In 2009, the ‘Euro 5’ standard was introduced, which led to the requirement for manufacturers to fit Diesel Particulate Filters in the exhaust systems of all diesel cars.
This doesn’t mean that cars built before 2009 don’t have DPFs installed too, many cars manufactured in the years leading up to 2009 were fitted with Diesel Particulate Filters in anticipation of the introduction of the ‘Euro 5’ standard.
The standards were introduced with the target of reducing soot emissions from diesel cars by 80%. The Diesel Particulate Filter does this by trapping the particles of soot, which are created by the combustio...
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