Most modern diesel vehicles are equipped with Diesel Particulate Filters (DPF), AdBlue systems, or both. These technologies are designed to reduce harmful emissions and support environmental protection efforts. However, they do require specific care and maintenance from the driver.
Diesel Particulate Filter (DPF)
A DPF is a component in the exhaust system that captures and stores harmful soot particles to prevent them from being released into the atmosphere.
To stay effective, the DPF needs to regenerate — a process where the filter heats up to burn off the trapped soot and convert it into ash. This typically occurs when the vehicle is driven at consistent speeds (around 50mph or more) for 15–30 minutes.
⚠️ Important:
• If regeneration doesn’t occur regularly, soot will build up and trigger a warning light.
• Ignoring the warning can lead to DPF blockage and vehicle damage, which is not covered under manufacturer warranties or maintenance packages.
• If you mostly drive short journeys or in stop-start traffic, this may be a concern — consider an alternative fuel type or hybrid/electric technology.
AdBlue System
AdBlue is a fluid used in diesel vehicles to reduce nitrogen oxide (NOx) emissions. Cars fitted with AdBlue will have a separate tank, usually accessed via a blue-capped filler neck, often located near the fuel cap or in the boot — the location varies by vehicle.
AdBlue is a consumable and is not covered by warranty or maintenance plans.
Key Points:
• A dashboard warning will alert you when AdBlue levels are low.
• You’ll have a countdown of miles remaining - if it reaches zero, the vehicle will not restart until AdBlue is refilled.
• Tank sizes can vary from 5 to over 20 litres, so be sure to top up accordingly.
Summary
• DPF and AdBlue systems are essential, but require proper usage and attention.
• Misuse or neglect can lead to costly repairs not covered under most agreements.
• If your driving habits don’t support proper DPF regeneration, you may want to consider a petrol, hybrid, or electric vehicle instead.