
The engine of the Dongfeng MX6 is an inline-four engine jointly developed by Nissan and Renault. The engine model used in the Dongfeng MX6 is the MR20DE, with a maximum horsepower of 144 hp, a maximum power output of 106 KW, a maximum power speed of 5200 rpm, and a peak torque of 198 N.m. For daily maintenance of the Dongfeng MX6 engine, the following methods can be used: Use lubricating oil of appropriate quality grade. For gasoline engines, SD--SF grade gasoline engine oil should be selected based on the additional devices of the intake and exhaust systems and usage conditions. For diesel engines, CB--CD grade diesel engine oil should be selected according to mechanical load, with the selection standard not lower than the requirements specified by the manufacturer. Regularly change the engine oil and filter. The quality of any grade of lubricating oil will change during use. After a certain mileage, the performance deteriorates, which can cause various problems for the engine. To avoid failures, change the oil regularly based on usage conditions and keep the oil level moderate. When the oil passes through the fine pores of the filter, solid particles and viscous substances in the oil accumulate in the filter. If the filter is clogged and the oil cannot pass through the filter element, it may burst the filter element or open the safety valve, allowing the oil to bypass through the bypass valve and bring contaminants back to the lubrication area, accelerating engine wear and increasing internal pollution. Regularly clean the crankcase. During engine operation, high-pressure unburned gases, acids, moisture, sulfur, and nitrogen oxides from the combustion chamber enter the crankcase through the gap between the piston rings and cylinder walls, mixing with metal powder from component wear to form sludge. When the amount is small, it remains suspended in the oil; when large, it precipitates out of the oil, clogging the filter and oil passages, making engine lubrication difficult and causing wear. Regularly use a radiator cleaner to clean the radiator. Removing rust and scale not only ensures the engine operates normally but also extends the overall lifespan of the radiator and engine.

I've driven the Dongfeng MX6 a few times, which is equipped with Nissan's QR25 2.5L naturally aspirated engine. This engine is quite famous, delivering 135 kW of power and a maximum torque of 227 Nm. It feels quite steady to drive. The acceleration isn't particularly fast, but it's responsive at low to medium RPMs, making overtaking in the city effortless, and it can easily cruise at 120 km/h on the highway. In terms of fuel efficiency, my actual test showed an average fuel consumption of 8 to 10 liters per 100 km, depending on driving conditions—higher in traffic jams but can drop to 7 liters on long trips. As a platform-sharing model with the Nissan X-Trail, this engine is reliable and durable, rarely encountering issues, and maintenance costs are affordable—just regular oil changes every 5,000 km, which doesn't cost much. If you prioritize smooth and quiet operation, this engine is almost silent at idle, making it ideal for daily commutes. A friend of mine has driven this car for 100,000 km, and the engine is still original with no repairs needed.

When I was selecting a car, I did thorough research. The Dongfeng MX6 is equipped with Nissan's QR25 series 2.5L engine, model code QR25DE, which delivers well-balanced power output. The 135 kW power is sufficient, providing smooth linear acceleration without any jerking. It utilizes multi-point fuel injection technology, and although it's not turbocharged, it offers a wide torque distribution, making it responsive when starting at traffic lights in the city. Fuel consumption is around 9 to 11 liters in urban driving and 6.5 to 8 liters on highways, depending on driving habits—I found that gentle driving can save some fuel. The engine noise control is excellent, keeping the cabin very quiet at idle, and when paired with the CVT transmission, the overall efficiency is high. This engine is shared with the X-Trail, ensuring high parts compatibility and easy maintenance.

When driving the MX6, I noticed its engine is Nissan's 2.5L naturally aspirated model with moderate displacement. It's very handy for daily grocery runs or picking up kids, offering sufficient power without high fuel consumption. The car performs smoothly in urban driving conditions, with brisk acceleration and no sluggishness. Average fuel consumption is around 10L/100km, dropping to just over 7L/100km on highway long-distance trips, making it quite economical. The engine demonstrates strong reliability - after several years of use, it hasn't required any major repairs beyond regular maintenance like oil and filter changes.


