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Tesla engineers share Model 3 steering, drivetrain, and suspension secrets
The Tesla Model 3 is practically taking over the electric car market, establishing a strong presence in every region where it is released. A key reason behind this lies in the fact that the Model 3 happens to be a really fine automobile that just happens to be electric. It’s quick on its feet, handles nimbly despite its weight, and it provides a ride that is both sporty and comfortable.
One of the UK’s most established motoring magazines, Autocar, spoke with a number of Tesla engineers to gain some insights on the design and development process of the Model 3. The result was an extensive discussion in how a clean-sheet design and a serious commitment to safety could make all the difference when creating a car that is, for all intents and purposes, intended to reinvent the automobile.
Tires
Immediately emphasized by the Tesla engineers was that the Model 3’s chassis and suspension were designed using a ‘first principles’ clean-sheet approach. This started with the Model 3’s tires, which the engineers fondly described as the “unsung heroes” of the vehicle, being critical to its feel and drivability. The development of the Model 3’s tires began back in 2015, when Tesla started working with manufacturers to create the ideal tires for the electric sedan.
The engineers noted that the tires of a high-performance electric car like the Model 3 are challenged in different ways compared to gas-powered automobiles. This is due to a number of factors, including the vehicle’s weight and its instant torque. Since the bulk of an EV’s mass is situated lower down compared to a vehicle with an internal combustion engine, there is less vertical force buildup on the outside pair of tires to generate grip when cornering.
To address this, Tesla focused on tread stiffness, even developing new compounds to deliver a good combination of cornering grip and low rolling resistance for the Model 3’s tires. Sound-absorbing foam placed inside the tire cavity further increases comfort during driving by suppressing noise. The Model 3’s rear wheels hold some interesting secrets as well. The engineers revealed that each rear wheel of the electric sedan has six degrees of freedom, with five links and one damper, though the links are split to allow superior control over forces that are transmitted through the vehicle’s tire contact patch.
Safety Systems and Steering
The Model 3 has earned a perfect 5-Star Safety Rating from the NHTSA, the Euro-NCAP, and the ANCAP. This comes as no surprise, considering that the vehicle is designed from the ground up to emphasize safety. The Model 3’s front suspension, for example, was specifically designed to provide maximum protection in small-overlap frontal collision crash tests.
Sacrificial links that are designed to snap when the front wheel and suspension get damaged are also integrated into the vehicle, allowing the Model 3’s front wheels to rotate. This moves the front wheels outside the Model 3’s body, while pushing the car, its occupants, and its battery pack from the point of impact. These safety systems extend to the Model 3’s dual-motor AWD variants as well.
Tesla designed the Model 3’s electric power steering system to have a rapid 10:1 ratio. The power steering is equipped with full redundancy with separate power feeds taken directly from the vehicle’s high-voltage battery. The engineers also mentioned two electronic modules and two inverters providing “hot backup” to the system if one fails.
Brakes
The Model 3’s braking system is quite unique, in the way that Tesla opted to equip the electric sedan with more expensive four-pot brake calipers at the front wheels instead of a single-piston sliding mechanism. This gives the Model 3 superior pedal response, and it opened the door for the electric car maker to design its own piston seals that fully retract the brake pads after braking; thus, boosting available driving range and cutting drag. Such a system adds to the Model 3’s efficiency, which has proven superior to other premium electric vehicles like the Audi e-tron and the Jaguar I-PACE.
Elon Musk has mentioned multiple times in the past that brake pads in a Tesla will last for the lifetime of a vehicle. This is no exaggeration, according to the Tesla engineers, who noted that the Model 3’s discs and brake pads are designed to last for around 150,000 miles. This is made possible by the Model 3’s regenerative braking system, which allows drivers to slow down the vehicle without using its physical brakes. As for rust issues, the engineers pointed out that Tesla has developed new anti-corrosion techniques for its electric cars.
Suspension
Perhaps the most interesting tidbit discussed by the Tesla engineers involved the Model 3’s suspension. In true Elon Musk fashion, Tesla actually used concepts from NASA when it was refining the suspension settings of the electric sedan. The electric car maker based the Model 3’s suspension settings on a study by the space agency about how long the human body can be subjected to a certain frequency without feeling uncomfortable. Considering that the vertical frequency of a suspension’s movement affects comfort and drivability, Tesla engineers settled on a vertical frequency that is equivalent to a brisk walk or a slow run to give the Model 3’s chassis a comfortable, sporty feel.
The Model 3’s suspension has impressed a number of industry experts, among them being automotive veteran and teardown expert Sandy Munro of Munro and Associates. During his teardown of the vehicle, Munro noted that the Model 3 has areas of improvement in its body and finish, but everything from the electric car’s suspension, all the way down to its tires, is flawless. In a segment on YouTube’s Autoline TV, Munro mentioned that the person who tuned the Model 3’s suspension could easily be an “F1 Prince.”
During the electric car maker’s second-quarter earnings call, Elon Musk mentioned that the “story for Tesla’s future is fundamentally Model 3 and Model Y.” While the Model S and Model X were made to prove that electric vehicles could be superior alternatives to gas-powered premium sedans and SUVs, the more affordable Model 3 — and in extension, the Model Y — would likely be the cars that could reinvent the automobile and encourage mass-market car buyers to rethink what a vehicle could be like. Based on the Model 3’s success so far, it appears that Tesla is so far succeeding in this endeavor.
H/T to JPR007.
Elon Musk
Tesla reveals key detail of Supercharger Diner, but it’s bigger than you think
Tesla has finally released one key detail about the Supercharger Diner, and it is bigger than what it appears at face-value.
Tesla has revealed a key detail of its Supercharger Diner as its launch date appears to be nearing, based on what we are seeing at the site currently.
The Supercharger Diner is located on Santa Monica Boulevard in Los Angeles and was first proposed as an idea by CEO Elon Musk back in 2018. Musk envisioned a drive-in movie-style 1950s-inspired diner that would feature elements such as servers on roller skates, large movie screens, and a menu inspired by classic treats from several decades ago.
A project that first broke ground in 2023, the Supercharger Diner has been in development for over two years, as Tesla performed demolition work at the site back in February of that year.
It has slowly moved forward, and drone footage shot this week seems to show things are nearly up and running. Musk even mentioned that he had eaten at the Diner Supercharger this week.
There are still details that Tesla has yet to announce and confirm. The most important thing is regarding the menu that will be served at the diner.
Tesla has not hinted at what it will be making for patrons at the restaurant, but Musk commended the food and said the diner would be one of the coolest spots in LA.
🚨 Tesla has involved “almost every team at the company…in some form” in the development of the Supercharger Diner in Los Angeles https://t.co/wLC6t79vgu pic.twitter.com/o52SWWbYPd
— TESLARATI (@Teslarati) July 16, 2025
However, we now have details on another important thing about the restaurant: the hours.
Images taken by Aaron Cash of ABetterTheater.com show the diner will be open 24/7, as it appears on the front doors of the diner:
🚨 Tesla Diner in Los Angeles will be open 24/7 https://t.co/SlccUUlLIb pic.twitter.com/9I78ZGBdnz
— TESLARATI (@Teslarati) July 15, 2025
At first thought, it seems this will operate like any other diner, as many are open for 24 hours a day. Diners typically serve large menus with numerous options, catering to the tastes and moods of anyone who walks in.
People of all walks of life eat at diners, as the food is typically affordable, tasty, and available at any hour to serve those who are night owls or those who work non-typical schedules.
However, Tesla is a bit different, and it seems that this new venture into food service could eventually transition from human servers and cooks to robots, most notably the company’s in-house project of Optimus.
It is something straight out of a Star Wars movie. I can think of Obi-Wan Kenobi visiting Dex in his diner in Attack of the Clones to figure out where a poison dart was sourced from:
Eventually, Optimus will likely be working as an employee in the Tesla Diner, and 24/7 operation will be performed by the humanoid robot that aims to eliminate trivial tasks from humans.
News
First glimpse of Tesla Model Y with six seats and extended wheelbase
It’s longer and taller than the regular Model Y, and it has a cool new badge.
Tesla’s extended wheelbase Model Y has been announced by the electric vehicle maker on its official Weibo page in China. At the same time, details of the upcoming vehicle have been listed in the China Ministry of Industry and Information Technology’s (MIIT) new regulatory catalog.
The extended wheelbase Model Y
Tesla announced the upcoming vehicle on its official Weibo page, with the company noting that the new car will be called the “Model Y L.” Images posted by the company showed that the Model Y L will feature a “Model Y” badge with a stylized “Y” graphic. A teaser image of the vehicle taken from its side also emphasizes the extra space that was gained from its extended wheelbase.
The MIIT listing for the Model Y L indicated that the vehicle would be 4,976 mm long, 1,920 mm wide, and 1,668 mm high. Its wheelbase was listed in the MIIT’s catalog as 3,040 mm. In comparison, the new Model Y is currently 4,797 mm long, 1,920 mm wide, and 1,624 mm high, with a wheelbase of 2,890 mm.
Six seats and some power
Most notably, the extended wheelbase Model Y was listed in the MIIT regulatory catalog as a six-seat model. The vehicle is also listed with the product model number TSL6500BEVBA0, as noted in a CNEV Post report. And as hinted in Tesla China’s Weibo post, the vehicle will be released sometime in the fall.
The Model Y L is listed as a dual motor vehicle with peak power outputs of 142 kW and 198 kW for the front and rear motors. The vehicle is also listed with ternary batteries supplied by LG Energy Solution, and it reportedly weighs 2,088 kilograms (4603 pounds). In comparison, the new Model Y Dual Motor AWD weighs 4391 pounds.
Tesla China has not hinted at the price of the new Model Y L, though expectations are high that the vehicle will be priced at about RMB 400,000 ($55,764). It also remains to be seen if the Model Y L will also be produced in Tesla’s vehicle factories in the United States and Germany.
Elon Musk’s artificial intelligence startup, xAI, just posted what could very well be the nerdiest job opening of all time. As can be seen in the Careers section of xAI’s official website, the AI startup and Grok creator is seeking a Fullstack Engineer for its “Waifus” project.
Anime fans, rejoice.
xAI’s Companions take the internet by storm
Earlier this week, xAI launched its Companions feature for its SuperGrok users, but the company eventually opened access to the new feature to all Grok iOS app users. xAI has released two companions so far: Ani, an overly attached anime goth girl seemingly inspired by the character Misa Amane from Death Note, and Rudi, a talking red panda that becomes more and more unhinged if he gets toggled to “Bad Rudi.” A third companion that looks like a male anime character is also listed as coming soon.
Ani, in particular, has become a massive hit online. Her natural, playful, and flirtatious interactions have proven popular among users across the globe, so much so that there is now fan art of the character being shared by users on social media. This has inspired the joke that Elon Musk, who has openly admitted on X in the past that he is fond of the Death Note anime, had created an actual “waifu” through xAI.
More companions coming
Based on xAI’s job opening, it appears that the company is looking to release even more companions for its users. Ani and Rudi/Bad Rudi may just be the start, especially considering xAI’s growing ambition and raw computing power.
As per the job listing, engineers hired for the role will help build fast, scalable, and low-latency avatar experiences for Grok. The AI startup noted that the work will involve real-time media processing, performance optimization, and feature development across various platforms. Applicants are also expected to be highly proficient in Python, with bonus points for experience in Rust, WebSocket, and WebRTC protocols.
Fullstack Engineers for xAI’s Waifu project are expected to receive a salary of $180,000 to $440,000, plus equity, comprehensive medical, vision, and dental coverage, access to a 401(k) retirement plan, short & long-term disability insurance, life insurance, and various other discounts and perks.
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