Tesla’s Struggle With The Model 3 Might Be Caused By Welding Issues

Tesla’s effort to ramp up the production rate of the Model 3 is facing some issues -rather unsurprisingly we might add.

The company had targeted an output of 1,500 cars in the third quarter, with the number rising to 20,000 units per month by December. Instead, Tesla made just 260 Model 3s in the third quarter, which is “less than anticipated due to production bottlenecks.”

Unlike the primarily aluminum bodies of its bigger siblings, the Model 3 is using mostly steel and the company is reportedly having trouble with the increased welding that comes with aluminum-steel bodies, according to a report from Wall Street Journal.

According to the same report, Tesla was still building the production line for the Model 3 in September, while employees were putting cars together in a separate area of the factory.

The Model 3’s bodies require more welding compared to the adhesive and rivets in aluminum bodies. The change in materials from the Model S and Model X to the Model 3 meant that Tesla had to learn manufacturing processes that are new to them, according to experts.

Elon Musk tweeted a short video of the Model 3 production line operating at one-tenth of its potential speed. The video showed sparks flying as two robotic arms were assembling parts of the Model 3’s structure.

Automotive manufacturing consultant Michael Tracy said after watching the video: “Resistance welding should make a little smoke, but when you see stuff popping out like that, that’s called expulsion. It’s symptomatic of weld spots getting too hot because they’re poorly planned, or in this case, the metal not being pulled all the way together.”

Tracy also said that slowing down the assembly lines does little to prove production is running smoothly, because lines perform differently when running at full speed.

“At this point, you would only be running it slow if you were having troubles and you were afraid the welds you were going to make weren’t going to be good,” Tracy said, according to Autonews. “It has to be able to run at rate for acceptance testing.”

No matter the cause of the production delays, Tesla is faced with a very tight schedule to ramp up the production of the Model 3 and has already some catching up to do.

The Model 3 body line slowed down to 1/10th speed

Η δημοσίευση κοινοποιήθηκε από το χρήστη Elon Musk (@elonmusk) στις Οκτ 8, 2017, 3:20μμ PDT

  • Six_Tymes

    “expulsion” Homer Simpson would have said “DOH! that reminds me of school”

  • EM1

    Change the bodies to all aluminum.

    • Axiom Ethos

      Obviously that would be too expensive to keep the car within target of a mass market car and median price. Best for Tesla to master the manf process and simply get better at it. Which I am confident they will do.

  • krusshall

    The weld shop should be a piece of cake as there’s nothing revolutionary about it unless Tesla tried to reinvent the wheel.

    • Kash

      no, but someone somewhere will try and claim the process they’re using is revolutionary and no one else has done it before, even if several others did it years ago.

  • Bash

    Where is S3XY when you expect to see him!

    • LWOAP

      He’s charging his Model S. Give him a minute.

      • Bash


    • Auf Wiedersehen

      He’s busy Tweeting and running Space X.

      • Bash

        Good one 🙂

  • Marty

    So … the most modern car factory on the planet is struggling with the process of joining chunks of iron?

  • Dennis James

    I don’t think anyone can draw any meaningful technical conclusion by looking at that video.

  • Donal Maher

    Early model quality should be amazing then……

  • Chris C

    I hope they are not trying to weld aluminium to steel… Whatever, if they haven’t isolated the dissimilar metals to avoid galvanic corrosion they will face huge warranty/repair bills in coming years. Whilst I admire Elon Musk there does seem to be a shortage of basic automotive build experience….

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