Self-Driving Cars: Levels, Technology and the Players

Topic guide · 8 guides

Self-Driving Cars: Levels, Technology and the Players

How self-driving cars work, the SAE autonomy levels 0 to 5, the AI and sensors behind them, and where Waymo, Tesla and Mercedes stand today.

0–5The SAE levels of automation
Level 4Waymo's driverless robotaxis
Level 3The highest you can buy today
200M+Waymo's autonomous miles driven

Autonomous driving is the most hyped and most misunderstood corner of the car world. This hub explains how it actually works, from the SAE levels to the AI, sensors and chips behind the wheel, and sorts the real progress from the marketing.

Self-driving guides in this topic

Waymo: Are Robotaxis the Next Big Thing?

Waymo: Are Robotaxis the Next Big Thing?

Waymo's driverless robotaxis are already on public roads. How Waymo's self-driving cars work, where they operate, and whether they are the future. Read guide
Autonomous Driving Levels 0 to 5 Explained (SAE)

Autonomous Driving Levels 0 to 5 Explained (SAE)

The SAE autonomous driving levels 0 to 5, explained simply. What each level of self-driving really means, from driver assistance to full automation. Read guide
How AI Powers Autonomous and Self-Driving Cars

How AI Powers Autonomous and Self-Driving Cars

How does AI enable self-driving cars? The role of machine learning, computer vision and neural networks in autonomous driving, explained simply. Read guide
Tesla FSD vs Mercedes Drive Pilot: Who Leads?

Tesla FSD vs Mercedes Drive Pilot: Who Leads?

Tesla Full Self-Driving vs Mercedes Drive Pilot: how the two autonomous driving systems compare, what each can really do, and who is ahead. Read guide
How 5G Powers Self-Driving Electric Cars

How 5G Powers Self-Driving Electric Cars

How 5G connectivity helps autonomous electric vehicles talk to each other and the road. The role of low latency and V2X in self-driving cars. Read guide
Nvidia in Cars: From GPUs to Self-Driving Brains

Nvidia in Cars: From GPUs to Self-Driving Brains

How Nvidia went from gaming GPUs to powering autonomous cars. Nvidia DRIVE, its automotive chips, and why it matters for self-driving vehicles. Read guide
Software-Defined Vehicles (SDV): What They Are

Software-Defined Vehicles (SDV): What They Are

What is a software-defined vehicle (SDV)? Why cars are becoming computers on wheels, how over-the-air updates work, and why carmakers are racing to it. Read guide
Why Carmakers Are Reinventing Car Electronics (E/E)

Why Carmakers Are Reinventing Car Electronics (E/E)

Why automakers are pouring billions into software and E/E architecture. How zonal computing and software-defined cars are reshaping the industry. Read guide

The essentials

The levels of autonomy, and the tech behind them

It starts with the language. Our guide to autonomy levels 0 to 5 is the place to begin, then see how AI actually drives a car, the role of Nvidia's chips, and how 5G adds awareness beyond the sensors.

Who leads today

Different companies take different routes. Waymo runs genuine driverless robotaxis, while Mercedes and Tesla chase autonomy from opposite ends. Underneath it all sits the software-defined vehicle and the new car electronics that make it possible.

Frequently asked questions

What are the levels of self-driving?

The SAE scale runs from Level 0 (no automation) to Level 5 (drives anywhere with no human). Levels 1 and 2 assist, Level 3 drives in limited conditions, and Level 4 is fully driverless within a mapped area.

Can you buy a fully self-driving car?

No. Most cars on sale offer Level 2 assistance and a few luxury models offer limited Level 3. True driverless Level 4 exists only in robotaxis like Waymo, not in cars you can buy.

Is Tesla Full Self-Driving actually self-driving?

No. Despite the name it is a Level 2 driver-assistance system that needs an attentive driver ready to take over. It is capable on many roads but not legally or technically autonomous.