In recent years, a bigger focus has been put on the reduction of harmful pollutants emitted by cars. Diesel cars use what’s known as a DPF or ‘Diesel Particulate Filter’ to reduce air pollutants ...

I own a 2008 Mazda 6 2.0-litre diesel with 77,000 miles. A little while ago a DPF warning light came on and the car went into 'limp' mode. I spoke with the Mazda dealer who suggested the DPF filter ...