Change Car Particulate Filter (DPF) Kia Optima

Change Car Particulate Filter (DPF)

Easy 0h30–1h30 ~50–150£
Estimated time 0h30–1h30
Estimated labour cost ~50–150£
Difficulty Easy
Vehicles
Optima 2010-2015 1
  • 1.7 CRDi Diesel (D4FD)
Optima 2015-2025 2
  • 1.6 CRDi Diesel (D4FE)
  • 1.7 CRDi Diesel (D4FD)
Check the catalytic converter 0h30
Remove/refit the catalytic converter 0h45–1h30
Renew the catalytic converter 0h45–1h30
Remove/refit the diesel particulate filter 0h45–1h30
Renew the diesel particulate filter 0h45–1h30
Remove/refit the diesel particulate filter/catalytic converter assembly 0h45–3h00
Renew the diesel particulate filter/catalytic converter assembly 0h45–3h00
Prepare the catalytic converter heat shield for installation* 0h45
Remove/refit the AdBlue tank 1h30
Renew the AdBlue tank 1h30
Renew the catalytic converter gasket 1h30

What is a Kia Optima particulate filter?

Diesel engines and direct-injection petrol engines produce soot particles. The particulate filter (DPF/GPF) traps these harmful particles as exhaust gases pass through its honeycomb structure. It is placed on the exhaust line after the catalytic converter.

How does the Kia Optima particulate filter work?

As soot accumulates, the filter periodically burns off (regenerates) the trapped particles. Active regeneration raises exhaust temperatures to 550–600°C, burning soot to ash. This occurs every 300–500 km during normal motorway driving. Vehicles driven only on short urban trips may not regenerate properly, leading to blockage.

When should you change the Kia Optima particulate filter?

The DPF is designed to last 150,000–250,000 km but depends on driving patterns. Signs of needed replacement: DPF warning light, engine in limp mode, excessive exhaust smoke, or diagnostic scan showing excessive back-pressure or failed regeneration cycles.

Can the Kia Optima particulate filter be cleaned instead of replaced?

Yes, professional DPF cleaning can restore a blocked filter at a fraction of replacement cost. However, if the filter substrate is cracked, melted, or structurally damaged, replacement is the only option. Never use a DPF removal/delete service — it is illegal and will fail the MOT/emissions test.

Is it difficult to change the Kia Optima particulate filter?

Difficulty level 2/5: technically straightforward but physically demanding due to the filter's location and weight. Key steps: raise the vehicle, disconnect pressure sensors, remove exhaust clamps/bolts, lower the old DPF, fit the new one with new gaskets, reconnect sensors, clear fault codes, perform a forced regeneration cycle.

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3 models covered

Model Year Range Engines covered Fuel
Optima 2001-2006 2001-2006 2.5 V6 Petrol (G6BV) Petrol
Optima 2010-2015 2010-2015 1.7 CRDi Diesel (D4FD), 2.0 CVVL Petrol (G4ND), 2.0 CVVT Hybrid Electricity,Petrol (G4NE), 2.0 CVVT Petrol (G4KD) Diesel, Electricity, Petrol
Optima 2015-2025 2015-2025 1.6 CRDi Diesel (D4FE), 1.6 T-GDi Petrol (G4FJ), 1.7 CRDi Diesel (D4FD), 2.0 CVVL Petrol (G4ND), 2.0 GDi PHEV Electricity,Petrol (G4NG), 2.0 T-GDi Petrol (G4KH), 2.4 MPI Petrol (G4KE) Diesel, Electricity, Petrol

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