What are the defects of the 15c4e car engine?
3 Answers
15c4e car engine's defect is insufficient torque in the mid-range RPM. The base 1.5T 6AT version is equipped with SAIC-GM's LFV direct-injection engine. After upgrading to China VI emission standards, its maximum power increased to 127kw, and peak torque rose to 275Nm (1750-4000 RPM). While the power level is not bad, it still falls within the standard range for small-displacement engines. Paired with a 6AT automatic transmission, the power is merely adequate. The high-end 2.0T 6-speed wet dual-clutch version features a 20L4E engine based on Buick's 2.0T direct-injection turbo technology, with a maximum power of 170kw and peak torque of 370Nm (2000-4000 RPM).
As a friend who drives frequently, I have to say there are quite a few common engine defects. Oil leakage is a major issue, often caused by aging gaskets or seals. If not addressed promptly, it can contaminate the engine compartment and even lead to part corrosion. Excessive fuel consumption is also common; clogged fuel injectors or air intake system leaks make the car guzzle gas and waste money. Starting difficulties are especially noticeable in winter, with worn spark plugs or an aging battery requiring multiple attempts to start the engine. Overheating is even more dangerous—cooling system failures, like a broken water pump, can cause engine seizure and unexpected breakdowns. Additionally, a noticeable lack of power, due to clogged air filters or turbocharger failure, affects acceleration performance. These defects impact the driving experience, so I recommend regular maintenance checks, changing the oil, and inspecting coolant levels to prevent minor issues from becoming major problems.
I think the most annoying engine defects are those unexpected minor issues. Like the buzzing noise I encountered when I first started driving—it turned out the timing belt was loose or the bearings were worn, and the sound was really irritating. Decreased fuel efficiency is also terrible; sensor failures like a faulty oxygen sensor can cause fuel consumption to skyrocket, forcing me to spend extra money on gas. Hard starts are common too, especially in cold weather when the battery is weak or the ignition coils are problematic, leading to delayed ignition. Leakage issues, such as coolant leaks, can corrode components and shorten their lifespan. Additionally, when the engine overheating warning light comes on, I have to stop and check immediately, or it could cause internal damage. Knowing a bit about maintenance can help avoid these problems—like replacing spark plugs or checking belts—which can save a lot of hassle.
