SQRE4T15 Engine

1.5 Turbo (SQRE4T15) Chery Tiggo – Experiences, problems, fuel consumption and used car buying guide

Key points (TL;DR)

• Reliability: Generally a robust engine with proven technology, developed in cooperation with Austrian company AVL.
• Timing drive: Uses a chain, which reduces regular maintenance costs, but requires inspection after 150,000 km.
• LPG: Thanks to the MPI (Multi-Point Injection) fuel injection system, this is an ideal engine for LPG conversion.
• Performance: Although it has 152 hp, the torque of 205 Nm is modest for the weight of an SUV, so the engine feels sluggish before the turbo kicks in.
• Gearbox: Automatic transmissions (dry-clutch DCT) can be jerky in city driving and require some getting used to.
• Recommendation: A good choice for drivers who want simpler petrol maintenance and plan to run on LPG, and are not focused on sporty performance.

Contents

• Introduction: About the SQRE4T15 engine
• Technical specifications
• Reliability and maintenance
• Specific parts and costs
• Fuel consumption and performance
• Additional options and modifications (LPG & tuning)
• Gearbox: Manual and automatic
• Buying used and conclusion

Introduction: About the SQRE4T15 engine

The engine with the code SQRE4T15 represents one of the turning points for the Chinese manufacturer Chery. It is a unit from their "Acteco" family, developed with significant help from renowned European engineering companies, primarily Austrian AVL. It was installed in popular SUV models such as the Chery Tiggo 5 (facelift) and the first generation of the Chery Tiggo 7.

What makes this engine interesting on the used market is the combination of "old school" fuel injection with a modern turbocharger. The engineers’ goal was to achieve high thermal efficiency (over 37%), which was an impressive result at the time of launch. For drivers, this is an engine that offers a compromise between power and ease of maintenance, but it is not without its flaws, especially when paired with an automatic gearbox in a heavy body.

Technical specifications

Parameter	Value
Engine displacement	1498 cc (1.5 L)
Power	112 kW / 152 hp
Torque	205 Nm at 2000-4000 rpm
Engine code	SQRE4T15
Injection type	MPI (Indirect injection)
Charging	Turbocharger + intercooler
Number of cylinders / valves	4 / 16 (DOHC)

Reliability and maintenance

Does this engine have a timing belt or chain?

The SQRE4T15 engine uses a timing chain for valve timing. This is good news for owners because there is no fixed replacement interval as with a belt (e.g. at 60,000 km). The chain is designed to last as long as the engine, but in practice it should be thoroughly inspected (and replaced if necessary) between 150,000 and 200,000 km. Rattling at cold start is the first sign that the chain has stretched.

What are the most common failures on this engine?

Although mechanically robust, the engine suffers from several peripheral issues:

• Sensors: Problems with lambda sensors (O2 sensors) and air pressure sensors are common, which can trigger the "Check Engine" light and increase fuel consumption.
• Cooling system: The thermostat housing and plastic coolant junctions tend to weaken with age, causing coolant leaks. Regular visual checks of the antifreeze level are recommended.
• Vibrations: Engine mounts (especially the lower one, the so-called "dogbone") are not the most durable and can transmit unpleasant vibrations into the cabin already after 80,000 km.

At what mileage should the major service be done?

Since the engine has a chain, a classic "major service" is not done at fixed intervals as with belt-driven engines. However, the serpentine belt, tensioners and water pump should be inspected and replaced every 80,000 to 100,000 km or 5–6 years of age. Chain replacement is done only if needed (noise or diagnostic trouble codes related to cam/crank correlation).

How many liters of oil does this engine take and which grade is recommended?

The sump holds approximately 4.5 to 4.7 liters of oil (including the filter). The recommended grade is 5W-30 or 5W-40, with mandatory compliance with API SN or higher specification. High-quality synthetic oil is crucial for protecting the turbocharger. A minor service (oil and filter change) should be done at a maximum of 10,000 km or once a year.

Does it consume oil between services and what amount is considered normal?

This engine is not known as a heavy oil consumer. Consumption of up to 0.5 liters per 10,000 km is perfectly acceptable and is not considered a fault. If the engine consumes more than that (e.g. 1 liter), the problem usually lies in the PCV valve (oil separator) which gets clogged, or in the turbocharger seals, less often in the piston rings themselves.

At what mileage should the spark plugs be replaced?

Due to turbocharging, the spark plugs are under higher thermal load. Standard (nickel/copper) plugs should be replaced every 30,000 km. If you use iridium plugs (recommended for smoother operation), the replacement interval is extended to 60,000 to 80,000 km. Worn spark plugs can cause ignition coils to fail.

Specific parts (costs)

Does the engine have a dual-mass flywheel?

Yes. Versions with a manual gearbox and most versions with a DCT automatic gearbox use a dual-mass flywheel to neutralize vibrations and torque shocks. This is an expensive item (Price: Very expensive, depends on the market) and typically lasts around 150,000–180,000 km, depending on driving style.

What kind of injection system does it have and are the injectors problematic?

The engine uses an MPI (Multi-Point Injection) system, where fuel is injected into the intake manifold rather than directly into the cylinder. This is excellent news for owners because MPI injectors are cheaper, longer-lasting and more resistant to poorer fuel quality than GDI injectors. Also, this system prevents carbon buildup on intake valves, which is a common issue with more modern direct injection systems. Injectors rarely cause problems before 200,000 km.

Does the engine have a turbocharger and what is its lifespan?

The engine has a single Honeywell or similar water-cooled turbocharger. The turbo is generally reliable, but its lifespan depends directly on regular oil changes. The expected life is around 200,000 km. Symptoms of failure include whistling under acceleration, blue smoke from the exhaust, or a sudden loss of power (safe mode).

Does this model have a DPF filter or EGR valve?

As a petrol engine, it does not have a DPF filter. It does have a catalytic converter, which can fail if the car is driven with a faulty ignition system (e.g. bad coil). An EGR valve exists on some versions for emissions purposes, but on petrol engines it clogs much less often than on diesels and is not a critical maintenance point.

Does this engine use AdBlue?

No. AdBlue is used exclusively on newer-generation diesel engines. This engine does not use any additional exhaust gas treatment additives.

Fuel consumption and performance

What is the real-world fuel consumption in city driving?

Be prepared for higher figures. The Chery Tiggo 5 and 7 are heavy cars (over 1.5 tons), and the engine has a small displacement. In heavy city traffic, real-world consumption ranges from 10 to 12 liters per 100 km. In winter and on short trips, this figure can go up to 13 l/100 km, especially on versions with an automatic gearbox.

Is this engine “lazy” for the weight of the body it is installed in?

Yes and no. Power of 152 hp sounds sufficient, but the torque of 205 Nm is relatively low for a modern turbo engine in a heavy SUV (competitors often offer 250 Nm). The engine suffers from turbo lag at low revs (below 2000 rpm), so when setting off it can feel sluggish until the turbo spools up. It requires a more decisive push on the accelerator for overtaking.

How does the engine behave on the motorway and at what revs does it cruise at 130 km/h?

On the motorway it behaves decently once it gets up to speed. At 130 km/h in top gear the engine usually runs at around 3000 to 3200 rpm (depending on the gearbox). This is not too noisy, but fuel consumption increases due to the SUV’s aerodynamics (boxy shape) and is around 8.5–9.5 l/100 km.

Additional options and modifications

Is this engine suitable for LPG conversion?

Absolutely yes. This is one of the biggest advantages of this engine. Thanks to the MPI injection system, LPG installation is simple, inexpensive (standard sequential systems) and very reliable. There is no need for expensive direct-injection LPG systems that also consume petrol while running on gas. LPG drastically reduces running costs for this otherwise thirsty engine.

How far can this engine be safely “chipped” (Stage 1)?

The engine has power reserves, but the limiting factor is often the gearbox (especially the DCT automatic). A safe Stage 1 remap can raise power to about 170–175 hp and torque to about 240–250 Nm. Caution is advised with automatic gearboxes so that the increased torque does not shorten clutch life.

Gearbox

Which manual and automatic gearboxes are paired with this engine?

The following are most commonly paired with this engine:

• Manual: 6-speed gearbox (often Aisin or Getrag derivatives).
• Automatic: 6-speed DCT (Dual Clutch Transmission) with dual clutch. This is most often the Getrag 6DCT250 gearbox with dry clutches.

What are the most common failures of the manual and automatic gearboxes?

The manual gearbox is robust, failures are rare and mostly limited to the clutch kit as a wear item.
The DCT automatic is more problematic. Since it uses "dry" clutches, it is sensitive to overheating in stop-and-go traffic. Symptoms include jerking when setting off, hesitation when changing gears and metallic noises. Also, the mechatronics unit (the gearbox control module) can fail, which is an expensive repair (Depends on the market: Expensive).

What is the cost of clutch replacement?

A clutch kit for the manual gearbox is moderately priced. However, a clutch kit for the DCT gearbox is a very expensive job because it includes specific parts and a complicated calibration procedure after replacement.

At what mileage should the gearbox be serviced and the oil changed?

• Manual: Although many say the oil is "lifetime", it is recommended to change it at 80,000–100,000 km.
• DCT automatic: Oil change is mandatory every 60,000 km. Although the clutches are dry, the gearbox has oil for the gears and hydraulics which degrades. Neglecting this leads to rapid failure.

Buying used and conclusion

When buying a used Chery model with the SQRE4T15 engine, make sure to check the following:

1. Cold start: Listen for chain rattling in the first few seconds after start-up.
2. Gearbox operation (automatic): Warm up the car and drive it in traffic. If it jerks when setting off or hesitates when shifting from first to second, walk away from that example or be prepared to pay for clutch/mechatronics overhaul.
3. Turbo: Check for traces of oil around the turbocharger and on the intercooler hoses.
4. Diagnostics: Check lambda sensor parameters, as they are a common cause of fuel mixture issues.

Conclusion: The SQRE4T15 engine is a solid workhorse. It is not a sports engine and in heavy bodies it consumes more fuel than you would like, but it compensates with simple construction (MPI injection) which allows cheap LPG running. If you can choose, the manual gearbox is a safer and cheaper option to maintain than the DCT automatic. It is intended for drivers who want a spacious family SUV and are ready to accept compromises in performance in exchange for lower long-term maintenance costs.