Why does the Tanyue particulate filter consume more fuel?

[LeilaLynn]

Because the Tanyue particulate filter is prone to clogging, which leads to poor exhaust flow and consequently increased fuel consumption. Function of the particulate filter: The particulate filter can reduce the soot produced by diesel engines by more than 90%, and the captured particulate emissions are subsequently burned off during vehicle operation. Principle of the particulate filter: The diesel particulate filter is coated with metals such as platinum, rhodium, and palladium. The black smoke containing carbon particles emitted by the diesel engine enters the exhaust particulate filter through a dedicated pipeline. After passing through its densely arranged bag-type filter, the carbon soot particles are adsorbed onto the filter made of metal fiber felt. When the adsorption of particles reaches a certain level, the burner at the end automatically ignites and burns, turning the adsorbed carbon soot particles into harmless carbon dioxide that is then expelled.

[JulietteLee]

As a former owner who drove the Tayron for several years, I've personally observed that the particulate filter can lead to slightly higher fuel consumption, mainly due to a process called regeneration. While driving, carbon deposits accumulate inside the filter, prompting the system to automatically initiate regeneration by injecting extra fuel to heat up the exhaust pipe and burn off the soot. This additional fuel injection naturally increases costs. Moreover, the filter's placement in the exhaust pipe adds resistance, forcing the engine to work harder to maintain power, which slightly reduces efficiency—especially noticeable during city traffic jams or short trips. To mitigate this, I tried flooring the accelerator on highways to allow full regeneration, but overall fuel expenses still rise. The Tayron's tuning might make the filter operate more frequently, so regular check-ups at the 4S店 are advisable to prevent minor issues from escalating. Ultimately, this is a small environmental trade-off, and the fuel consumption increase isn't drastic—daily commutes remain manageable.

[Roman]

I think the fuel consumption issue with the particulate filter mainly comes down to the regeneration process. During vehicle design, the filter needs periodic cleaning of accumulated soot, so the system automatically burns a bit more fuel to raise temperatures, which increases the engine's fuel injection volume. Plus, being placed in the exhaust path, it creates some backpressure, making the engine work harder with slightly reduced efficiency. As someone who drives the Tayron daily for commuting, I've noticed the fuel gauge drops faster in stop-and-go traffic. After one long highway trip, the fuel consumption improved slightly, probably because regeneration completed. For daily use, try minimizing short trips and take more highway runs to keep it operating smoothly. Regular maintenance like changing the air filter might also help a bit. Overall, it's a minor issue, but worth the extra fuel cost for cleaner emissions. The Tayron handles well, so I can live with this fuel consumption trade-off.

[SanJace]

The particulate filter increases fuel consumption mainly due to its regeneration process. When the filter accumulates soot during driving, the system automatically injects additional fuel to heat up the exhaust and clear the soot, which naturally leads to extra fuel consumption. Additionally, the filter itself acts as an obstacle, requiring the engine to work harder to push exhaust through, slightly reducing efficiency. From practical experience, regeneration occurs more frequently during short trips or at low speeds, leading to higher fuel costs. As a driver, I always recommend maintaining a steady speed on highways to facilitate smooth regeneration and avoid stop-and-go traffic. Regular maintenance can also prevent clogging and minimize the impact on fuel economy. Although it does consume a bit more fuel, the particulate filter in the Tiguan contributes to reducing exhaust pollution, striking a decent overall balance.