Why does the 2013 Peugeot 408 have high fuel consumption?

[VonGabriel]

The actual fuel consumption of the 2013 Peugeot 408 is 7.8L/100KM, while the official MIIT test cycle fuel consumption is 6.7L/100KM. The actual fuel consumption is significantly influenced by driving habits, techniques, road conditions, climate, etc. Generally, a fluctuation of around 10% is considered normal. Below is more information about the Peugeot 408: 1. Body dimensions: The new Peugeot 408 has a length of 4750mm, a width of 1820mm, a height of 1488mm, and a wheelbase of 2730mm. 2. Powertrain: The Peugeot 408 is equipped with mainstream engines from Dongfeng Peugeot, offering two displacement options: 2.0L and 1.6L. The 2.0L model is the main promoted variant of the 408.

[VanCharles]

I've been driving this car for several years and found that the high fuel consumption of the 2013 Peugeot 408 is mainly due to engine design issues. It uses the older 1.6L engine, which is particularly noticeable in city driving - fuel consumption can spike to 10-12L when stuck in traffic, while highway driving can reduce it to 7L. Additionally, commonly overlooked maintenance details can also contribute to higher consumption. For example, an air filter that hasn't been changed for six months can become clogged, restricting airflow and wasting fuel; aging spark plugs that fail to ignite properly lead to incomplete combustion; and low tire pressure can increase consumption by 0.5L. I recommend checking tire pressure monthly, performing regular maintenance, using full synthetic oil, and cleaning fuel injectors - these measures can save significant money overall. For highway driving, closing windows to reduce aerodynamic drag provides further optimization, but ultimately this is characteristic of older vehicles. To save money, it's better to focus on driving habits like gently pressing the accelerator.

[MacJuliet]

As a long-term user of this car, I believe the high fuel consumption of the 408 mainly stems from driving habits and improper maintenance. When I commute through downtown traffic jams, fuel consumption easily exceeds 11L/100km, but drops to 8L/100km during weekend countryside trips. Frequent hard braking and rapid acceleration can cause instant fuel consumption to spike – my tests show it increases by 2L. Maintenance is often overlooked – a clogged air filter increases resistance and should be checked every 5,000km; dirty fuel lines and carbon buildup also guzzle fuel. Another factor is the engine tuning prioritizes power output over fuel efficiency, unlike Japanese cars' eco-focused designs. I recommend owners adopt smooth driving habits, use fuel system cleaners to remove carbon deposits, and regularly check OBD fault codes to detect issues like oil leaks.

[ZaneRose]

Man, I drive a 2013 Peugeot 408 daily, and the high fuel consumption is such a headache! It's normal for it to hit 10L in city traffic during commutes, mainly due to the engine's low thermal efficiency. Plus, I drive a bit aggressively—sudden acceleration really guzzles fuel. I didn't pay attention to the often low tire pressure, but after changing to new tires, I saved 0.8L. Also, blasting the AC or parking outside in hot weather adds to the burden, making summer fuel consumption even worse. Simple maintenance can help, like cleaning the intake filter or switching to energy-saving tires.