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An auto manufacturing expert dismantled a Tesla Model 3. Here are the strengths and weaknesses he found in the car.

Tesla Model 3
The Tesla Model 3. Hollis Johnson/Business Insider
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The technology and electronic components in the Tesla Model 3 are the car's advantage over its competitors, Sandy Munro, CEO of the manufacturing consulting firm Munro & Associates, told Business Insider.

"When it comes to the heart of the product — the electric motor, the battery, the electronics, and the software — right now, it's impossible to beat Tesla," he said.

Munro has spent three decades tearing apart and examining cars. His observations about Tesla are based on its Model 3 sedan, which he analyzed in 2018. Munro had previously begun teardowns of Tesla's Model S sedan and Model X SUV but didn't finish either because he didn't find any components he considered remarkable enough to warrant a detailed examination.

Read more: Tesla will unveil the Model Y this month — here's everything we know about the vehicle so far

Software is Tesla's greatest strength, Munro said, citing the automaker's over-the-air updates as its most impressive software feature. (He mentioned circuit boards, electric motors, and battery packs as Tesla's other primary strengths.) The automaker has used over-the-air-updates to add new features to its semi-autonomous Autopilot system and improve the Model 3's braking distance.

"There's nobody that's got better software than they do. Nobody," Munro said.

Some Model 3 features — like over-the-air updates, a touchscreen that controls many of the vehicle's settings, and even an unconventional air-conditioning system — have a "bewitching" quality that is rare in an auto industry which focuses on cost rather than delighting customers, Munro said. 

"That's the kind of stuff that is lost on the MBA. The MBA can't figure that out. They just think, 'How can we make this cheaper?' That's not how you're going to get customers. Customers, if it's worthwhile, they'll pay the money," Munro said. "That's where a lot of the other companies fall apart. They don't get that."

Tesla's biggest weakness is body construction, Munro said. Some areas of the Model 3 consist of too many parts, like its wheel wells, and the vehicle features multiple kinds of welding techniques, a practice that increases costs without serving a discernible benefit, Munro said. He described Tesla's welding philosophy as "engineering bragging." (Munro said Tesla CEO Elon Musk told him during a phone conversation that he had fired the person responsible for the Model 3's body.)

A Tesla representative told Business Insider that Munro had analyzed a Model 3 that was built in 2017. Since then, an improved production process has led to better body quality for the Model 3, the representative said.

Ultimately, Tesla's weaknesses are fixable, while its strengths are difficult to replicate, Munro said.

"What they did inside is phenomenal and impossible to recreate. What they did on the outside is fixable."

Have a Tesla news tip? Contact this reporter at mmatousek@jkmperu.com.

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I'm a senior transportation reporter at Insider covering electric vehicles, automated-driving technology, and ride-hailing. I joined Insider in October 2017 and previously worked as an intern at the St. Louis Post-Dispatch. I graduated from Washington University in St. Louis with degrees in film and media studies and business economics. You can follow me on Twitter @matousekmark and email me at mmatousek@jkmperu.com.  If you have sensitive information you'd like to share and don't feel comfortable sending it to my work email or via a direct-message on Twitter, you can contact me on the encrypted messaging app Signal at 646-768-4712 or email my encrypted address at mmatousek@protonmail.com. Here's some of my work: Uber insiders are divided over Dara Khosrowshahi's leadership, with some worried the company has become 'boring' and 'confused' about its future Nikola founder Trevor Milton convinced the world he was the next Elon Musk. Insiders say a history of lies brought the billionaire down. 17 hours a day, 7 days a week: Cruise-ship workers describe the grueling conditions they face on the job We talked to 42 insiders about Tesla's factory of the future. They revealed the corners cut to hit ambitious production targets. 70-hour weeks and 'WTF' emails: 42 employees reveal the frenzy of working at Tesla under the 'cult' of Elon Musk Tesla is transforming how cars are sold. But 27 insiders say the company's methods mean slashed pay and living under the constant threat of getting laid off. Uber insiders reveal how DoorDash stole its delivery crown and left Eats in the dust Uber's trying no-meeting Mondays to give employees a break from 'tiring' back-to-back meetings, a leaked email reveals Leaked email reveals a Tesla VP expressed concern about employees coming to work with COVID-19 symptoms Leaked document reveals Nikola flip-flopped on whether it would spend any of its $17 million of customer deposits to fund the Nikola One Insiders reveal Alibaba's Jack Ma sought a partnership with Canoo to build electric delivery vans, but the deal fell flat because the startup couldn't meet his aggressive timeline Leaked email from Elon Musk reveals the Model Y is experiencing production 'challenges' while passing the Model 3 as the top priority at Tesla's US car factory Leaked email and audio reveal Carnival-owned Holland America has struggled to give refunds to some customers Leaked documents reveal the severance packages laid off Carnival UK workers will receive Inside Tesla's overhaul plan for its sales and delivery teams to solve one of its toughest customer challenges