What are the reasons for the high fuel consumption of the 13th-generation Crown?
3 Answers
13th-generation Crown high fuel consumption reasons introduction: 1. Affected by temperature: causing fuel consumption fluctuations, winter temperatures are low, fuel consumption will increase somewhat. 2. Vehicle not maintained for a long time: dirty engine oil and air filter can also lead to increased fuel consumption. Dirty oil causes poor lubrication, increasing resistance in various moving parts of the engine, requiring more energy to overcome resistance, thus increasing fuel consumption. 3. Insufficient tire pressure: insufficient pressure increases the contact area between tires and the ground, increasing friction, that is, driving resistance, leading to higher fuel consumption. 4. Excessive carbon deposits in the vehicle: carbon deposits can accumulate in the throttle, fuel injectors, intake ducts, and piston tops. Excessive carbon deposits in any of these areas can cause incomplete combustion, leading to increased fuel consumption.
Having driven an old Crown for over a decade, I'm quite familiar with this issue. The 13th-gen Crown's high fuel consumption is primarily due to inherent engine characteristics. Its 2.5L or 3.0L V6 engine has a substantial displacement, and combined with a body weight of approximately 1.7 tons, it's particularly fuel-intensive during city starts. The older 5-speed transmission is far less efficient than modern 8-speed units, resulting in significant power conversion losses. Over time, carbon buildup can clog the fuel injectors, exacerbating fuel consumption. Additionally, this generation's aerodynamic design isn't particularly advanced, and the factory-fitted wide tires contribute to high rolling resistance. After prolonged use, fuel efficiency naturally doesn't improve - modern vehicles typically consume 2-3 liters less per 100km.
As a long-term owner, my 13th-generation Crown's fuel consumption has noticeably increased after 150,000 kilometers. The core issues lie in component aging: a faulty oxygen sensor can cause the ECU to inject 20% more fuel; worn piston rings lead to insufficient cylinder pressure, resulting in incomplete combustion; carbon buildup in fuel injectors worsens atomization, creating larger fuel droplets with lower combustion efficiency. Another often-overlooked issue is a faulty carbon canister purge valve, allowing fuel vapors to directly evaporate. Last month, I replaced the aging ignition coils, which immediately reduced fuel consumption by 0.8 liters. I recommend prioritizing inspection of ignition coils and catalytic converters, as these wear-prone components significantly impact fuel economy in older vehicles.
