China EVs Face Quality Test as L4 Services Scale

China’s smart EV industry is entering a more demanding phase. On March 12-13, new data from China’s automotive quality watchdog ecosystem and fresh commercial milestones in autonomous mobility showed a market moving in two directions at once: rapid expansion in advanced driving and robotaxi services, but also rising pressure on product quality, software validation, and user trust. The latest reports from CheZhiWang and Carys Research found that 2025 vehicle complaints in China climbed to 227,803 cases, up 31.6% year on year, while separate announcements from Pony.ai and Hesai highlighted accelerating commercialization of L4 autonomous driving in passenger transport and logistics.

China’s EV quality problem is getting more visible

At the “2026 China Automotive Product Quality Trend Seminar” in Beijing, hosted by CheZhiWang and Carys Research, industry representatives reviewed how quality issues are evolving in the era of electrification and intelligent vehicles. More than 50 delegates from automakers and suppliers attended, with the organizers releasing two key studies:

• 2025 CheZhiWang Complaint Analysis Report
• 2026 China Automotive Product Quality Trend Analysis

The headline number is striking: 227,803 valid complaints were accepted in 2025, a 31.6% increase from the prior year and a record high.

Key findings from the 2025 complaint data

Several trends stand out for the Chinese EV market:

• New energy vehicles accounted for 44.8% of complaints
• Plug-in hybrids (PHEVs) recorded the highest complaint volume among NEVs
• ICE vehicles still led by complaint volume within a single powertrain category
• New cars became the main source of complaints
• Body accessories and electrical issues made up more than 60% of quality complaints
• Sales-related service disputes remained severe, including:
  • deposit refund disputes
  • unfulfilled sales promises
  • price adjustment complaints
• Model changeover disputes surged, especially conflicts between old and new versions of the same vehicle

One important nuance is that the industry-wide complaint-to-sales ratio fell to 58.4 per 10,000 vehicles, lower than in 2024. That suggests the market is growing fast enough that raw complaint volumes alone do not tell the full story. Even so, the absolute rise in complaints underscores how difficult it is for automakers to maintain quality while rapidly launching new EVs, PHEVs, and software-defined vehicles.

OTA, battery range displays, and ADAS trust are under pressure

According to Tang Weiguo, chairman and president of CheZhiWang and Carys Research, three major changes shaped the complaint landscape in 2025:

1. OTA updates became mainstream, but some vehicles still triggered controversy through practices such as power limiting or battery locking after delivery
2. Battery degradation under extreme conditions improved, yet users continued to complain about sudden drops in displayed daily driving range
3. Brand response times improved significantly, with complaint handling cycles shortened to just days in some cases

The bigger concern is structural. Tang argued that as automakers embrace new technologies, some are weakening their basic quality defenses:

• insufficient validation is pushing up early failure rates
• traditional quality issues remain unresolved
• intelligent features cannot compensate for weak core manufacturing quality
• advanced driving systems are facing a growing trust crisis

That last point was reinforced by the 2026 trend report, which found that complaints about advanced driver assistance systems are rising rapidly. The most common issue was described as “incorrect reactions” by the system, a phrase that captures the gap between technology marketing and real-world user experience.

New cars and older models are both creating risk

One of the more revealing conclusions from the industry reports is that quality risk is no longer concentrated only in freshly launched models.

For new vehicles

The reports suggest that complaints are appearing earlier in the ownership cycle, and users are becoming less tolerant of faults. That is a warning sign for Chinese EV brands pursuing aggressive launch schedules and frequent software updates.

Recommended responses include:

• more thorough validation during R&D
• better public opinion and user expectation management
• stronger software-hardware integration
• creation of internal quality case libraries
• incorporating user feedback into vehicle design
• focused optimization of advanced intelligent driving features

For older vehicles

Legacy models are now under growing pressure as “new technology” problems emerge after years on the road. Users are reporting more issues per complaint, and defect exposure is widening. The report also warned about the lagged outbreak effect: once a model reaches high volume in the market, defects can trigger concentrated complaint waves later.

That has major implications for battery systems, electronics, and aging intelligent driving hardware. For automakers, the message is clear: quality control cannot stop at SOP or delivery.

Complaint data at a glance

Not all brands performed poorly. 43 automotive brands beat the industry average complaint-to-sales ratio, and 67.4% of them were Chinese brands, with new energy vehicle brands performing particularly well. That suggests the market is becoming more polarized: some manufacturers are scaling successfully, while others are struggling to keep pace with the complexity of EVs and intelligent systems.

Factory quality is becoming a bigger differentiator

Another notable outcome from the seminar was the release of the annual Automotive Quality Excellence Factory evaluation. Based on 2025 passenger vehicle circulation data and user quality survey results, the ranking assessed factories on both quality performance and sales.

Among 596 vehicle manufacturing plants or production bases, 10 stood out:

• Jinan BYD Auto
• Jiangsu Yueda Kia Third Factory
• Jetour Kaifeng Base
• Lotus Global Intelligent Factory
• Voyah Golden Factory
• Shanghai Jinqiao Cadillac Factory
• Seres Super Factory (Longxing)
• SAIC Maxus Wuxi Factory
• SAIC Volkswagen Anting No.3 Plant
• Xiaomi Auto Factory

This list is significant because it includes both established joint-venture plants and newer Chinese EV manufacturing operations. It also reinforces a critical competitive truth in today’s EV market: factory execution is now as important as software innovation.

China is also pushing toward new standards for EV quality

In response to the issues identified in the complaint data, CheZhiWang and Carys Research said they will work with regulatory research bodies and major universities in 2026 to develop a group standard for new energy vehicle three-electric systems—battery, motor, and electronic control.

The aim is to create a user-experience-based perceived quality evaluation method for core EV systems. If successful, that could provide the industry with a more consistent benchmark for judging real-world EV quality rather than relying only on internal test metrics.

For a market as competitive as China’s, this matters. Consumers are no longer comparing only range, acceleration, or infotainment features; they are increasingly judging how reliably the technology works over time.

L4 commercialization is accelerating despite the quality debate

While the quality conversation points to caution, two separate announcements on March 13 showed that autonomous mobility in China is still scaling quickly.

Pony.ai expands Robotaxi access through Tencent

Pony.ai announced that its Robotaxi service has been integrated into Tencent’s “Travel Services” mini-program, with Guangzhou becoming the first launch city. Users can now request autonomous rides through WeChat when their trip origin and destination are near designated Pony.ai pick-up and drop-off points. The service is also set to arrive on the Tencent Maps app.

This is an important commercialization step because Tencent’s super-app ecosystem reduces friction for consumer access. Instead of downloading a dedicated robotaxi app, users can book through a familiar mobility interface.

Pony.ai’s Guangzhou milestones include:

• operating in the city since 2017
• becoming the first company in Nansha to launch autonomous mobility service
• opening autonomous routes in early 2024 linking urban Guangzhou with major hubs such as Baiyun Airport and Guangzhou South Railway Station
• launching service in Guangzhou University Town in December 2025
• reaching 23 average daily orders per vehicle in that University Town operation

The company says it now operates driverless mobility services across Beijing, Shanghai, Guangzhou, and Shenzhen, with a fleet of more than 1,000 autonomous mobility vehicles.

Hesai lands a 200,000-unit lidar deal with JIUSHI

In the logistics segment, Hesai Technology announced an exclusive nomination for 200,000 lidar units from JIUSHI Intelligent. JIUSHI’s latest-generation RoboVan will be equipped with Hesai lidar across the range, supporting L4 autonomous driving for unmanned delivery.

The scale matters. JIUSHI says it has already:

• achieved commercial operations in more than 300 Chinese cities
• accumulated over 100 million kilometers of real-world road mileage
• delivered and operated more than 20,000 vehicles globally

With China’s urban delivery market now exceeding the trillion-yuan level, unmanned logistics vehicles are becoming a serious candidate for solving last-mile capacity bottlenecks. A 200,000-unit lidar program is not just a supplier win for Hesai; it is evidence that L4 logistics in China is moving from pilot projects into true industrial-scale deployment.

Autonomous mobility snapshot

Why this matters

These developments reveal the central tension in China’s EV and autonomous driving market.

On one side, the industry is commercializing at remarkable speed:

• robotaxi booking is moving into mainstream digital platforms like WeChat
• lidar procurement is scaling into six-figure volumes
• autonomous logistics is expanding beyond test zones into broad commercial operation

On the other side, user tolerance for product flaws is falling just as software-defined vehicles become more complex:

• EV complaint volumes are rising sharply
• PHEVs and intelligent features are generating new pain points
• ADAS systems are facing real-world trust issues
• OTA-enabled vehicles bring convenience, but also new controversy when functionality changes post-sale

For Chinese automakers and mobility tech players, this means commercialization alone is not enough. The next phase of competition will be decided by who can combine scale, validation, and reliability.

Global implications

For global observers, China’s latest EV news offers two lessons.

First, the country remains the world’s most important proving ground for EV quality management at scale. Because China launches vehicles quickly and iterates software aggressively, its complaint data can act as an early warning system for issues that may later appear in other markets.

Second, China is still setting the pace in the commercialization of autonomous mobility. Whether through Pony.ai’s Tencent integration or JIUSHI’s high-volume RoboVan deployment with Hesai lidar, the market is showing how digital ecosystems, hardware suppliers, and fleet operators can work together to move L4 services toward mass adoption.

In short, China is not slowing down. But the winners in the next stage of the Chinese EV market will not be the companies with the loudest claims about smart features—they will be the ones that can prove those features work consistently, safely, and at scale.

What comes next

Expect three themes to dominate the rest of 2026:

• Stricter quality scrutiny for EVs, PHEVs, and advanced driver assistance systems
• Greater emphasis on three-electric system standards and user-perceived quality metrics
• Faster rollout of L4 applications in both passenger mobility and last-mile logistics

The Chinese EV industry is entering a maturity test. Its technology leadership is no longer in doubt. The bigger question now is whether quality control, standards, and customer experience can keep up with the speed of innovation.