What are the solutions for high fuel consumption in Peugeot 307?
2 Answers
Peugeot 307 high fuel consumption causes and solutions: 1. Engine carbon deposits: Excessive carbon deposits can lead to incomplete combustion of the air-fuel mixture, increasing fuel consumption. Regular cleaning of engine carbon deposits is necessary, including: intake passages, throttle valve, fuel injectors, and cylinder deposits. The solution is timely carbon cleaning. 2. Vehicle weight: Carrying excessively heavy loads can increase fuel consumption by about 2% compared to normal driving. The solution is to reduce unnecessary weight when driving. 3. Clogged air filter: A blocked air filter restricts air intake, causing an overly rich mixture or exhaust pipe blockage. The solution is timely air filter replacement. 4. Worn spark plugs: Excessive wear on spark plug electrode gaps leads to insufficient ignition, causing incomplete combustion and increased fuel consumption. The solution is timely spark plug replacement. 5. Low cylinder pressure: Practice shows that cylinder pressure below specified values can increase fuel consumption by 20%-25%. The solution is timely cylinder pressure inspection.
I drove a Peugeot 307 for many years, and the high fuel consumption was really a headache, but I figured out quite a few solutions. If the tire pressure is too low, it increases friction and wastes gasoline, so you need to check the tire pressure regularly and keep it at the value recommended in the vehicle manual. Driving habits also play a big role—avoid frequent sudden acceleration or hard braking, and maintaining a steady cruising speed can save fuel. On the highway, don’t roll the windows down too much, and avoid using the air conditioner at its highest setting. Clear out unnecessary items from the trunk to lighten the load. Additionally, engine issues are common—for example, a dirty air filter restricts airflow, so check if it needs replacement every 5,000 kilometers. Worn-out spark plugs or degraded engine oil also increase fuel consumption, so during maintenance, be sure to mention high fuel consumption and ask the mechanic to check the fuel system and sensors. If fuel consumption still doesn’t improve, go to the 4S shop for a check-up immediately—don’t wait until a small problem becomes a costly one. Develop good habits, like recording the mileage and calculating fuel consumption each time you refuel, to detect and address issues early.
