Overview & Design Features
The Chery SQRD4G20 is an inline four-cylinder gasoline engine produced by the Chinese automaker Chery Automobile. Primarily known for its application in various Chery models from the mid-2010s, this naturally aspirated 2.0-liter (1971 cc) powerplant represented a workhorse in the manufacturer’s lineup, balancing performance with cost-effectiveness. It served as a key powertrain option for markets prioritizing durability and established technology, rather than cutting-edge forced induction.
Engineered with a robust cast iron cylinder block and an aluminum alloy cylinder head, the SQRD4G20 utilizes a Dual Overhead Camshaft (DOHC) valvetrain system, incorporating 16 valves (four per cylinder). A key technological feature is its Dual Variable Valve Timing (DVVT) system, which optimizes valve lift and duration on both intake and exhaust camshafts across the RPM range. This allows for improved volumetric efficiency, enhancing both fuel economy and power output. Fuel delivery is managed by a multi-point injection (MPI) system, a proven technology known for its reliability and simpler maintenance compared to direct injection systems.
This specific engine variant, the SQRD4G20, was prominently deployed in several Chery vehicles. Its primary applications include the Chery Tiggo 3 (later models), Chery Tiggo 5, and the Chery Arrizo 7 sedan. These vehicles utilized the engine across various trim levels, typically paired with manual or continuously variable transmissions (CVT) to cater to different driving preferences and market demands during its production run from approximately 2013 to 2018, though specific market availability may vary.
Technical Specifications
| Specification | Value |
|---|---|
| Displacement (cc) | 1971 |
| Max Power (hp (kW) @ RPM) | 139 (102) @ 5750 |
| Max Torque (Nm (kg*m) @ RPM) | 182 (18.6) @ 4500 |
| Fuel Type | Gasoline (Unleaded 92 RON minimum) |
| Fuel Consumption (l/100 km) | Approximately 8.5 (combined cycle, vehicle dependent) |
| Engine Type | Inline 4-cylinder, Naturally Aspirated |
| Compression Ratio | 10.0:1 |
| Cylinder Bore (mm) | 83 |
| Piston Stroke (mm) | 91.9 |
| Valvetrain | DOHC with DVVT |
| Valves per Cylinder | 4 |
| Additional Info | Multi-Point Injection (MPI) |
Common Problems & Reliability
The Chery SQRD4G20 engine generally demonstrates reasonable reliability for a naturally aspirated unit of its era. However, certain common issues may arise, particularly in higher mileage examples. One frequent concern involves the ignition coils, which can fail, leading to misfires and a noticeable loss of power. Symptoms typically include rough idling, hesitation under acceleration, and illumination of the check engine light. Another prevalent issue pertains to oil leaks, often originating from the valve cover gasket, oil pan gasket, or crankshaft/camshaft seals as rubber components age and harden. Regular inspection for oil seepage is recommended.
Furthermore, like many engines with a timing chain, the SQRD4G20’s timing chain and tensioner components can experience wear and stretch over extended mileage. This may manifest as rattling noises from the engine front, especially during cold starts, and can eventually lead to incorrect valve timing if left unaddressed. Timely replacement is crucial to prevent more severe engine damage. With proper and diligent maintenance, the Chery SQRD4G20 engine can realistically achieve a service life of 200,000 to 250,000 kilometers before a major overhaul or significant repairs are typically required.
Maintenance Tips & Service Schedule
- Engine Oil & Filter: Change every 7,500 to 10,000 kilometers or every 6-12 months, whichever comes first. Recommended oil viscosity is 5W-30 or 5W-40, meeting API SN or SP specifications. Using high-quality synthetic or semi-synthetic oil is advised to protect internal components.
- Spark Plugs: Replace every 40,000 to 60,000 kilometers. Use iridium-tipped spark plugs as specified by the manufacturer for optimal performance and longevity.
- Air Filter: Inspect at every oil change and replace every 20,000 to 30,000 kilometers or more frequently in dusty environments.
- Fuel Filter: Replace every 40,000 to 60,000 kilometers to ensure clean fuel delivery and protect the fuel system.
- Coolant Flush: Perform a coolant flush and refill every 3-5 years or 60,000 to 80,000 kilometers, using a compatible long-life ethylene glycol-based coolant.
- Timing Chain: The timing chain is generally designed for the life of the engine, but inspections for noise or excessive slack are recommended after 150,000 kilometers. Replacement should be considered if symptoms of wear are present.
- Accessory Belts: Inspect serpentine belts for cracks or wear every 40,000 kilometers and replace if necessary, typically every 80,000 to 100,000 kilometers.
Conclusion
The Chery SQRD4G20 engine stands as a dependable, straightforward choice for a used vehicle buyer seeking a practical and relatively simple powertrain. Its naturally aspirated, MPI design contributes to its overall robustness and ease of maintenance compared to more complex direct-injection or turbocharged engines. While some common issues like ignition coil failures and oil leaks may arise with age and mileage, these are generally manageable and well-understood by technicians. With a documented service history, adherence to recommended maintenance schedules, and attention to potential wear items, a vehicle equipped with the Chery SQRD4G20 can offer a reliable and economical ownership experience, making it a safe choice for budget-conscious buyers.