Is it true that older cars consume more fuel?
2 Answers
The level of fuel consumption is indeed related to the age of the vehicle, but factors such as road conditions also affect fuel consumption. Over time, even if the various parts of the vehicle are not damaged, they will age. The fuel system of the engine is one of the busiest systems, and the fuel injector, as a core component, will accumulate carbon deposits and experience aging of seals over time, leading to uncontrollable fuel injection and excessive fuel consumption. Additional information: Ways to reduce fuel consumption: 1. Avoid prolonged idling or low-speed driving. 2. Avoid overloading the vehicle and keeping the fuel tank full. 3. Avoid using high-viscosity engine oil. 4. Try to control speed with the accelerator rather than the brake.
I've been driving this car for almost twenty years, and I can definitely feel that the fuel consumption has increased significantly. When it was new, a full tank could easily cover over 500 kilometers, but now on the same route, I have to refuel before reaching 400 kilometers—it's noticeably thirstier. The main reasons seem to be worn piston rings in the engine, which over time have reduced sealing performance and lowered combustion efficiency; aging spark plugs that fail to ignite properly, leading to wasted fuel; and underinflated tires increasing rolling resistance, making acceleration more fuel-intensive. I stick to regular maintenance, changing the engine oil and air filter every six months and checking tire pressure monthly, which helps the old car regain some vigor and slightly reduces fuel consumption. Driving habits also play a big role—avoiding sudden braking and acceleration while maintaining a steady speed on highways can save a lot on fuel costs. In short, increased fuel consumption in older cars is common, but with careful maintenance, you can keep expenses under control.
