How Many Liters of Fuel Does a 245-Horsepower Engine Consume at Idle for One Hour?
4 Answers
245-Horsepower Engine Consumes Approximately 3 to 5 Liters of Fuel per Hour at Idle. Below are the relevant details: 1. Introduction to Idle: Idle is an operational state of a vehicle where the engine runs without engaging any gear. The engine speed during idle is referred to as the idle speed. Idle speed can be adjusted by modifying the throttle opening size, among other methods. Idle essentially means the engine is 'producing power without doing work.' 2. Definition of Idle: Idle refers to the engine running without any load, only overcoming the internal friction resistance of its components, without delivering any external power. The minimum speed required to maintain stable engine operation is called idle speed, which is one of the five fundamental operating conditions of an engine. A well-functioning engine typically has an idle speed ranging from 550 to 800 RPM.
I've driven several cars with over 200 horsepower, and idle fuel consumption is a common issue. Generally, a 245-horsepower engine consumes about 1.5 to 2 liters of fuel per hour at idle, depending on the model; SUVs or sports cars with larger displacements may approach 2 liters. Factors influencing this include engine condition, ambient temperature, whether the air conditioning is on, and the vehicle's maintenance level. If the engine oil is too old or the spark plugs are dirty, fuel consumption may rise to around 2.5 liters. I remember recording idle data with the onboard display, fluctuating around 1.7 liters per hour. To avoid waste, I recommend minimizing prolonged idling; this not only saves fuel and money but also prevents carbon buildup and emission pollution. Modern cars consume less fuel when starting, so turning off the engine if parked for more than 30 seconds is wiser. Overall, based on my experience, an average of 1.8 liters of fuel per hour at idle for a 245-horsepower car is a reliable reference, but actual testing is needed for verification.
A 245-horsepower engine's idle fuel consumption depends on displacement, typically corresponding to 2.5-3 liter engines, consuming about 1.2-1.8 liters per hour. Idle power output is only equivalent to 10-20 horsepower, with fuel mainly used to maintain basic operation; larger displacement leads to higher fuel consumption. The efficiency of the fuel injection system also has a significant impact—for example, vehicles with well-optimized electronic control units (ECUs) may consume 10% less. A practical calculation method involves recording fuel gauge changes to estimate. Temperature or altitude variations can cause fuel consumption fluctuations, such as winter idling consuming around 0.5 liters more. It is recommended that owners regularly check vehicle conditions, as keeping the air filter clean can reduce waste. Overall, an average estimate of 1.5 liters per hour is reasonable, but it should be verified with actual vehicle data for greater accuracy.
Idling fuel consumption for a 245 horsepower engine is approximately 1-2 liters per hour, excessive idling wastes resources and harms the environment. Engine efficiency is low during idling, with each liter of fuel producing significant carbon emissions, equivalent to short-distance driving emissions. I advocate for the habit of turning off the engine when parked; modern vehicles have minimal startup losses, avoiding prolonged idling saves money and reduces emissions. Personal observations indicate medium-sized cars consume around 1.5 liters of fuel when idling, which decreases when the vehicle is in good condition. Checking fuel quality is also important, as poor-quality fuel increases consumption. From an environmental perspective, reducing idling is an inevitable trend.
