Why did the 2013 Passat suddenly start consuming more fuel?
2 Answers
There are many reasons that could cause this situation. Low or damaged tire pressure: You can check whether the tire pressure meets the standard. If the tires are underinflated, fuel consumption will also increase. If the issue is not related to tire pressure, you should check the wear level of the tires. If the tires are severely worn, they may frequently slip, leading to increased fuel consumption. Bearing and brake system failure: If you notice abnormal noises from the wheels while driving or starting the car, you should promptly check whether there is a fault in the bearings or brake system. If the wheels do not rotate normally, it will affect the vehicle speed and increase fuel consumption. Thermostat switch and thermostat failure: When the car's thermostat switch or thermostat is damaged, fuel consumption may increase. A faulty thermostat switch or thermostat can cause the engine coolant temperature to become too low or too high, leading the fuel-injected car's computer to provide incorrect ignition and fuel injection signals. Poor gasoline atomization will significantly increase fuel consumption. You can check this and, if necessary, visit a 4S shop for repairs.
I've been driving a 2013 Passat for several years, and recently the fuel consumption has suddenly increased, which is really frustrating. It might be related to my driving habits, such as accelerating too aggressively or frequently driving long distances in heavy traffic, which increases engine load and burns fuel faster. The colder weather also has an impact—using the heater more in winter and having low tire pressure can consume extra fuel. Additionally, there's severe carbon buildup in the vehicle. I didn’t clean it in time during the last maintenance, leading to incomplete combustion. Abnormal engine or transmission components, like a clogged air filter or worn-out spark plugs, could also be the culprits. I recommend checking and filling the tire pressure yourself first or visiting a professional shop for a comprehensive diagnosis to ensure both driving safety and fuel efficiency.
