Tesla acronyms, abbreviations, terms and what they mean

WTTWOT! Or in plain English, Welcome To The World of Tesla! As you dip your toe in researching your much anticipated Tesla purchase online, or pull up for your first ever supercharge and strike up a conversation with the owner in the next (but one) stall, you’ll soon come across a new language: TWAs (Tesla World Acronyms). If you hadn’t stopped here, you might be scrabbling for words to keep up, but luckily you did stop here, and we’ve got you covered. You’ll be aware of some general EV (Electric Vehicle) and ICE (Internal Combustion Engine) abbreviations already, but if you want to know your SCs from your SuCs and more Tesla-specific TWAs, you’re in the right place.

Charging

CCS

Combined Charging System - a newer charging port that has become the standard in Europe and other markets

CHAdeMO

CHArge de MOve, a popular DC charging standard

J1772

AC power charging connection standard by SAE

MC

Tesla's Mobile Connector that was previously included with vehicles. Older generations are called the Universal Mobile Connector (UMC)

HPWC

Tesla's wall connector used to be called the High Power Wall Connector, but it is now just referred to as the Wall Connector

SC

OK, so this abbreviation comes up a lot in the Tesla community. And there are three possibilities with SC, so context is everything. SC can refer to the Service Center, which you hopefully won’t need. It can also refer to a SuperCharger in the Tesla network. Finally, it is occasionally used to refer to SolarCity, a solar energy company that was acquired by Tesla in 2016.

SuC

You might see this as an abbreviation for a Supercharger that helps to differentiate it from a Service Center.

SOC

State of Charge. The percentage your battery is charged.

PPU

Pay Per Use, for charging either at Superchargers or other public chargers

Electricity & Energy

AC

Alternating Current - the electricity in your house uses alternating current

DC

Direct Current - energy stored in batteries uses direct current

NEC

The National Electrical Code is a common standard for electrical wiring and equipment in the US

NEMA

The National Electrical Manufacturers Association is the largest association of electrical equipment in the US

NEMA 14-50

This common plug is often used to charge EVs and provides a maximum 50 amps of power, however EVs should only use up to 40 amps due to a constant load.

kW

Kilowatt (1000 watts, a unit of electric power)

kWh

Kilowatt-hours on the other hand refers to how much energy has been consumed in total. It is an absolute figure, equivalent to gallons or liters of gas burned in an ICE car.

Wh/mi

Not a Tesla-exclusive term, but an important one for EV owners. Watt-hours per mile is the EV equivalent of MPG, and tells us how much energy is being used per mile. Lower is better.

Regen

Again, an EV term rather than Tesla only, but you’ll see it used a lot in the Tesla community. It’s short for Regenerative Braking, and refers to the re-capture of kinetic energy by the battery when slowing down, or going down a steep hill. Regen is often the biggest thing new Tesla owners notice and have to adapt to. Once you do, there is no going back!

Computing Hardware

CPU

Central Processing Unit - the main chip in a computer responsible for processing data

GPU

Graphics Processing Unit - some computers contain a processor specifically made for rendering graphics

MCU

The Media Control Unit is the big touchscreen in the middle of the dashboard, and the computer that drives it. The car’s various radios, and all the entertainment and drive-related visualizations are routed through here. You may come across some numbers attached to MCU that specify the hardware version.

MCU1

MCU1 refers to Tesla's first Media Control Unit hardware which was used in Model S and Model X vehicles until March 2018

MCU2

This is Tesla's second general Media Control Unit hardware. It was used in Model S and Model X cars after March 2018. The Model 3 and Model Y started with MCU2 and later transitioned to MCU3 in late 2021. Vehicles with MCU1 can be upgraded to MCU2. MCU2 has the Intel Atom processor.

MCU3

This is Tesla's third and latest MCU hardware. It contains AMD Ryzen's chip, making it much faster than MCU2. For the Model S and Model X it also features a dedicated GPU that will be used for high quality games that rival the PS5 and Xbox Series X. There is no official word from Tesla yet, but MCU2 does not appear to be upgradeable to MCU3.

HW1

Hardware 1 refers to Tesla's original hardware for Autopilot. It was supplied by MobileEye and was only available on the Model S and Model X.

HW2

Around October 2016 Tesla transitioned to their own hardware with version 2.0. This was also only available for the Model S and Model X.

HW2.5

Hardware 2.5 was available in the Model 3 and the Model S and Model X around July 2017.

HW3.0

Tesla eventually released hardware 3.0 in April 2019, which features much faster processors. Owners who bought the FSD package (not the subscription) and had hardware 2.5 are given a free upgrade to hardware 3.0.

ECU

The Electronic Control Unit is the hardware in a vehicle used to control various driving functions.

eMMC

Embedded Multi Media Card is flash storage that is used to store certain information.

IC

An Integrated Circuit, is a chip that is integrated onto a circuit board. This could could refer to the Instrument Cluster on a Model S or Model X.

PCB

Printed Circuit Board used in electronic systems.

Driver Assistance System

DAS

Driver Assistance System, in Tesla's case this would be Autopilot

AP

Autopilot is the term that allows Tesla's to perform some level of self-driving. All Teslas today include basic Autopilot that allows the car to use TACC (Traffic-Aware Cruise Control) and Autosteer.

EAP

Enhanced Autopilot is a package that is a subset of FSD. Tesla offered it for a number of years, but it no longer offers it.

Enhanced Autopilot included features such as TACC (Traffic-Aware Cruise Control), Autosteer, Smart Summon, Autopark, automatic lane changes and more. It does not include as much as the FSD package, which allows the car to also navigate on city streets.

FSD

Full Self-Driving. Refers to the package that currently, in beta form, allows Teslas to navigate many more streets and scenarios by itself (with an alert and engaged driver on standby). In Europe and Asia FSD is still limited, but cars with the FSD package are ready to go from a hardware perspective as soon as the regulations allow.

TACC

Traffic-Aware Cruise Control - All Teslas today compare standard with TACC.

These are the Tesla acronyms and abbreviations you’ll encounter most often. Which ones are new to you? Have you come across any others?

Software

UI

UI stands for User interface, also commonly referred to as GUI (graphical user interface). You'll often find this term when referring to the design of a piece of software.

UX

UX is the User Experience of a piece of software.

OTA

OTA stands for Over-The-Air, referencing Tesla's ability to download car updates over Wi-Fi or in some cases using the vehicle's cellular data.

Single Stack

A technology stack refers to the technologies used to build a system. A single-stack refers to using the same technologies for multiple applications, instead of having separate technology stacks for each one. Single-stack is often mentioned regarding Tesla to applying everything it has learned in city driving to its Navigation on Autopilot highway feature.

Car Features

DRL

Daytime Running Lights are lights on your vehicle that remain on even during daylight.

IC

The Instrument Cluster on a Model S or Model X. This term could also mean Integrated Circuit which is a chip that is integrated onto a circuit board.

TPMS

A vehicle's Tire Pressure Monitoring System

HVAC

The Heating, Ventilation and Air Conditioning system in a home or vehicle

Governing Bodies & Agencies

EPA

Environmental Protection Agency

IIHS

Insurance Institute for Highway Safety (for safety ratings)

EU

European Union

NHTSA

National Highway Traffic Safety Administration - The U.S. federal government agency that governs vehicle safety.

SAE International

Formerly known as the Society of Automotive Engineers, it's a US-based association for developing standards for engineering professionals

Tesla / EV Terms

GF

GigaFactory - What Tesla calls their various factories, such as Giga Factory Texas

ICE

ICE refers to traditional gas and diesel-powered vehicles that contain an Internal Combustion Engine

ICEd

Being ICEd refers to an EV charging spot being taken up by an ICE vehicle

SA

Tesla's Service Advisors which are the main contact at Tesla Service

Investing

TSLA

TSLA is Tesla's stock symbol but the term is often used around someone investing in Tesla as well

TSLAQ

TSLAQ is pronounced "Tesla Q" and refers to individuals who publicly criticize Tesla and may be short-selling (the opposite of buying stock when profits are earned when the stock goes down) Tesla stock

FUD

FUD stands for Fear, Uncertainty, and Doubt and is sometimes used when someone is spreading misinformation to cast fear

Batteries

LFP

This is referring to the battery chemistry in the car’s high voltage pack, specifically the chemical symbols for Lithium (L), Iron (F) and Phosphate (P is actually for Phosphorus on its own, but PO₄³⁻ doesn’t have the same ring to it). Tesla started shifting some of its shorter-range cars (the SR MYs and M3s) to LFP in 2021, away from battery chemistry involving Nickel and Cobalt.

Even if you’re not a chemist, it’s still worth knowing which battery chemistry you have. It is recommended to keep LFP battery charge limit at 100%, unlike the previous Li-ion batteries that are stressed out if charged fully too often.

4680

Staying with the high voltage battery, 4680 refers to the newer battery technology that is being phased in at Giga Berlin, Giga Texas and Giga Shanghai. These batteries offer efficiency, range and cost improvements over the previous, smaller batteries. The numbers come from the dimensions of each individual cell: 46 x 80mm.

Tesla Models

SR

Standard Range. For example, a M3SR refers to the Model 3 Standard Range model.

SR+

The Standard Range Plus variant has a larger battery than the Standard Range and some additional features.

MR

Mid Range vehicle which was available for the Model 3 (discontinued)

LR

Long Range model which includes a larger battery than other variants. For example, a M3LR refers to the Model 3 Long Range model.

P

Performance model. This could refer to the performance model of any Tesla vehicle.

P3D

The performance variant of the Model 3 dual motor

P3D+

Performance Model 3. This term was used when Tesla offered the Model 3 with and without the additional performance hardware such as larger wheels and disc brakes and a spoiler. This model is commonly referred to as the P3D.

P3D-

The performance Model 3 without all the features in the P3D+

M3P

The same as P3D

MY

Simply referring to the Tesla Model Y

MX

Model X

MS

Model S

M3

Model 3

CT

Cybertruck

Motors & Drives

DM

DM refers to a Dual Motor vehicle

AWD

All Wheel Drive - In a Tesla, this means that at least two motors are powering the vehicle. Some cars contain two rear motors and a single front motor, while all Model 3s and Model Ys will contain a single front and rear motor.

RWD

RWD refers to the car being a rear-wheel drive vehicle. In Teslas that means that there's a single motor in the back powering the car.

Alternatively, you might see a M3RWD (Model 3 Rear Wheel Drive).

General Information

EV

Electric Vehicle

PHEV

Plug-in Hybrid Electric Vehicle (ICE/EV combo)

LHD

Left-hand drive

RHD

Right-hand drive, as used in Australia, England and Japan

OEM

Original Equipment Manufacturer

Artificial Intelligence

NN

Neural Network refers to AI and is a subset of Machine Learning (ML) that Tesla uses to develop Autopilot

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Tesla's AI6 FSD Computer to Be Manufactured in Texas by Samsung, Tesla to Collaborate

Not a Tesla App

While we haven’t even seen AI5, Tesla is already thinking about its next set of chips that will power Tesla’s future FSD computers. In a set of posts on X, Elon Musk outlined the future of Tesla’s AI hardware, stating that its “strategic importance is hard to overstate.” He also revealed that Samsung, the current manufacturer of Tesla’s AI4 chip, will produce the next-generation AI6 chip at a new, dedicated fabrication facility in Texas.

While AI4 is already used in Tesla’s Robotaxis, which are practically driving autonomously, it’s hard to imagine where the company will be with a computer that’s many more times as powerful. Things like the recent video of a Tesla stopping at a toll booth, waiting for the driver to pay, and then taking off will become commonplace, not only at booths but also in various nuanced scenarios, such as someone waving you by, or stopping for a friendly neighbor that waves you down.

Samsung’s giant new Texas fab will be dedicated to making Tesla’s next-generation AI6 chip. The strategic importance of this is hard to overstate.

Samsung currently makes AI4.

TSMC will make AI5, which just finished design, initially in Taiwan and then Arizona.

— Elon Musk (@elonmusk) July 28, 2025

The Current Two-Language Problem

To understand the need and brilliance behind why Tesla is doing what it's doing with AI6, we need to take a look at the problem it is being engineered to eliminate. Currently, Tesla, like many others, faces a real two-language problem in its AI development.

The vast majority of its AI training is done on a supercomputer cluster, Cortex, which is built around Nvidia’s powerful H200 GPUs. However, the vehicles that run the software use Tesla’s custom-designed hardware - HW3/AI3 or HW4/AI4. This means that every time the AI model is improved - whether the vision neural nets or the ones that determine distance, or any of the many little parts that come together to build FSD as a whole - there’s a whole second step. It must be developed and validated on Nvidia’s architecture, then rebuilt and re-validated to run on Tesla’s own AI hardware.

Tesla runs AI4 chips side-by-side with the H200 GPUs in Cortex to minimize this, but that still means there is a step in between the training getting completed and the actual model being able to run on a vehicle. This slows down the feedback loop from training to deployment, even if Tesla has built a Universal Translator to help move FSD from one piece of hardware to another.

AI6 Solution: One Chip to Rule Them All

AI6 is the definitive solution to this problem. While the upcoming AI5 chip (to be made by TSMC) represents a performance leap over AI4, AI6 will be a transformative leap in architecture. 

The key innovation of AI6 is the direct integration of Tesla’s Dojo Supercomputer chip architecture into the same hardware that will be in Tesla’s vehicles and Optimus. The goal is to closely integrate the training and vehicle hardware.

By having the same Dojo architecture in the data center for training and in the vehicle for inference, Tesla will have a single, unified hardware pipeline. The two-language problem vanishes, drastically simplifying Tesla’s development process and enabling a much faster pace of innovation and updates.

Manufacturing Collaboration

The plan for AI6 goes beyond just chip design. Elon’s announcement revealed that Tesla plans to build a strong manufacturing partnership with Samsung. After all, much of Tesla’s expertise is focused on the machines that build the machines.

Samsung has agreed to allow Tesla to assist in maximizing manufacturing efficiency at the new Texas fab. It’s unusual to see this kind of relationship between the fabricator and the client. Elon doubled down on this - he wants to walk the fab lines to personally accelerate the pace of progress.

Samsung agreed to allow Tesla to assist in maximizing manufacturing efficiency.

This is a critical point, as I will walk the line personally to accelerate the pace of progress. And the fab is conveniently located not far from my house 😃

— Elon Musk (@elonmusk) July 28, 2025

Tesla isn’t just designing the chip, but helping to make sure it’s made in the most efficient and optimal way possible, all while leveraging Tesla’s experience and Samsung’s fab skills in one facility.

Fully Integrated

Tesla’s AI6 announcements come as a surprise since Tesla is still a year out from releasing AI5, but it shows that Tesla plans to integrate even more of its AI stack. From influencing the manufacturing process of the chip itself to designing a unified hardware architecture for both training and inference, Tesla is building a self-reinforcing ecosystem. 

This approach will create a feedback loop that allows for rapid improvement. While AI5 will be a big step up from the current generation, AI6 is revolutionary as it becomes Tesla’s major AI platform.

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Lars & Elon Discuss the Future of Tesla: Roadster, Cybercab, Robotaxi, Optimus and More

Not a Tesla App

At the recent X Takeover event this past weekend, two of Tesla’s most important leaders gave in-depth interviews that provided a unique view into Tesla’s path forward and how everything comes together internally.

An interview with Elon Musk laid out the grand vision for Tesla and his other companies, focusing on the ambitious “what and why.” Later, Head of Vehicle Engineering Lars Moravy provided the more grounded, engineering-focused “how,” detailing the immense work it takes to turn the vision into a reality.

What emerged from these conversations was a clearer picture of Tesla’s strategy: a relentless, long-term vision for the future of transportation, AI, robotics, and energy, supported by a world-class engineering team capable of developing the processes to turn these products into a reality.

Robotaxi & Cybercab

For years, the concept of Unsupervised FSD, as well as Robotaxis, has been the focal point of Tesla’s future. In his interview, Elon provided fresh details on the way they expect the business model to work. Tesla plans to operate a fleet where some vehicles are company-owned, while others are owned by customers. This is essentially a combination of Uber and Airbnb, taking a bit of a hybrid approach between the two different styles. 

He also went on to confirm that the purpose-built, two-seater Cybercab would complement, but not replace, Tesla’s existing models. This is key, because many have thought that Tesla would end their consumer vehicle sales or drastically reduce them as they transitioned to an AI services company, and became less of a car company. Now, it seems we know that they’ll have a lasting stake in personal car ownership.

The Cybercab, which is a revolutionary vehicle without driver controls, requires an equally revolutionary process to build it. In his interview, Lars Moravy provided the answer and detailed the unboxed manufacturing process that Tesla has been developing.

The unboxed method challenges a century of established automotive assembly by breaking the vehicle down into smaller, parallel sub-assemblies, allowing more work to be done simultaneously. The goal is to drastically shorten the main assembly line, enabling vehicle sections to be built in parallel and come together at the end.

Lars also noted that Tesla has already done the initial batch of crash testing for the Cybercab prototypes, and the vehicle has passed with flying colors. This isn’t surprising for Tesla, which integrates vehicle safety right into the structure of the vehicle, building castings that transfer force away from occupants.

The Semi

While Elon’s interview focused on some of his grander ambitions like Mars colonization, Lars provided some tangible updates on two of Tesla’s most anticipated vehicles.

On the Tesla Semi, Lars confirmed that progress is well underway at the Semi factory in Reno, Nevada. After years of focusing on engineering prototypes to ensure the reliability of a commercial workhorse vehicle, Tesla is now expected to ramp up production by the end of 2025, continuing through into early 2026. The business case for the Semi is crystal clear - build a no-brainer choice for shipping and logistics companies, who need to weigh the initial buy-in and infrastructure costs against operating costs per mile.

The Semi, just like other EVs, absolutely trumps diesel trucks in cost per mile, due to lower energy costs and less maintenance. However, the somewhat hidden advantage here is that truck drivers drastically prefer to drive the Tesla Semi over other diesel trucks, citing things such as better visibility, a smoother ride, and easier driving. These are advantages that could lead to improved employee retention and easier driver recruitment.

Meanwhile, the Semi simply needs to have infrastructure installed at the starting and ending locations for major delivery companies, enabling end-to-end supply chain handover.

The Roadster

Lars also talked about Tesla’s upcoming Roadster, confirming that it’s still in development, with the team preparing for a mind-blowing demo sometime soon. Elon previously hinted at this demo during a visit to the Tesla Design Studio, where he said a mind-blowing demo would be coming by the end of the year.

The goal for Tesla is to make it the last, best driver’s car before the world begins transitioning to full autonomy. Lars also touched on one of the biggest challenges with the Roadster. There is an immense engineering challenge being taken on now - and it's the SpaceX package. This package is set to use cold-gas thrusters to push the Roadster past what is conventionally possible. In fact, just as Elon has previously mentioned, the Roaster may be able to “fly a little.”

Last, best driver’s car

• Lars Moravy

You can watch the full interview below. Lar’s portion on the Roadster starts at 26:30.

Optimus: Sustainable Abundance

One of the most ambitious parts of Elon’s vision is the Optimus humanoid robot. He has stated his belief many times that the robotics business could be many times more valuable than Tesla’s entire automotive business, and if it works as planned, it definitely will be.

The current Optimus V3 design is intended for volume production, with Elon foreseeing a future market of billions of humanoid robots - not made just by Tesla, but the market as a whole. That many units could simply eliminate human poverty and usher in an age of sustainable abundance.

That grand vision is built on top of the manufacturing and automation expertise that Lars’ team is pioneering every day. With volume production of Optimus to begin next year, and real work already being done in Tesla’s factories, we may see humanoid robots making a real impact on the lifestyle and livelihood of people within the next few years.

The Unfair Advantage: Getting Sh*t Done

All of these ambitious ideas and products are enabled what what is perhaps Tesla’s true sauce - its unique internal culture of getting sh*t done. Lars’ interview provided us with a rare look inside to see just how it all comes together.

He described working with Elon as unique - the discussions are grounded in physics, and Elon trusts his teams to turn his dreams and ambitions into reality. This, in turn, creates a culture of mutual respect and high expectations. 

The collaborative spirit extends to the relationship between engineering and design, which Lars described as highly unusual for the auto industry. Rather than the two teams being hostile to each other, they work together to make bold design and engineering choices, like the Cybertruck, into reality.

Underpinning all of this is what Lars himself calls Tesla’s superpower: in-house automation and manufacturing engineering teams. These teams work to design the machine that builds the machines - innovating and solving problems at a level and speed that is simply not possible when relying on external vendors.

This combination of a relentless long-term vision, alongside a first-principles engineering culture, allows Tesla to take big risks and make big plays that define its future path. While all of Tesla’s timelines are ambitious, these interviews make it clear that the ambitious vision is paired with a concrete and innovative plan for execution.

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