Why is the Changan Oshan X5 fuel-consuming?

[AliceAnn]

Changan Oshan X5 is actually not fuel-consuming, with a real fuel consumption of 6-8.6L/100km, which is among the top levels for an SUV. Below is an introduction to the Oshan X5: Body Appearance: The Changan Oshan X5 adopts a dynamic plastic light design, featuring a new plastic light design aesthetic that shapes the body with light and hides strength with shadows, creating the most exciting flow of light and shadow. It boasts a rare low and wide body in its class, with a golden ratio of 0.606, presenting a unified flow of light when stationary and an exciting light effect when in motion. Power: The Changan Oshan X5 is equipped with the Blue Whale NE1.5T engine, the only one in its class with a dual-outlet cylinder head integrated exhaust manifold + dual-scroll electronically controlled turbocharger, delivering a maximum power of 132kW and a maximum torque of 300N·m, with a strong horsepower of 180. It is also paired with a wet 7DCT automatic transmission.

[DelKevin]

I just bought a Changan Oshan X5 a few months ago and feel the fuel consumption is indeed a bit high, which is closely related to my driving habits. In city traffic jams, I can't help but frequently accelerate hard and then brake suddenly, burning extra fuel with every start. I also noticed the tire pressure is often too low—the standard is 2.5 bar, but my car often runs below 2.0, increasing rolling resistance and causing fuel consumption to rise. The spark plugs have also aged, leading to inefficient ignition and incomplete fuel combustion. When the air filter gets too dirty, the engine doesn't get enough airflow, wasting gasoline. After regular maintenance, replacing the filter, and adjusting the tire pressure, the fuel consumption dropped a bit. I suggest driving slower and steadier, avoiding rushing during peak hours in the city—this way, the car lasts longer and saves fuel costs.

[Eli]

After years of car repair, I often encounter complaints from Auchan X5 owners about excessive fuel consumption. The main issues likely lie in the engine system. For example, carbon buildup in the turbocharger can cause it to seize and become inflexible, reducing fuel efficiency by half. Cleaning or replacement is necessary to restore normal operation. Wear in the transmission system or loose bearings can lower power transfer efficiency, wasting fuel. The ECU control module malfunctioning and causing excessive fuel injection should be checked first; use diagnostic equipment to scan for error codes to confirm. Not changing the engine oil on time can lead to thickening, increasing engine burden. It's recommended to have a check-up every 5,000 kilometers, focusing on whether the oxygen sensor is malfunctioning—if exhaust monitoring is out of control, fuel consumption will skyrocket. Daily driving habits like avoiding overloading or prolonged idling can also help alleviate the issue.

[DeRiver]

I feel the fuel consumption of my Oshan X5 is too high during my daily commute, especially when stuck in traffic. Slow speeds and frequent starts make the fuel gauge drop rapidly, and turning the AC to strong cooling also consumes more fuel. Keeping tire pressure low at 1.5mm makes driving more strenuous, while maintaining the standard 2.5mm saves a lot. Reducing window usage or turning off unnecessary electrical devices can lighten the load. Changing aggressive driving habits and maintaining a steady speed on highways works very well.

[McHannah]

From car enthusiasts' discussions, the high fuel consumption of the Oshan X5 may be related to its design. The heavier body frame, while sturdy, results in slower acceleration and increased fuel usage. Poor aerodynamics lead to high wind resistance, creating strong drag at high speeds and causing the fuel gauge to drop rapidly. The ECU's default tuning leans towards performance at the expense of economy, leading to excessive fuel injection. Insufficient optimization of gear ratios causes jerky gear shifts, which also wastes fuel. It is recommended to upgrade the ECU software to reset fuel parameters or check the air filter to ensure smooth airflow. Avoid loading heavy items on the roof to prevent additional drag and fuel consumption.

[CadenDella]

Comprehensive user experience of Changan Oshan X5 shows increased fuel consumption due to environmental factors. Cold weather requires longer warm-up periods consuming more fuel, while summer AC usage significantly drains power. Hill climbing or overloading demands extra engine effort causing fuel consumption to surge. Uneven tire wear increases rolling friction wasting fuel. Regular maintenance like spark plug replacement and fuel system cleaning can efficiently improve performance with simple yet effective measures. Adjusting driving habits such as gentle acceleration, minimizing hard braking, maintaining around 2000 RPM for steady-speed driving yields good results, and avoiding unnecessary idling helps too.