The 15S4C Engine: A Reliable Powerhouse for MG, Roewe, and Maxus Vehicles This high-performance 1.5L inline-four engine, developed by SAIC Motor, delivers a perfect balance of efficiency, durability, and smooth operation—making it a trusted choice across popular models such as the MG3, MG5, MG ZS GT, Roewe 350, and Roewe 360. Designed with advanced engineering principles, the 15S4C engine stands out in the compact car segment for its low fuel consumption, consistent power output, and robust mechanical design. Whether you're replacing an old unit or upgrading your vehicle’s performance, this engine offers a proven solution that meets modern driving demands. Key Features - Displacement: 1.5 liters - Maximum Power: 88 kW (120 hp) - Peak Torque: 150 Nm - Fuel Efficiency: As low as 5.5 L/100 km (officially certified) - Valve Train Design: Hydraulically supported ball rocker arms reduce friction and improve energy transfer - Engine Type: Complete assembly or long block (
Bare Engine) for professional installation - Application Range: Compatible with MG3, MG5, MG ZS GT, Roewe 350, Roewe 360, and other SAIC-built vehicles Detailed Description Engineered for reliability and optimized for real-world driving conditions, the 15S4C is more than just a standard internal combustion unit—it's a carefully calibrated system that prioritizes efficiency without sacrificing driveability. Its hydraulically supported ball rocker arm mechanism minimizes internal resistance, reducing parasitic losses and enhancing overall fuel economy. Compared to other 1.5L four-cylinder engines from domestic manufacturers, the 15S4C offers superior torque delivery and smoother idle characteristics, making it ideal for urban commuting and highway cruising alike. The engine also features a durable cast iron cylinder block, precision-machined aluminum alloy cylinder head, and a refined intake/exhaust system that ensures consistent airflow and reduced emissions. With a well-established track record in production vehicles like the 2017 MG3 1.5L automatic intelligent elite version, this engine has demonstrated long-term stability under various climates and usage patterns. Ideal Use Cases This engine is particularly suited for automotive repair shops, import parts suppliers, and DIY mechanics working on MG and Roewe models. It serves as an excellent replacement option for worn-out or damaged units, offering OEM-level quality at a competitive price point. Whether you’re restoring a classic MG3, maintaining a fleet vehicle, or upgrading performance components in a Roewe 360, the 15S4C provides a seamless fit with minimal modification required. Its compatibility with both manual and automatic transmission setups makes it versatile for different vehicle configurations. Customer Feedback Users consistently praise the 15S4C for its quiet operation, ease of installation, and reliable performance after extended use. Many report noticeable improvements in fuel economy compared to older engine variants, especially when paired with proper maintenance routines. Mechanics highlight its straightforward integration into existing drivetrains, citing fewer issues during reassembly and fewer error codes in diagnostic systems post-installation. Long-term owners note that the engine maintains consistent power output even after 100,000 kilometers of regular driving, reinforcing its reputation as a dependable workhorse. Frequently Asked Questions What vehicles are compatible with the 15S4C engine? It is primarily used in MG3, MG5, MG ZS GT, Roewe 350, and Roewe 360 models manufactured between 2016 and 2023. Always verify the exact model year and VIN before purchase. Is this engine suitable for high-mileage applications? Yes, the 15S4C has been tested extensively in heavy-duty environments and shows excellent wear resistance, particularly in city driving where frequent stop-and-go conditions are common. How does it compare to similar engines in terms of fuel economy? With an official fuel consumption rating of just 5.5 liters per 100 kilometers, the 15S4C outperforms many competitors in its class, thanks to its efficient valve train design and optimized combustion chamber geometry. Can I install this engine myself? While possible for experienced technicians, we recommend professional installation due to the need for precise alignment, sensor calibration, and ECU programming. Incorrect setup may result in poor performance or damage to the vehicle’s control systems.
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