The City-Filter^® sets standards

Our diesel particulate filters keep the air all of us have to breathe to live clean. They very effectively hold back the soot particles and particulate matter that arise from diesel combustion and "burn them off" continuously. This is done and guaranteed by HJS's very own sintered metal filter technology, for which we received the German Environment Award (Deutscher Umweltpreis) as long ago as 2003.

Our filter solutions have been tested by the German technical inspectorate TÜV and are recommended by Germany's largest automobile association, the ADAC. All systems have the national type approval required under EU regulations and have been specifically developed for retrofitting. They require no maintenance and last the full lifetime of a vehicle.

Independent tests show that the City-Filter^® sets standards for retrofit filter systems.

Health and environmental protection – By fitting the HJS City-Filter^® to your car, you are sending out a strong message for greater environmental awareness and compatibility, because the filter will allow you to reduce the particulate emissions of your diesel by up to 70% and make a meaningful contribution to protecting the environment and people's health.

Unrestricted access to low emission zones (where applicable) – By retrofitting an HJS City-Filter^®, you have to worry about not being able to drive into certain towns and cities (Germany-specific).

Tax incentive (where applicable) – Different countries such as Germany and the Netherlands for example reward the retrofitting of vehicles with a monetary incentive.

Maintaining value – If a diesel car isn’t fitted with a filter, the EurotaxSchwacke used car price guide today already suggests a resale value that is on average €600 lower than a car with one.