Building the most extreme cars in the most rigorous testing ground! Li Yunfei reiterates BYD's attitude toward car manufacturing.

"Only after passing the most rigorous tests can the most极致 cars be built." On September 13, Li Yunfei, General Manager of BYD Group's Brand and Public Relations Department, stated at the BYD Fan Carnival that BYD insists on conducting all-dimensional testing at standards higher than national standards, with validation covering complete vehicles, subsystems, and components, and ventures to global extreme conditions such as high temperatures in the Middle East, high humidity in South America, and extreme cold in the Arctic Circle for trials.

Li Yunfei reiterates BYD's attitude toward car manufacturing

Safety across all models: from million-yuan class to mainstream, BYD's "road tank" title is not undeserved

As a global leader in new energy vehicles, the pursuit of safety and quality has long been engraved into BYD's corporate DNA. Not long ago, the Yangwang U7 completed a 30,000-kilometer extreme endurance challenge in 8 days, 19 hours, and 58 minutes, setting a new world record—extreme tempering forges quality belief, and this achievement is precisely the inevitable result of BYD's long-termist approach to car manufacturing. Even more noteworthy is that the vehicle participating in the test was not a specially built car, but a mass-production test-drive vehicle randomly and blindly selected from a dealership, with no special modifications. Under the high-temperature environment of 36°C and 80% high humidity in Nanning, Guangxi, this mass-production car completed more than 350 fast-charge and fast-discharge cycles in total—equivalent to simulating the usage scenario of an ordinary user charging once a week, compressing 6-7 years of charging frequency into 9 days of concentrated testing, while battery capacity retention still reached 98.7%. This result silently declares: a truly reliable car dares to face the most extreme challenge validation.

On August 15, 2026, the Yangwang U7 completed a 30,000-kilometer endurance challenge

The Yangwang U7's extreme testing is only a microcosm. In BYD's landscape, the deep integration of safety and quality is a consensus across the entire matrix from Yangwang, Denza, Fangchengbao to the BYD brand. The scorecards from authoritative institutions provide the hardest proof:

The Denza N9 received a full-score grand slam in CIRI testing, becoming the first model in the 9 years since CIRI began evaluations to win 5 top ratings, setting the highest rating in history;

The Bao 8 received a five-star safety certification in CATARC's C-NCAP, becoming China's first hybrid non-load-bearing model to achieve this result;

The Han L passed CATARC's electric safety evaluation with a high score, becoming the industry's first model to obtain a five-star safety certification;

The Sea Lion 07EV consecutively secured the highest safety ratings in three major markets—Europe, China, and Australia—in 2025, possessing a globally unified high safety standard.

……

The Denza N9 achieved a full-score grand slam in CIRI testing

But even more brutal than the laboratory is the test of the real world. BYD's safety and quality have been most powerfully verified in real sudden accidents time and again: an Atto 3 encountered a missile explosion at close range in Israel, with surrounding vehicles completely destroyed, yet the vehicle's structure remained intact, the battery was unharmed, and all 5 occupants survived; not long ago, a Tang encountered a side impact from a hundred-ton heavy truck and fell down a slope, yet the occupant cabin frame showed no obvious intrusion, all airbags deployed, the battery did not catch fire, and the 4 people inside suffered only minor injuries. The unofficial title "road tank" is the simplest recognition from millions of users of BYD's safety and quality.

An Atto 3 remained structurally intact after a missile explosion at close range in Israel

Safety DNA: from the very first day of car manufacturing, BYD wrote "safety and quality" into its strategy

Since the beginning of its car-making endeavor, BYD has elevated safety and quality to a core corporate strategy, running through the entire process of vehicle definition, research and development, validation, and production. Core technologies such as Blade Battery, e⁴, and God's Eye are all designed at the foundational level around safety, and each technology must undergo rigorous validation before being implemented.

At the hardware level, BYD has more than a dozen testing bases in Shenzhen, Xi'an, and other places, with over 300 specialized laboratories, building a complete and strict testing system and implementing all-dimensional validation higher than national standards. Li Yunfei introduced on site that BYD's Nanning test track is expected to be fully completed in 2027, and projects such as the high-speed oval track and durability roads are already in use. This test track will link and complement BYD's existing test tracks in Shenzhen, Xi'an, and other locations, as well as the three-high testing grounds in Yakeshi, Turpan, Golmud, and other places, continuously improving BYD's complete vehicle validation infrastructure network.

BYD pioneered China's first floating water test base

At the standards level, BYD upholds the principle that "corporate standards are 150 points," doing more than 50% extra "bonus questions" beyond industry standards, proactively raising the bar and building in redundancy for validation—reliability testing starts at 60,000 kilometers per vehicle, twice the industry standard; complete vehicle durability validation starts at 1 million kilometers, with the Yangwang U7 reaching as high as 10.49 million kilometers, far exceeding users' actual driving mileage.

In addition, BYD also independently conducts a series of "boundary-exploring experiments," exploring the upper limits of safety in areas where the state currently has no mandatory standards, such as slippery-floor anti-slip testing in underground garages and complete vehicle floating-water driving tests. For the Blade Battery alone, hundreds of tests are conducted. These seemingly "clumsy" investments are precisely BYD's obsession with safety and quality—there are no shortcuts to quality, and safety permits no luck.

Market vote: the "real money" of tens of millions of users is the hardest endorsement of quality

Strict quality control ultimately settles into a vote of trust cast by the market with "real money." As of now, BYD's cumulative sales have exceeded 17.8 million vehicles, and nearly one quarter of new car sales each year come from additional purchases or trade-ins by existing owners. The firm choice of tens of millions of users is precisely the most powerful word-of-mouth endorsement of BYD's safety and quality. For them, sitting in a BYD means choosing a complete set of layered, escalating safety protection from the laboratory to the real world. This is the reason BYD is worthy of trust.