On August 7, 2025, SAIC Buick, known as the "inventor of range extender," officially unveiled its fully in-house developed "Zhenlong" range extender system. This powertrain, built on the "Million-Class Xiaoyao Architecture," will debut on the upcoming Buick Zhijing L7 new energy smart luxury sedan. With four key performance indicators: a 302km pure electric range, a combined range of over 1,400km, 0-60 km acceleration in 5.9 seconds, and a combined fuel consumption of 0.5L/100km, it directly addresses the current technical pain points in the range extender market.
Buick's "Zhenlong" range extender system combines a 1.5T hybrid engine (maximum power of 115kW) with a 252kW rear-mounted electric motor. It boasts a 0-60 km acceleration time of 5.9 seconds, a combined fuel consumption of 0.5L/100km, peak torque exceeding 400Nm, and a top speed of 22,000rpm. The Autoneng 2.0 hybrid battery pack's 9C/315kW full-charge discharge and 7.8C/260kW low-charge discharge capabilities achieve a 0-60 sprint difference of less than 0.1 second between full and low-charge states, rivaling the performance of a 3.0T V6 gasoline engine.
The 40.2kWh lithium iron phosphate battery pack supports a CLTC pure electric range of 302km (the longest in its class), and paired with a 59L fuel tank, it achieves a combined range of over 1,400km. 130kW fast-charging technology allows for a 30%-80% charge in just 18 minutes, while the 6kW V2L external discharge function expands outdoor use.
The "Zhenlong" extended-range system utilizes Silentium static drive technology, achieving engine noise interference of less than 0.5dB (industry average 2dB) and steering wheel vibration acceleration of less than 0.04g (human perception threshold 0.1g), achieving "unnoticeable" NVH performance.
Developed with a goal of 3,700 full charge and discharge cycles, the battery's pure electric range degradation period can reach 43 years (calculated at an annual average of 15,000 kilometers), with battery safety standards far exceeding national standards.
As the first product of Buick's high-end new energy vehicle sub-brand, the Zhijing L7, a C-segment sedan based on the Xiaoyao architecture, measures 5,032 mm x 1,952 mm x 1,500 mm and has a 3,000 mm wheelbase. Highlights of its intelligent features include:
The world's first large-scale Momenta R6 flywheel ADAS model, equipped with LiDAR for map-free urban areas (NCA);
Qualcomm SA8775P cockpit chip, with 72TOPS computing power supporting multimodal interaction;
50-inch AR-HUD and 8-screen integrated design;
The Zhijing L7 targets the 300,000 RMB luxury sedan market. Its Xiaoyao architecture is scalable across the MPV, SUV, and sedan categories, supporting pure electric, plug-in hybrid, and extended-range powertrains. Buick officially announced that it will launch five Zhijing series models in the next eight months, and all domestic new energy vehicles will be based on this architecture starting in 2025. This technology launch is seen as a strategic correction for Buick's E-series pure electric vehicle market performance and a significant move by the traditional American brand into the high-end new energy vehicle market.
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