
First, check the tires. If the tire pressure is insufficient, fuel consumption will increase. If the tire pressure is normal, check the degree of tire wear. When tires are severely worn, slipping signs will frequently appear, which also increases fuel consumption. Replacing the tires can solve the problem.

After driving for over a decade, I've found that high fuel consumption usually stems from habits and maintenance. Avoid sudden acceleration and braking during daily driving, and use coasting with anticipation more often; maintain proper tire pressure, as underinflation increases friction resistance; change engine oil and filters regularly, and clean engine carbon deposits; don't idle with the AC on for long periods, as fuel consumption will skyrocket. Additionally, opening windows on the highway consumes more fuel than using the AC. Carrying fewer unnecessary items in the trunk to reduce vehicle weight can also save some fuel.

During my last maintenance visit, we discussed fuel consumption issues. The technician said severe carbon buildup can make the engine consume more fuel, recommending a cleaning every 20,000 kilometers; aging spark plugs causing insufficient ignition should also be checked; inaccurate oxygen sensor data can lead to improper fuel injection, requiring professional equipment for diagnosis. For daily driving, it's best to use economy mode and avoid congested routes. Abnormal tire wear can also affect fuel consumption, making regular wheel alignment important.

I found that the reason why the Volkswagen CC is a gas guzzler is often due to driving habits. Avoid flooring the accelerator when starting; accelerate gradually. Try to shift gears around 2000 RPM. Maintaining a steady speed of 80-100 km/h on the highway is the most economical. Using 95-octane clean gasoline can reduce carbon buildup. In summer, don't set the air conditioning to the lowest temperature; around 25°C is sufficient. Turn off the engine if parked for more than three minutes. Remove the roof rack when not in use, as it significantly affects the drag coefficient.


