What's a DPF Diesel Particulate Filter?

Imagine your diesel engine as a heavy metal band, powerful, but prone to making a lot of noise and smoke. The DPF is like that sensible friend who makes sure the band doesn't disturb the neighbours. It's a filter that catches and stores exhaust soot to reduce emissions from diesel cars. In techy terms, a DPF is a device fitted to the exhaust system of modern diesel vehicles. It captures and stores exhaust soot (tiny bits of carbon) to reduce emissions from diesel cars. When it's full, it goes through a process called 'regeneration' – burning off the soot to leave only a tiny ash residue. It's like a self-cleaning oven but for your car.