# Maextro S800

The Maextro S800 (Chinese: 尊界S800; pinyin: Zūnjiè S800) is a battery electric full-size ultra-luxury sedan manufactured by JAC Group under the Maextro brand, a collaboration with Huawei's HIMA multi-brand automotive alliance. It is positioned as the flagship vehicle of HIMA.

## Overview

On November 26, 2024, Maextro S800 was initially unveiled at a Huawei's Mate brand ceremony by Chairman of Huawei Consumer BG and Chairman of Intelligent Automotive Solutions BU Yu Chengdong (Richard Yu) and Chairman of JAC Group Xiang Xingchu, where pre-orders were opened in China. The vehicle on February 20, 2025 at the Maextro brand technology event focused on showcasing new technologies Huawei developed for the vehicle. Officially released are expected to begin later in the year in May.
The S800 is the first model jointly developed by Huawei and JAC Group. During the cooperation between the two parties, JAC stated that it committed its top-quality resources to Maextro and promote it as the top project. The Maextro S800 is built on the second-generation Tuling platform, marketed as Tuling Longxing (Chinese: 途灵龙行; lit. 'dragon travel'), a chassis architecture that has undergone five years of development, which incorporates advanced capabilities in intelligent driving and cockpit integration. The platform is intended to support sedans, SUVs and minivans with a gross weight of 3-3.8 tons with 2-4 motor powertrains with outputs between 480–1,300 hp (360–970 kW; 490–1,320 PS).
The model introduces the "Zhizun New Luxury" design language, and adheres to a design standard dubbed as "8S", which has consists of the criteria of super cruise, maneuverability, information perception, privacy, satellite network connectivity, AI assistance, active protection, and reliability.
The exterior features two-tone paint, stationary hubcaps, and elements such as vertical and horizontal headlights with starry elements crafted with crystal and metallic finishes. These starry elements can also be found on its door handles, and interior ceiling. Maextro claims the S800's body shape follows the golden ratio. The interior employs natural materials, some of which were claimed to be processed through over 100 steps for precision craftsmanship.

### Technologies

The S800 is developed to meet L3 advanced driver assistance standards by utilizing Huawei’s ADS advanced intelligent driving assistance system. The ADS introduces advanced parking features such as automatic parking, automatic summoning, and customizable parking preferences. Its 32-sensor suite features four of Huawei's proprietary 192-line LiDAR sensors, which Huawei claims increases perception distance by 60% in low-visibility weather conditions, reducing the system's reaction time by 40%. The use of deep learning technology by the system is claimed to improve recognition of road environments, enabling more accurate and responsive decision-making. The system also benefits from Huawei's Instinct Safety Network and extensive training data, updated every five days, with cloud computing power reaching 7.5E FLOPS.
The S800 has an active suspension and rear-wheel steering with an angle of up to 16 degrees. It has the Huawei ADS road perception system, which uses the ADAS sensor suite to detect upcoming slippery and bumpy road conditions and adjust steering, suspension, and torque distribution accordingly. It has Huawei's Xmotion body control system, which allows the active suspension to react to bumps in advance, and reduces body roll, lift, and dive in conjunction with the rear-wheel steering. The rear-wheel steering system allows for a 5.05 m (16.6 ft) turning radius, or 3.8 m (12 ft) in a special mode; it also allows for crab walking at 16 degrees. It has an adaptive headlight system that follows the direction of the road, and can highlight road users such as pedestrians using the high beams.
The vehicle can detect an incoming collision using the ADAS system, and will prepare the vehicle by adjusting the body posture, seating position, tension the seatbelts, close the windows, and unlock the doors. The S800 debuts the Huawei Xinghe vehicle connectivity system, which can switch networks and preload maps based on predicted signal strength, and features a vehicle-mounted satellite communication system that extends network signals up to 30 meters beyond the vehicle.

## Powertrain

The S800 is available with either a dual or triple-motor drivetrain, with power supplied by either purely from a battery, or supplemented by a range extender petrol engine. The battery for all versions have a NMC cathode chemistry and are supplied by CATL, and all motors in the drivetrain are supplied by Huawei.
The range extender has a 1.5-liter turbocharged petrol engine which is not mechanically connected to the wheels. It has a 63.25 kWh battery pack and 800V electrical architecture capable of 6C DC charging at up to 390kW, allowing for a 10-80% charge time of 10.5 minutes and achieving an electric-only CLTC range rating of 272–371 km (169–231 mi) depending on the model. All configurations have a 160 kW (215 hp; 218 PS) front motor. The EREV-exclusive dual motor models have a single 230 kW (308 hp; 313 PS) rear motor, while triple motor models have a 237.5 kW (318 hp; 323 PS) motor individually powering each rear wheel. EV models are only available with the triple motor powertrain.
Drivetrain :
| Model | Battery | Power output | Power output | Power output | Petrol engine | Petrol engine | Range | Top speed |
| Model | Battery | Front | Rear | Total | Type | Power | Range | Top speed |
| Dual motor EREV | 63.252 kWh NMC CATL | YS210XYA03 160 kW (215 hp; 218 PS) | 230 kW (308 hp; 313 PS) | 390 kW (523 hp; 530 PS) | 1.5L turbo | 115 kW (154 hp; 156 PS) | 371 km (231 mi) | 200 km/h (124 mph) |
| Triple motor EREV | 63.252 kWh NMC CATL | YS210XYA03 160 kW (215 hp; 218 PS) | 2x TZ210XYF01 2x 237.5 kW (318 hp; 323 PS) | 635 kW (852 hp; 863 PS) | 1.5L turbo | 115 kW (154 hp; 156 PS) | 272 km (169 mi) | 200 km/h (124 mph) |
| Triple motor BEV | | YS210XYA03 160 kW (215 hp; 218 PS) | 2x TZ210XYF01 2x 237.5 kW (318 hp; 323 PS) | 635 kW (852 hp; 863 PS) | – | – | | 210 km/h (130 mph) |

## Controversy

At Maextro's brand technology event on February 20, 2025, a comparison test video was shown, featuring the Maextro S800 and the Mercedes-Maybach S680 in -20°C extreme cold conditions. The video demonstrated the Maextro S800's stable performance, while the Maybach S680 experienced loss of control.
On February 24, a user on Douyin, claiming to be the owner of the very Maybach S680 posted a video accusing Maextro of using his vehicle for "violent driving and testing" without notification or authorization, resulting in damage to the front of the car and deformation of the wheel hubs. The car owner displayed the vehicle's GPS tracking and photos of the damage, questioning Maextro's alleged concealment and demanding compensation for vehicle repair costs.
On the evening of the 25th, JAC Group issued a statement asserting that the test data was authentic and reliable, and that the test vehicle was obtained through formal third-party rental channels, with the vehicle's purpose clearly stated. JAC Group expressed regret for the inconvenience caused to relevant parties and stated their willingness to actively communicate and negotiate a resolution. On the 28th, Maextro's legal department released a statement claiming that a large number of online accounts were maliciously fabricating rumors, and that evidence had been collected and reported. Maextro also issued a reward notice with a maximum of 5 million yuan, soliciting clues related to malicious smear campaigns targeting Maextro.
On March 11, Harmony Intelligent Mobility Alliance's legal department announced via Sina Weibo that it had filed a lawsuit against social media influencer 我是大彬同学, accusing the influencer of exaggerating misinformation and harming the public perception of the Harmony Intelligent Mobility Alliance brand and its products. On March 12, Maextro's legal team stated on Weibo that it had initiated a civil lawsuit against influencer 赛车星冰乐, accusing the latter of repeatedly posting defamatory remarks about the S800 through multiple affiliated accounts and demanded 1 million yuan in compensation. Subsequently, 赛车星冰乐 announced a countersuit against Maextro for falsely claiming he operated affiliated accounts to spread malicious information, harming his reputation and causing emotional distress, and requested 2.5 million yuan in compensation.