The HDi DPFS engine,
a technical benchmark

Inaugurated on the 607 in 2000 as a world first, the diesel particulate filter system has become a benchmark throughout the world. It has been gradually deployed on a large proportion of Peugeot's HDi diesel engines. The HDi DPFS engine offers the driver many benefits.

Fuel economy

The HDi engine reduces fuel consumption.

Consuming less fuel than previous diesel engines, HDi allows more complete combustion. Thanks to the very-high-pressure injection (up to 1800 bar) of the common rail system, the extremely fine spraying of diesel fuel, constant and well distributed, permits more uniform and more complete combustion, giving improved efficiency.

Comparison of the fuel consumption of an HDi engine with a conventional diesel engine:
- 206 1.6-litre HDi 70 hp. 5-speed manual gearbox: combined fuel consumption: 4.3 litres / 113g
- 206 1.9-litre D 70 hp. (old-generation) 5-speed manual gearbox: combined fuel consumption: 5.5 litres / 144g

Difference: 1.2 litres per 100 km, or a difference in touring range of more than 200 km for a 50-litre tank.

Improved performance

With the HDi engine, new prospects are available to the driver.
By comparison with the prior-generation engines, HDi engines have excellent thermodynamic efficiency and far better performance. Acceleration is also easier as of low engine speeds thanks to the very high engine torque, and is available over a broad engine speed range. This also ensures greater safety for overtaking and offers a more flexible driving style to provide unmatched driving pleasure.

Comparison of max. torque* between an HDi engine and a petrol engine:
407 2.2-litre HDi engine, 170 hp. 6-speed manual gearbox: 370 Nm at 1500 rpm
407 2.2-litre petrol engine. 163 hp. 6-speed manual gearbox: 220 Nm at 4150 rpm
* expression of the engine's immediate capacity for driving the car.

Reduced greenhouse effect

The greenhouse effect is a natural phenomenon which makes life on earth possible, the gases contained in the atmosphere such as CO2 absorbing the infrared rays emitted by the sun. The greenhouse effect can be modified if the atmosphere contains an excessive quantity of CO2 (link to Peugeot Universe) which cannot be absorbed by photosynthesis: the climate on the planet warms up.
The HDi engine provides a fuel consumption saving of more than 20% by comparison with an old-generation diesel engine, which is reflected directly by an equivalent reduction in CO2 emissions, i.e. a reduction in greenhouse gases.


Moreover, since the HDi engine can accept up to 30% of biodiesel, it allows and even greater reduction in CO2 emissions. The combination of the HDi engine and biodiesel (for the time being reserved for corporate fleets) therefore represents a very important path for progress to reduce automotive CO2 emissions.

Improved sound insulation

The HDi engine offers the driver improved sound insulation.
Thanks to the very high-tech injection system allowing multiple injection, the HDi engine pre-injects fuel, which can smooth out combustion noise and attenuate sources of vibrations for improved passenger acoustic comfort.