Nissan, Valeo, Wayve: What a System Tier 1 Means for ADAS

Suppose you make camera modules, radar chips, connectors, or circuit boards, and one of your customers is a Japanese automaker. Then a press release announces that the automaker has picked a "System Tier 1" for its next driver-assistance system. Who will now approve your part, who will set the test conditions, and who will you send your data to?

That is the question behind a recent announcement. On October 1, 2026, Valeo announced that Nissan had selected it as the System Tier 1 for Nissan's next-generation ProPILOT driver-assistance program (source: Valeo press release, October 1, 2026). Valeo will combine sensors, ADAS computing, and software, build in the AI driving software from the UK company Wayve, and then validate the whole system and take it into mass production.

This guide separates what has been announced from what has not. It then explains what a System Tier 1 is, why automakers are handing more integration work to suppliers, and what this can mean for sensor, electronics, and materials suppliers. It ends with questions to ask your customer and a short email you can adapt. For the basics of how tiers and keiretsu work in Japan's auto industry, see Japanese Automotive Supply Chain: Tiers, Keiretsu, Pricing.

Contents

1. The News: What Nissan and Valeo Announced
2. What Is a System Tier 1? How It Differs From a Traditional Tier 1
3. Next-Generation ProPILOT: Who Does What
4. Why Integration and Validation Are Moving to Suppliers
5. A Different Model: Stellantis and Wayve
6. What This Can Mean for Suppliers
7. Questions to Ask Your Customer
8. What to Watch Next
9. Where This Picture Does Not Apply
10. FAQ
11. Sources

The News: What Nissan and Valeo Announced

Key Points of the Announcement

According to Valeo's release dated October 1, 2026, Valeo will supply a single platform that combines sensors, high-performance ADAS computing, an ADAS domain controller, and software. Wayve's "Wayve AI Driver" software sits on this platform as the layer that makes driving decisions. Working with Nissan and Wayve, Valeo will validate, integrate, and industrialize the complete system, which means taking it from a working design to a product that can be built in volume.

The launch timing came earlier, from Nissan. When Nissan announced its agreement with Wayve on December 10, 2025, it said the first model with next-generation ProPILOT is planned to go on sale in Japan in fiscal 2027. Nissan's fiscal year starts in April, so this means between April 2027 and March 2028. Valeo's selection settles who will pull the system together for that production launch.

Valeo is a major French auto parts maker. Its release lists 2025 sales of EUR 20.9 billion, about 100,000 employees, and 149 plants and 59 R&D centers in 29 countries. Marc Vrecko, CEO of Valeo's Brain Division, described the program as one that combines Valeo's sensors, high-performance computing, and software expertise with AI.

Confirmed vs. Not Yet Disclosed

When you read news like this, keep the stated facts apart from what people infer from them. Valeo's release describes the sensors only as a "comprehensive sensor portfolio." It does not say which of the cameras, radars, or LiDAR Valeo will supply.

The release also leaves out the vehicle models, the level of automation in production cars, and how contractual responsibility is split. If you are judging the impact on your own business, sort the facts as in Figure 1 before you draw conclusions.

Figure 1: What Is Confirmed and What Is Not Yet Disclosed

The scope of supply and the roles are stated. Vehicle models and the split of responsibility are still to come.

Stated in the announcements

• Valeo selected as System Tier 1 for next-generation ProPILOT (October 1, 2026)
• Scope: sensors, ADAS computing, ADAS domain controller, software
• Wayve AI Driver integrated as the driving-decision layer
• Valeo validates, integrates, and industrializes the system with Nissan and Wayve
• First model planned for sale in Japan in fiscal 2027 (Nissan)

Not yet disclosed

• Which sensors Valeo supplies, and how many
• The first vehicle model and later models
• Sensor set on production cars (decided separately from the prototypes)
• How warranty and field-issue responsibility is split with Nissan
• Which Japanese parts makers take part, and in what

Based on announcements by Valeo (October 1, 2026) and Nissan (September 22, 2025 and December 10, 2025).

What Is a System Tier 1? How It Differs From a Traditional Tier 1

In the usual tier structure, Tier 1 suppliers ship directly to the automaker, Tier 2 suppliers ship parts and materials to Tier 1s, and Tier 3 sits below them. (Our guide to the Japanese automotive supply chain covers this structure in detail.) Seats, brakes, and HVAC have long been delivered by Tier 1s as complete units.

ADAS worked differently. The front camera, including its image processing, might come from Company A, the radar from Company B, and the parking sonar from Company C. Automakers often bought sensors and control units separately for each function and connected them inside the vehicle themselves.

A System Tier 1 is a Tier 1 that takes those separate parts and delivers them to the automaker as one system. In Valeo's case, that means combining sensors, computers, and software, bringing in AI software from another company, checking that the whole system works to specification, and getting it ready for mass production.

Figure 2: How ADAS Is Sourced (Traditional vs. System Tier 1)

The difference is who does the integration work: the automaker or the supplier.

Traditional (sourced by function)

Sensors and control unitsCamera, radar, sonar, and so on, each bought from a different Tier 1

Delivered separately

AutomakerConnects the units in the vehicle and integrates and evaluates the whole system

System Tier 1 model

Sensors, computers, AI softwareIts own products plus software and parts from other companies

Integrate, validate, industrialize

System Tier 1Finishes and delivers the complete system

Delivered as a system

AutomakerSets the requirements, installs the system, and makes the final decisions

The actual split varies by program. The automaker may still specify some parts.

This changes how a supplier is judged. Part performance and price still matter, but the bigger question becomes whether the supplier can combine many parts and software and bring them to mass production safely and on schedule.

Figure 3: Traditional Tier 1 vs. System Tier 1

When the deliverable changes from a part to a working system, the scope of responsibility grows.

Traditional Tier 1 (parts and units)

System Tier 1

What it delivers

Units for one function, such as a camera or radar

A complete system integrating sensors, computers, and software

How it is judged

Part performance, quality, price, delivery

Behavior after integration, safety validation, time to mass production

Other companies' products

Mainly its own products

Brings in and combines software and parts from others

Contact with the automaker

Specification meetings for each unit

Single point of contact for system-level requirements and changes

Strengths needed

Depth in one technology, cost competitiveness

Integration skills, including software, validation, and project management

A general comparison. The allocation of responsibility under the Nissan–Valeo contract has not been disclosed.

"System Tier 1" does not mean a supplier that takes on everything. The automaker still decides on the safety of the vehicle as a whole and on which functions to release, and when.

The title matters less than who holds which responsibility. Look at that split and news like this becomes much easier to read.

Next-Generation ProPILOT: Who Does What

Nissan unveiled its next-generation ProPILOT technology in September 2025. It combines Wayve AI Driver with Ground Truth Perception, Nissan's own technology for sensing the vehicle's surroundings. The aim is driver assistance that feels like an experienced driver, not only on expressways but also on surface streets with complex traffic. It is classified as SAE Level 2, so the driver must monitor the system at all times.

Wayve AI Driver is AI that reads the situation from camera images and other inputs and decides how to drive. Nissan describes it as applying state-of-the-art "embodied AI" to driving. Ground Truth Perception uses a next-generation LiDAR (a sensor that measures distance to surrounding objects with laser light) to detect objects accurately at long range.

The prototypes shown in September 2025 carried 11 cameras, 5 radars, and 1 next-generation LiDAR. That is the prototype setup. Nissan has not said which sensors, or how many, production cars will use, or which of them Valeo will supply.

Figure 4: Roles of the Three Companies in Next-Generation ProPILOT

Who handles what, as far as the announcements show.

OEMNissanPlans next-generation ProPILOT and sets the requirements; Ground Truth Perception technology; installs the system and sells the vehicles. First model planned for sale in Japan in fiscal 2027

AI SOFTWAREWayveSupplies Wayve AI Driver, the AI software that makes driving decisions. Works with a range of camera, radar, and LiDAR setups

SYSTEM TIER 1ValeoSupplies sensors, ADAS computing, the domain controller, and software, and integrates Wayve's software. Handles validation and industrialization

As of October 2026, the sensor types Valeo will supply, the vehicle models, and the detailed split of responsibility among the three companies have not been disclosed.

ProPILOT first appeared in 2016 on the Nissan Serena. That version used a single (mono) camera to recognize the vehicle ahead and the lane markings, and it assisted steering, acceleration, and braking within a single lane on expressways. In 2019, ProPILOT 2.0 on the Skyline combined cameras, radars, sonars, and 3D high-definition maps, and it allowed hands-off driving within a single lane on expressways.

Each step added more sensors and more types of sensors. The next generation adds AI software and surface streets on top of that. The more components you combine, the more work it takes to validate them as one system, and that is a large part of why System Tier 1s are in demand.

Why Integration and Validation Are Moving to Suppliers

Why would an automaker hand integration to a supplier? There is more than one reason. Here are three that bear directly on how ADAS is sourced.

Combining AI With Many Sensors

Surface streets present far more situations than expressways: pedestrians, cyclists, intersections, road work. To handle input from many sensors at once and confirm that the AI's decisions stay within safe limits, you need huge amounts of driving data and testing.

If the sensors, computers, and software come from different companies, just finding where a fault comes from takes time. If one company validates them together from the start, fault isolation and fixes go through a single point of contact.

Consolidating Processing in Domain Controllers

Vehicle electronics are moving away from one dedicated ECU (electronic control unit) per function. Processing is first grouped by domain, such as driver assistance or body, in a "domain controller," and then concentrated in a small number of high-performance computers. The overall electronic layout of the vehicle is called its E/E (electrical/electronic) architecture.

Once processing sits in one place, sensors mainly send data, and the central computer and its software make the decisions. Valeo's supply of an ADAS domain controller fits this trend. The company responsible for the central computer also tends to coordinate the specifications of the sensors and software connected to it.

Figure 5: How E/E Architecture Is Changing

The more processing is centralized, the clearer the split between the parts that plug in and the party that integrates them.

01DistributedA dedicated ECU for each function. The camera and its processing, and the radar and its processing, each stand alone

02DomainProcessing grouped by domain (driver assistance, body, powertrain) in domain controllers

03CentralizedA few high-performance computers handle processing for the whole vehicle; software updates add functions

The pace and form of this shift differ by automaker and model, and several architectures coexist.

All that centralized processing runs on software, so embedded software keeps growing in size and importance, and that is changing the work of embedded software engineers.

The Shift to Software-Defined Vehicles (SDVs)

In May 2024, Japan's Ministry of Economy, Trade and Industry (METI) and Ministry of Land, Infrastructure, Transport and Tourism (MLIT) published the Mobility DX Strategy. It treats software-defined vehicles (SDVs) as the next generation of cars: their functions are updated continuously over the network, and they create new value such as more advanced driving functions. The strategy targets a 30% share of global SDV sales for Japanese automakers in 2030 and 2035.

Driver assistance is a prime example of a function that improves through SDV updates. Automakers are rethinking which parts they should keep in-house and which they should source from outside, and that rethinking shows up in how ADAS is sourced.

A Different Model: Stellantis and Wayve

Nissan is not the only automaker working with an AI software company on driver assistance. On May 21, 2026, Stellantis announced a partnership with Wayve to build Wayve AI Driver into STLA AutoDrive, Stellantis's own driver-assistance platform, with the goal of supervised hands-free driving. The first vehicle integration is planned for North America in 2028.

Both automakers use the same Wayve software but organize the work differently. Stellantis announced that it will build the software into its own platform. Nissan chose to give the integration and industrialization role to Valeo.

Rather than one approach being right, each automaker draws its own line between what it keeps in-house and what it hands to others. For a parts supplier, this means that even for the same technology, the party that sets your specifications and asks for your test data may be the automaker on one program and a System Tier 1 on another. Check the setup customer by customer.

What This Can Mean for Suppliers

How does a supplier's work change when a System Tier 1 sits between it and the automaker? What follows is general, not specific to the Nissan program. Which Japanese companies are involved in that program has not been announced, so apply these points to your own situation.

Sensor and Electronic Component Makers

This group includes makers of image sensors for cameras, semiconductors for radar, connectors, and passive components. For them, the party that decides whether to adopt a part shifts more often from the automaker to the System Tier 1. The target of design-in activity, getting your part designed into a product at an early stage, changes accordingly.

Related: Japanese Sales Engineers and FAEs: Roles and Handoffs

System Tier 1s often supply several automakers worldwide, so a part adopted once can spread to several vehicle models. On the other hand, the evaluation criteria follow that Tier 1's internal standards.

Japanese Tier 1 Suppliers

Japanese Tier 1s that make ADAS sensors or ECUs will more often be judged on their ability to integrate a system, not only on the parts they make. Whether a company can coordinate software, validation, and other companies' products can change the range of work it is able to win.

Some will instead supply specific sensors or units under a System Tier 1. Whether to aim for the integrator role or to sharpen parts that integrators choose is a decision that shapes the direction of the business.

Tier 2 and Materials Suppliers

For Tier 2s and materials makers that supply circuit boards, housings, thermal materials, or wire harnesses, requirements will come down from the System Tier 1. High-performance computers generate a lot of heat, and requirements for heat dissipation, vibration resistance, and long-term reliability tend to get stricter.

Because driver assistance affects human life, suppliers are more often asked to follow automotive functional safety (ISO 26262) in how they run development and keep quality records. For cars whose software is updated over the network, more customers are also asking their suppliers to have cybersecurity measures in place.

Figure 6: Likely Changes by Supplier Type

The same news affects each type of supplier in a different way.

Sensors and electronic components

Who adopts your partDesign-in increasingly targets the System Tier 1. Once adopted, a part may spread to several automakers

Japanese Tier 1s

How they competeIntegration skills (software, validation, coordination) count alongside part performance. Integrator or specialist: a strategic choice

Tier 2 and materials

Where requirements come fromSpecifications come down from the System Tier 1. Expect demands on heat dissipation, vibration, reliability, functional safety, and security

General tendencies only. Actual business arrangements vary by program.

Questions to Ask Your Customer

When the setup changes, sales, purchasing, and quality assurance staff should check a few things with the customer early. "Who sets the specifications, and who receives the validation data?" is especially prone to misunderstandings during quoting and prototyping.

Figure 7: Four Questions to Ask Your Customer

Working through them in order helps prevent confusion over contacts and responsibility.

01Who sets the specifications?The automaker or the System Tier 1? Is your part specified by the automaker?

02When is the part chosen?Timing of prototypes and evaluation, and when to submit your proposal

03Where does validation data go?Test conditions and standards, and who receives the data, in what format

04Who handles changes and issues?Route for design-change notices, analysis of field issues, and who pays for them

Contract terms are set deal by deal. Confirm them in writing.

None of these questions is new. They are the basics to check whenever another tier is added to a supply chain. But in cars whose software keeps being updated, specifications can change even after mass production starts, so agreeing on the change-notification route at the start matters more than before.

Checklist Before You Quote an ADAS-Related Part

• Name of your direct customer and the System Tier 1 (if any) for this program
• The person who approves your part: automaker, System Tier 1, or both
• Whether the automaker specifies your part or leaves the choice to the System Tier 1
• Prototype and evaluation schedule, and the deadline for your proposal
• Test conditions and standards for validation, and the format for submitting data
• Whether functional safety (ISO 26262) work products or cybersecurity measures are required from you
• Route for design-change notices, including changes after start of production
• Who analyzes field issues and how the costs are shared

For the price-related questions to ask a Japanese automotive customer (target prices, cost-reduction requests, material supply), see the question list in Japanese Automotive Supply Chain: Tiers, Keiretsu, Pricing. For how Japanese buyers run the quoting stage, see RFQ to a Japanese Manufacturer: The 7-Step Hikiai Process.

Sample Email to Your Customer

You can adapt this short email when a customer tells you that a System Tier 1 will lead an ADAS program:

Subject: [Program name] – roles and contacts for [part name]

Dear [Name],

Thank you for letting us know about the new setup for [program name]. So that we can prepare our proposal correctly, could you confirm the following?

1. Who will approve our part: your company, the System Tier 1, or both
2. The schedule for prototypes and evaluation, and when you need our proposal
3. The test conditions and standards for validation, and to whom we should submit the data
4. The contact for design-change notices and for field-issue analysis

Best regards,
[Your name]

What to Watch Next

This announcement shows only part of the setup for bringing next-generation ProPILOT into production. Figure 8 shows what was decided at each step.

Figure 8: Timeline of Next-Generation ProPILOT Announcements

The technology came first, then the software partner, then the integrator.

• 2016First ProPILOT on the Serena. Driving assistance within a single lane on expressways
• 2019ProPILOT 2.0 on the Skyline. Hands-off driving within a single lane on expressways
• September 2025Nissan unveils next-generation ProPILOT technology, combining Wayve AI Driver and Ground Truth Perception
• December 2025Nissan and Wayve sign an agreement. First model planned for sale in Japan in fiscal 2027
• October 2026Valeo selected as System Tier 1, responsible for integration, validation, and industrialization
• Fiscal 2027 (planned)First model with next-generation ProPILOT goes on sale in Japan

Based on announcements by Nissan and Valeo. Plans are as of the date of each announcement.

Four points are worth following:

• Vehicle models: the first model with next-generation ProPILOT, and how far it spreads to other models.
• Production sensor set: what changes from the prototypes. Once this is clear, it will be easier to see which parts are involved.
• Japanese suppliers' roles: which sensors and materials each supplier takes on under the System Tier 1. For suppliers in Japan, this is likely the biggest question.
• Other Japanese automakers: whether they also turn to outside AI software and outside integrators, or keep that work in-house. The answer will redraw the map of who suppliers need to sell to.

Where This Picture Does Not Apply

This article describes general tendencies. How responsibility is allocated under the Nissan–Valeo contract has not been disclosed. The term "System Tier 1" covers different scopes at different automakers, and the automaker may still name specific parts or suppliers.

Stellantis, for example, announced that it will build outside AI software into its own platform, so sourcing arrangements differ by automaker and by program. Contract terms, warranty responsibility, and data requirements are set program by program, so confirm them in writing with your customer rather than assuming any model described here.

FAQ

What is a System Tier 1 supplier?

A System Tier 1 is a Tier 1 supplier that delivers a complete system rather than individual parts. It combines its own products with other companies' parts and software, validates the whole system, and prepares it for mass production. The automaker still sets the requirements and makes the final decisions on vehicle safety and feature releases.

What will Valeo supply for Nissan's next-generation ProPILOT?

According to Valeo's October 1, 2026 release, Valeo will supply sensors, ADAS computing, an ADAS domain controller, and software, and will integrate Wayve AI Driver. The specific sensor types and quantities have not been disclosed.

When will next-generation ProPILOT be available?

Nissan plans to sell the first model with next-generation ProPILOT in Japan in fiscal 2027 (April 2027 to March 2028). The model name had not been announced as of October 2026.

How is Nissan's approach different from Stellantis's?

Both use Wayve AI Driver. Stellantis announced that it will build the software into its own STLA AutoDrive platform, with the first vehicle integration planned in North America in 2028. Nissan gave the integration and industrialization role to Valeo as System Tier 1.

Sources

• Valeo's selection as System Tier 1, scope of supply, and company figures: Valeo, "Valeo Selected by Nissan as Partner for Next-Generation ProPILOT Program" (October 1, 2026)
• Japanese press coverage: Car Watch, report on Valeo becoming System Tier 1 supplier for next-generation ProPILOT (October 1, 2026, Japanese)
• Next-generation ProPILOT technology and prototype sensors: Nissan news release (September 22, 2025)
• Nissan–Wayve agreement and fiscal 2027 launch plan in Japan: Nissan news release (December 10, 2025, Japanese)
• ProPILOT 2.0: Nissan news release on the Skyline's ProPILOT 2.0 (May 16, 2019)
• First ProPILOT: MONOist, report on ProPILOT on the new Serena (July 14, 2016, Japanese)
• Stellantis–Wayve partnership: Stellantis news release (May 21, 2026)
• Mobility DX Strategy: METI, Mobility DX Strategy overview (published May 24, 2024, Japanese); U.S. International Trade Administration, "Japan Software-Defined Vehicles" (on the 30% target)