DPFs and GPFs
What is a GPF? Petrol particulate filters explained
A GPF is the petrol version of a DPF. What it does, why direct-injection petrol engines have one, how to tell if yours does, and the law on…
DPFs and GPFs
Diesel and petrol particulate filters: how they work, why they block and what to do.
Looking for the basics? Our Help & Advice guides cover how catalytic converters and DPFs work, fitting, the law and warranty.