
Pure economy micro cars: no more than 7L/100km; Small cars/hybrids: no more than 8L/100km; Compact/light SUVs: no more than 10L/100km; Mid-size cars/mid-size SUVs: no more than 12L/100km. Below is an introduction about fuel consumption: 1. Introduction: Constant-speed fuel consumption refers to the fuel economy indicator when a vehicle travels at a constant speed on good road surfaces. Since constant-speed driving is a basic operating condition for vehicles on highways, and this type of fuel consumption is easy to measure, it is widely adopted. 2. Error: As vehicles often experience various working conditions such as acceleration, deceleration, braking, and engine idling during actual driving, constant-speed fuel consumption tends to be lower and differs significantly from actual fuel consumption. This difference is particularly greater for vehicles frequently used for short-distance urban driving. 3. Influencing factors: Reducing weight, improving aerodynamics, and maximizing engine thermal efficiency.

As an experienced driver with over a decade behind the wheel, I believe fuel consumption should be judged based on the specific vehicle. For a regular 1.6L family sedan, 7-8 liters per 100km in city driving is normal, but it might spike to 10 liters with AC on in traffic jams. Heavier SUVs typically consume 10-12 liters. New cars have lower fuel consumption in the first two years, gradually increasing after 50,000-60,000 kilometers. Most importantly, driving habits matter – sudden braking and aggressive acceleration waste fuel. The most reliable method is maintaining long-term fuel consumption records for your own car, as road conditions vary for every vehicle.

A buddy who often drives long distances tells you that highway fuel consumption is the most economical. With my 2.0T car, setting cruise control at 110 km/h on the highway consumes just 6.5 liters per 100 km, while in the city it goes up to over 9 liters. Smaller displacement cars are even more fuel-efficient; a 1.5L car typically uses just over 5 liters on the highway. New cars with auto start-stop can save some fuel in traffic jams. It's recommended to monitor the average fuel consumption displayed on the trip computer—resetting it after refueling and driving about 100 km gives the most accurate reading. If an older car suddenly starts consuming more fuel, it's time to check the spark plugs and oxygen sensors.

I've been driving for just a year and pay special attention to fuel consumption. Nowadays, small-displacement cars are quite fuel-efficient, with a 1.5L automatic transmission averaging just over 7 liters per 100km under normal conditions. Fuel consumption varies significantly across seasons, being highest during cold starts in winter. Maintaining a speed of around 90 km/h on highways is the most economical. Remember, keeping tire pressure at the right level saves fuel; exceeding 2.5 bar actually increases consumption. Filling the fuel tank too full adds weight and wastes fuel. Upgrading to larger wheel sizes can easily increase fuel consumption.

A friend who has driven three types of cars mentioned that Japanese cars are generally more fuel-efficient than German cars. The newly released hybrid models are even more impressive, with hybrids consuming only four to five liters per 100 kilometers in city driving. Electric vehicles, of course, have zero fuel consumption. Turbocharged engines save fuel on highways but are less efficient than naturally aspirated engines in urban areas. Maintenance is crucial for fuel-powered cars; changing the engine oil can bring fuel consumption back to normal levels. Avoid using overly thick engine oil as it increases the engine's workload. Regularly check the air filter to ensure the intake system remains unobstructed.

I pay special attention to fuel efficiency while driving and find that maintaining a steady speed is the most economical. For cars with the same displacement, automatic transmissions consume about half a liter more fuel than manual ones. It's normal to use an extra liter of fuel when running the air conditioning in summer. The most concerning issue is carbon buildup—frequent short trips in the city can lead to engine carbon deposits, gradually increasing fuel consumption. It's recommended to occasionally drive on highways to clear out carbon buildup. Don't delay oil changes for too long, as aged oil reduces lubrication and increases fuel consumption. Spark plugs should be considered for replacement after 50,000 kilometers, as their declining ignition efficiency leads to higher fuel consumption.


