SQR484F Engine

SQR484F 2.0 (139 hp): Experiences, issues, fuel consumption and buying used

The engine with the code SQR484F is the “heart” of many larger Chery models, and it is especially well known to owners of the Chery Tiggo 5 SUV. It is a 2.0‑liter petrol engine from the ACTECO series, which the Chinese manufacturer developed in cooperation with the Austrian company AVL. This is not a latest‑generation engine packed with delicate electronics, but a representative of the “old school” of naturally aspirated engines.

For drivers considering buying a vehicle with this power unit, the key questions are always the same: can Chinese engineering match European reliability standards, how much fuel does this engine actually use in a heavy body, and is maintenance exotic or routine. In the text below we analyze every bolt of this engine.

Key points in short (TL;DR)

• Simple design: Naturally aspirated engine without a turbo and without complex injection systems, which makes maintenance cheaper.
• Fuel consumption: Expect high fuel consumption, especially in city driving and in combination with the automatic transmission.
• LPG (autogas): An excellent candidate for LPG installation, which is almost mandatory for economical driving.
• Performance: The engine is somewhat “lazy” for the weight of the Tiggo 5, as it lacks low‑end torque.
• Sensitive electronics: Sensors (crankshaft, camshaft, oxygen sensors) tend to cause small but irritating problems.
• Transmission: The automatic version is actually a CVT that requires regular oil changes in order to last.

Contents

• Technical specifications
• Reliability and maintenance
• Specific parts (costs)
• Fuel consumption and performance
• Additional options and modifications
• Transmission
• Buying used and conclusion

Technical specifications

Specification	Value
Engine code	SQR484F
Displacement	1971 cc (2.0 L)
Power	102 kW (139 hp) @ 5750 rpm
Torque	182 Nm @ 4300-4500 rpm
Fuel type	Petrol (Gasoline)
Aspiration	Naturally aspirated
Injection	MPI (Multi-Point Injection)
Number of cylinders / valves	4 / 16 (DOHC)
Emission standard	Euro 5 (depends on market and model year)

Reliability and maintenance

Timing belt or chain?

The SQR484F engine uses a timing belt to drive the camshafts. This is important to know because many drivers mistakenly assume that all Asian 2.0 engines use a chain. The system is relatively simple, but it requires strict adherence to replacement intervals.

Most common failures

Although the mechanical parts (pistons, block, head) are quite robust, it is the engine peripherals that give owners headaches:

• Sensors: Problems with the crankshaft and camshaft position sensors are common, as well as with oxygen sensors (lambda sensors). Symptoms include stalling while driving, hard starting or the “Check Engine” light coming on.
• Thermostat and cooling system: The thermostat housing is prone to cracking or leaking, which can lead to overheating. Preventive inspection of hoses and clamps is recommended.
• Valve cover gasket: Oil leaks at the valve cover gasket are common after 100,000 km. Oil can get into the spark plug wells and cause misfires.
• Engine mounts: The rubber mounts are often of lower quality and wear out faster, which results in increased vibrations in the cabin at idle.

Service intervals

The major service (replacement of timing belt, tensioner, water pump) should be done every 60,000 to 80,000 km or every 5 years, whichever comes first. Do not risk extending this interval because a broken belt will cause catastrophic engine damage (piston-to-valve contact).

The minor service is recommended every 10,000 km, up to a maximum of 15,000 km, depending on operating conditions.

Oil: quantity and consumption

The oil pan holds approximately 4.5 liters of oil. The recommended viscosity is usually 5W-30 or 5W-40 (synthetic), depending on climate conditions. As for oil consumption, this engine is within normal limits. A healthy unit should not consume more than 0.5 liters between two services. If consumption exceeds 1 liter per 10,000 km, it usually indicates that the valve stem seals have hardened (which happens at higher mileage) or that there is a leak at some oil seal.

Spark plugs

Since this is a petrol engine, spark plugs are a consumable item. Standard nickel/copper plugs are replaced every 30,000 km. If you use iridium plugs (which is recommended for smoother operation), the interval extends to 60,000–80,000 km. Dirty spark plugs drastically increase fuel consumption on this engine.

Specific parts (costs)

Flywheel and clutch

Versions with a manual gearbox in the Tiggo 5 model usually use a solid flywheel (single‑mass), which is great news for the owner’s budget because there is no expensive dual‑mass flywheel to replace. Automatic (CVT) versions do not have a classic flywheel and clutch, but use a torque converter instead.

Fuel injection system

The SQR484F uses conventional MPI (Multi-Point Injection) into the intake manifold. This is a low‑pressure system, which means that the injectors are very durable, inexpensive to clean and not as sensitive to fuel quality as in direct injection (GDI) systems. Injector failures are rare.

Turbo, DPF, EGR, AdBlue

• Turbo: The engine does not have a turbocharger. This means less power, but also one very expensive component less to maintain.
• DPF and AdBlue: As a petrol engine, it does not have a DPF filter and does not use AdBlue fluid.
• EGR valve: There is an exhaust gas recirculation system. The EGR valve can get clogged from city driving, which causes rough idling, but this is usually solved by cleaning rather than replacement.

Fuel consumption and performance

Real‑world city consumption

This is where we come to the biggest drawback of this engine. The Tiggo 5 is a heavy car (over 1.5 tons), and the engine is naturally aspirated with only 182 Nm of torque. To get the car moving, the engine has to rev.

• City driving: Expect 11 to 13 l/100 km of petrol. In winter or in heavy traffic with the automatic transmission, that figure easily goes up to 14 liters.
• Open road: With moderate driving (80–90 km/h) it is possible to get down to about 7.5–8.5 l/100 km.

Is the engine “lazy”?

Yes, objectively it is. The 182 Nm of torque is available only at a high 4300 rpm. This means that when overtaking or driving uphill you have to shift down one or two gears and press the accelerator to the floor. In combination with the CVT, this creates a lot of noise in the cabin before the car actually starts to accelerate.

Behavior on the motorway

At 130 km/h, the engine in fifth gear (manual gearbox) runs at quite high revs, often around or above 3500–3800 rpm. This results in increased noise and fuel consumption of around 9–10 l/100 km on the motorway. The CVT can keep the revs somewhat lower when cruising, which slightly improves comfort.

Additional options and modifications

LPG installation (autogas)

This is an ideal engine for LPG conversion. Thanks to MPI injection, installation is simple, cheaper (standard sequential systems) and the engine handles LPG very well. Given the high petrol consumption, the investment in LPG pays off very quickly. A system with OBD connection is recommended for more precise mixture control. The intake manifold is plastic, so a quality system is essential to avoid backfires.

Remapping (Stage 1)

On naturally aspirated petrol engines, remapping makes almost no sense. The gain would be negligible (maybe 5–8 hp and a few Nm), which you will not feel in a heavy SUV. It is better to invest that money in quality maintenance or fuel.

Transmission

Types of gearboxes

With the SQR484F in the Tiggo 5 there are two options:

1. Manual gearbox (5‑speed): A classic, robust gearbox.
2. Automatic gearbox (CVT): Often the QR019CHA model. This is not a conventional automatic with fixed gears, but a continuously variable transmission.

Transmission issues and maintenance

Manual gearbox: Very reliable. Failures are rare and mostly come down to clutch wear. Clutch replacement is average in price (depends on the market, but is not overly expensive).

CVT (automatic): This is where you need to be careful. CVT gearboxes are sensitive to overheating (long uphill drives, towing a trailer) and to old oil. The most common symptoms of failure are jerking when moving off, whining noises from the gearbox or delayed response. CVT repairs are very expensive.

Transmission service:
On the manual gearbox, the oil is changed preventively every 60,000–80,000 km.
On the CVT, oil and filter changes are MANDATORY every 40,000 to 50,000 km. If you are buying a used car with a CVT and there is no proof of oil changes, it is a major risk.

Buying used and conclusion

What to check before buying?

• Engine noise: Listen to a cold start. Any knocking or rattling may indicate problems with the valve lifters or the variable cam pulley (if the model has it, depending on the year).
• Transmission operation (CVT): Shift into D and R. The response must be immediate, without a strong jolt. Acceleration should be linear, without “surging”.
• Leaks: Be sure to inspect the engine from underneath and around the valve cover.
• Diagnostics: Check the lambda sensor readings. If they are “lazy”, fuel consumption will be huge.

Conclusion: The SQR484F engine in the Chery Tiggo 5 is a rational choice rather than an emotional one. It is intended for drivers who want a simple, spacious car and are ready to accept weaker performance and higher fuel consumption in exchange for cheaper maintenance. It is ideal for those who drive many kilometers on open roads (especially if they install LPG) or for calm family driving. If you are looking for sporty performance or aggressive overtaking, this engine is not for you.