What are the solutions for high fuel consumption in Peugeot 508?

[StPaislee]

You can reduce fuel consumption by cleaning engine carbon deposits, checking the oxygen sensor, regularly replacing the three filters, and inspecting the electronic control unit. The combined fuel consumption of the Peugeot 508 is 6.0-6.1L/100km. There are currently 5 models of the Peugeot 508 on sale: the Pioneer Edition and the Drive Fun Edition, with a combined fuel consumption of 6.0L/100km. The Sport Edition, Passion Edition, and Drive Control Edition have a combined fuel consumption of 6.1L/100km. The above figures are the NEDC combined fuel consumption, which is the fuel consumption data measured under the NEDC test procedure. The actual fuel consumption is higher than this value, ranging from 8.0-8.8L/100km. Methods to reduce fuel consumption: Clean engine carbon deposits: Excessive engine carbon deposits are a significant cause, mainly due to the use of unsuitable fuel. It is recommended to add a certain amount of cleaning agent when refueling. If the effect is not obvious, it indicates that there is a considerable amount of carbon deposits in the engine. In this case, the car must be taken to a 4S shop for professional technicians to clean the carbon deposits inside the engine. Check the oxygen sensor: As an internal control unit of the car, the oxygen sensor mainly monitors the fuel-air ratio of the engine. Once it is damaged, it will cause an imbalance in the fuel-air ratio, leading to a sudden increase in fuel consumption. If the oxygen sensor is damaged, the exhaust pipe will emit darker-colored exhaust gas while driving, and the oxygen sensor should be replaced at this time. Regularly replace the three filters: During the use of the vehicle, the oil filter, air filter, and fuel filter must be replaced regularly. If they are not replaced for a long time, they will become dirty and send incorrect information to the engine control unit, resulting in incomplete fuel combustion and increased engine carbon deposits. Check the electronic control unit: Although the engine's electronic control unit is highly reliable, in vehicles that have been used for a long time, various faults may inevitably occur.

[VonEliana]

When I was driving the Peugeot 508 and noticed a sudden increase in fuel consumption, I changed my driving habits to address the issue. Previously, I enjoyed rapid acceleration and hard braking, which wasted a lot of fuel; now I maintain a steady speed, especially on highways, using cruise control at around 80 km/h to avoid frequent lane changes. Insufficient tire pressure increases resistance, so I check it monthly to ensure it's inflated to the recommended level. Daily engine maintenance should not be overlooked either—using high-quality oil and cleaning the air filter can improve combustion efficiency. When the air filter gets dirty, I replace it with a new one, and after ensuring smooth air intake, fuel consumption noticeably decreases. By sticking to these practices, my fuel consumption dropped from 11 liters to around 9 liters per 100 km, saving money and being more environmentally friendly.

[WalterAnn]

When facing fuel consumption issues, I prioritize checking vehicle maintenance details. A clogged air filter makes the engine work harder, and replacing it immediately reduces fuel consumption. Low tire pressure increases rolling resistance, so I measure and inflate them to the manufacturer's standard weekly. Regular engine maintenance, such as changing the oil and filter every 5,000 kilometers and using low-viscosity lubricants to reduce friction loss, is essential. Worn spark plugs also affect combustion, and replacing them optimizes ignition efficiency. After performing these simple tasks, the Peugeot 508's fuel consumption stabilizes while avoiding major repair costs.

[MacBrady]

Simple Tips to Adjust for Higher Fuel Consumption. When driving my 508, I avoid stepping hard on the accelerator, start gently, and maintain a steady speed for optimal fuel efficiency. Reducing the weight inside the car, such as clearing out trunk clutter, lightens the load and saves some fuel. In urban driving conditions, practice anticipatory driving to minimize sudden braking and maintain smoothness. Use the air conditioning moderately—avoid setting it too low to reduce additional load. Developing these habits naturally lowers fuel consumption; just pay attention to them in daily driving.