The DPF makes your diesel more environmentally friendly - but do you know how to look after it?
Diesel cars are brilliant for families and well known for their huge amounts of mileage. But to drive a cleaner diesel, there's a trade-off in the form of the diesel particulate filter, or DPF.
All diesel cars since 2009 have been fitted with a diesel particulate filter (or DPF) in the exhaust to meet strict European emissions laws and targets.
The DPF works like a catalytic converter and traps the solid particles produced by the diesel engine in a honeycomb matrix, stopping the soot from passing into the atmosphere. But there's a catch.
To enjoy the benefits of a frugal diesel, the soot caught in the filter has to be burnt off regularly to keep the DPF working. When the levels in the filter reach a certain point, the DPF has to go through a regeneration process.
As long as the DPF periodically cycles through this process of trapping particles and then burning them off, you'll likely have no issues with it.