Seamlessly Connects Buyers and Sellers：How GCAR Transforms the Used Car Market with Tencent RTC

Trust between buyers and sellers is the core of used car transactions. Leveraging the comprehensive real-time interactive capabilities provided by Tencent RTC, GCAR’s Charancha platform has significantly enhanced information transparency and immediacy, establishing South Korea’s first real-time e-commerce platform for used cars.

GCAR

GCAR wants to provide customers with used car information as well as secure and convenient reservation and purchase services through the Charancha platform. To this end, it strives to interact with sellers in real time through live streaming, so as to enhance the information transparency and build a trustworthy and reliable used car marketplace.

Challenges & Goals

In the rapidly evolving automotive industry, real-time communication is crucial for building trust and accelerating transactions. To create a more convenient, approachable, and trustworthy used car trading platform, GCAR hopes buyers can communicate with sellers in real time through live streaming and interactive features. However, truly achieving near in-person, ultra-low-latency real-time communication imposes extremely stringent requirements on the team’s technical capabilities and infrastructure.

● High technical barriers and complex maintenance: Building an in-house real-time communication and live streaming system not only has a high technical threshold but also requires continuous operational investment. Prolonged R&D cycles and sustained resource投入 translate into higher risks and costs.

● Latency and high-concurrency challenges: To ensure user experience, the system must deliver millisecond-level ultra-low latency and ultra-high-definition video quality so that buyers and sellers can discuss vehicle details in real time, build trust, and complete transactions. Meanwhile, during holidays and promotional events, Charancha must also handle traffic surges.

● Multi-platform adaptation: Charancha needs to develop and maintain multiple platforms such as iOS and Android simultaneously, which will undoubtedly consume substantial resources and impose significant cost pressure on the platform.

● Interactive feature development: Beyond basic audio and video capabilities, Charancha needs to build a wide range of interactive features such as likes, gifts, multi-guest. The entire development cycle could take up to half a year.

Why Tencent RTC?

To address these challenges, GCAR chose Tencent Cloud RTC’s one-stop solution, building a reliable, stable, and efficient real-time e-commerce platform for used cars on this foundation.

● Ultra-low latency, superior quality: Tencent RTC features industry-leading network transmission technology and global server node coverage, delivering end-to-end latency as low as 300ms. This enables GCAR users to enjoy an online real-time communication experience that is nearly as seamless as face-to-face interaction. At the same time, Tencent RTC supports 2K/4K ultra-high-definition video streams and offers intelligent bitrate adaptation, ensuring the best possible viewing experience. Its robust network infrastructure also allows Tencent RTC to easily handle traffic surges during promotional events.

● Comprehensive solution: Tencent RTC provides a one-stop solution covering streaming, transcoding, distribution, and playback, with built-in interactive features such as likes, gifts, real-time co-hosting, and virtual backgrounds. These rich live streaming capabilities significantly reduce GCAR’s integration workload and help accelerate feature rollout.

● Multi-platform support: Tencent RTC supports users on more than 20,000 types of devices and various platforms, including iOS, Android, Windows, macOS, web, Flutter, Electron, Unity, Unreal, and React Native.

● Cost control: The flexible pricing model allows GCAR to align infrastructure spending with actual business scale, ensuring efficient resource utilization.

Highlighted Benefits

Thanks to Tencent RTC’s comprehensive solutions and outstanding product performance, Charancha was able to go live rapidly across multiple ends and platforms in a very short time, fully meeting its customers’ needs for real-time online communication. Since its launch in 2021, Charancha has maintained rapid growth, achieving sales of 6.65 billion KRW in 2024—an 84% increase over the previous year. This strong growth is inseparable from the high-quality services provided by Tencent RTC, which enable Charancha to deliver the best possible online car-buying experience and truly build trust between buyers and sellers.

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