheless, Tesla is still working toward figuring out all of the edge cases of Robotaxi operation. Figuring out charging without the need of a human is just one part of the puzzle it still has yet to solve, but with its improvements over the past few years, there’s no doubt Tesla will find the missing piece.

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