SQRD4G20 Engine

Chery 2.0 SQRD4G20 (122 HP) – Experiences, issues, fuel consumption and buying tips

Key points (TL;DR)

• Old-school mechanics: Naturally aspirated engine without a turbo means fewer expensive parts that can fail, but also more modest performance.
• Sluggishness: With 122 HP and 180 Nm in an SUV body (Tiggo 7), this engine is quite "lazy", especially on hills and when overtaking.
• Fuel consumption: Expect higher fuel consumption in the city, because the engine has to rev higher to move the heavy body.
• Suitable for LPG: Due to indirect injection, it is an ideal candidate for LPG installation to save money.
• The CVT gearbox is the critical point: It requires regular oil changes and a gentler driving style; it is not sporty-oriented.
• Maintenance: Parts prices are affordable, but availability may vary depending on the continent (depends on the market).

Contents

• Introduction and applications
• Technical specifications
• Reliability and maintenance
• Specific parts and injection system
• Fuel consumption, performance and "sluggishness"
• Additional options (LPG and remapping)
• Gearbox: CVT issues and maintenance
• Buying used and conclusion

Introduction: Why is the SQRD4G20 important?

The SQRD4G20 engine is a 2.0-liter naturally aspirated petrol unit that represents the basic, "budget" option in the first generation of the Chery Tiggo 7. While more modern competitors have switched to small turbo engines (such as the 1.5T that Chery also offers), this engine has been retained for markets that prefer simplicity, robustness and lower maintenance costs.

Its philosophy is clear: offer proven technology (based on older Japanese licenses, often Mitsubishi architecture that Chery has improved) to drivers who are not looking for sporty performance, but rather a means of transport that "just rolls" without too many complications. However, installing it in a relatively heavy SUV brings certain compromises that we will cover in detail.

Technical specifications

Specification	Value
Displacement	1971 cc (2.0 L)
Power	90 kW (122 HP)
Torque	180 Nm at 4000–4500 rpm
Engine code	SQRD4G20
Injection type	MPI (Multi-Point Injection) – Indirect
Aspiration	Naturally aspirated
Number of cylinders/valves	4 cylinders / 16 valves (DOHC)

Reliability and maintenance

Timing system: Belt or chain?

This engine, as a derivative of the older Chery ACTECO 2.0 engine series, most commonly uses a timing belt to drive the camshafts. This is important to know because it is not "maintenance-free" like a chain.

The major service is recommended every 60,000 to 80,000 km or every 4–5 years, whichever comes first. A snapped belt on this engine will cause piston-to-valve contact (interference engine), which means catastrophic damage. Therefore, as soon as you buy a used car, if you do not have written proof of replacement – replace the timing kit immediately. Parts prices are moderate (depends on the market).

Most common failures

The SQRD4G20 is mechanically robust, but it suffers from peripheral issues:

• Sensors: Oxygen sensors (O2 sensors) and the crankshaft position sensor often fail, which can cause the "Check Engine" light to come on, rough idle or hard starting.
• Thermostat and thermostat housing: They can leak or get stuck, which leads to poor cabin heating or engine overheating.
• Valve cover gasket: Oil leaks at the gasket are common after 100,000 km. A typical symptom is the smell of burning oil in the cabin.
• Engine mounts: Due to the vibrations of a larger-displacement four-cylinder, the rubber mounts can fail, transmitting vibrations to the chassis.

Oil and spark plugs

The oil pan of this engine holds about 4.5 to 5.0 liters of oil (always check on the dipstick while filling). The recommended viscosity is 5W-30 or 5W-40, depending on climate conditions. Fully synthetic oil is recommended for better protection of the variable valve timing (VVT) system.

As for oil consumption, this engine is not known as a big "oil burner" if the piston rings and valve stem seals are in good condition. Normal consumption is up to 0.3–0.5 liters per 10,000 km. If it consumes more than a liter between services, check the PCV valve or valve stem seals.

Spark plugs on this petrol engine should be replaced every 30,000 to 40,000 km if you use standard nickel-copper plugs. If you install iridium plugs, the interval extends to 60,000+ km.

Specific parts and costs

Injection system and turbo

Good news for your wallet: This engine does NOT have a turbocharger. That eliminates one of the most expensive failures on modern cars. There is no turbo that can start whining, no intercooler that can crack.

The injection system is MPI (Multi-Point Injection). The injectors are robust, cheap to clean and rarely cause problems. They are not as sensitive to fuel quality as GDI injectors. This is "bulletproof" technology.

Flywheel and emissions equipment

In combination with the CVT gearbox (which is standard with this engine in the Tiggo 7), the engine usually uses a solid flywheel or a very simple vibration damper, because the CVT gearbox "smooths out" shocks. A dual-mass flywheel (as in diesels) is not something you need to worry about here, which significantly reduces maintenance costs.

Emissions equipment:

• DPF: None (this is a petrol engine).
• AdBlue: None.
• EGR valve: Present. It can get dirty from city driving, but on petrol engines it is easier to clean and less likely to cause total failure than on diesels.
• Catalytic converter: Present, and it can fail if the engine burns oil or is driven with an incorrect mixture (faulty oxygen sensor).

Fuel consumption and performance

Is the engine "lazy"?

To be honest – Yes, it is. The Chery Tiggo 7 is a heavy car, and 122 horsepower and only 180 Nm of torque (available only at a high 4000 rpm) are simply not enough for dynamic driving.

In practice, this means you will have to press the accelerator pedal quite deep to get the car moving, especially uphill or with a full trunk. Overtaking on country roads requires planning and a good "run-up".

Real-world fuel consumption

The lack of power is paid for in fuel consumption. Since you have to "wring out" the engine:

• City driving: Expect between 10 and 12 l/100 km. In heavy traffic and in winter, this can go up to 13 liters.
• Open road (rural highways): Around 7–8 l/100 km.
• Motorway (130 km/h): Due to the CVT gearbox, the engine will run at slightly higher revs than you would expect from a 2.0 engine (around 3000–3500 rpm), and fuel consumption will be around 9–10 l/100 km because of the poor aerodynamics of the SUV body.

Additional options and modifications

LPG installation

This is the biggest advantage of this engine. Thanks to MPI injection and simple construction, the SQRD4G20 is excellent for conversion to LPG. Installation is straightforward, standard sequential systems work perfectly, and the savings are huge considering the high petrol consumption. It is recommended to install a valve lubrication system as a preventive measure, although the cylinder head is considered durable.

Remapping (Stage 1)

On naturally aspirated petrol engines, remapping makes virtually no sense. The gain would be maybe 5–8 HP, which you will not feel in real driving. Do not waste money on software tuning of this engine; it simply does not have a turbo whose boost pressure you could increase.

Gearbox: The Achilles' heel

In the Tiggo 7, this engine comes paired with a CVT (Continuously Variable Transmission). This is the area where you need to pay the most attention.

CVT reliability

Chery uses CVT gearboxes that are designed for comfort, not for racing. The most common problems are:

• Overheating: Prolonged high-speed motorway driving or aggressive city driving can overheat the transmission fluid, after which the gearbox goes into "safe mode" (loses power).
• Belt slippage: If the oil is not changed regularly, the metal belt inside the gearbox can start to slip, creating metal shavings that destroy the entire system.
• Failure symptoms: Whining that follows engine revs, jerking when setting off, delayed response to throttle input (greater than usual for a CVT).

Gearbox maintenance

Unlike manual gearboxes where the oil is changed rarely, on this CVT it is MANDATORY to change the transmission fluid and filter every 40,000 to a maximum of 60,000 km. If you skip this, the service life of the gearbox is drastically reduced. The cost of an oil change is not negligible, but it is ten times lower than a gearbox overhaul (depends on the market).

Buying used and conclusion

When buying a Chery Tiggo 7 with this engine, focus on:

1. Checking the CVT gearbox: The gearbox must operate smoothly, without jerks and strange noises, both when cold and when hot.
2. Service history: Has the transmission fluid been changed? Has the major service (timing belt) been done?
3. Oil leaks: Inspect the engine from underneath and around the valve cover.

Conclusion:
The SQRD4G20 engine is intended for calm drivers who want a spacious SUV but do not want the risk of failures associated with modern turbo diesels or GDI petrol engines. It is sluggish, it consumes a lot of petrol, but it is cheap to maintain and ideal if you plan to install LPG. If you can accept its modest performance and pay attention to regular CVT servicing, this engine can serve you for years with minimal repair costs.