Change Car Particulate Filter (DPF) Mercedes-Benz B-Class
Change Car Particulate Filter (DPF)
| Estimated time | 0h30–20h00 |
|---|---|
| Estimated labour cost | ~50–2000£ |
| Difficulty | Easy |
| Vehicles |
B-Class 2005-2011 2
B-Class 2011-2018 7
B-Class 2019-2025 5
|
| Check the catalytic converter | 0h30 |
| Check the diesel particulate filter | 0h30 |
| Remove/refit the catalytic converter | 1h30–6h00 |
| Renew the catalytic converter | 1h30–6h00 |
| Remove/refit the diesel particulate filter | 1h30–6h00 |
| Renew the diesel particulate filter | 1h30–6h00 |
| Prepare the catalytic converter heat shield for installation* | 0h45 |
| Remove/refit the diesel particulate filter/catalytic converter assembly | 2h30–12h00 |
| Renew the diesel particulate filter/catalytic converter assembly | 2h30–12h00 |
| Remove/refit the diesel particulate filter fuel additive injector | 1h30 |
| Renew the diesel particulate filter fuel additive injector | 1h30 |
| Remove/refit the AdBlue tank control unit | 0h30 |
| Remove/refit the AdBlue tank | 3h00–3h30 |
| Drain/refill the AdBlue tank | 1h30–3h00 |
| Renew the AdBlue tank control unit | 0h30 |
| Renew the AdBlue tank | 3h30 |
| Remove/refit the AdBlue injector | 1h30 |
| Renew the AdBlue injector | 1h30 |
| Remove/refit the diesel particulate filter With LED headlights, With additional heater | 20h00 |
| Remove/refit the diesel particulate filter Without LED headlights, With additional heater | 19h00 |
| Remove/refit the diesel particulate filter With LED headlights, Without additional heater | 20h00 |
| Remove/refit the diesel particulate filter Without LED headlights, Without additional heater | 19h00 |
| Renew the diesel particulate filter Without LED headlights, With additional heater | 20h00 |
| Renew the diesel particulate filter With LED headlights, With additional heater | 20h00 |
| Renew the diesel particulate filter Without LED headlights, Without additional heater | 20h00 |
| Renew the diesel particulate filter With LED headlights, Without additional heater | 20h00 |
What is a Mercedes-Benz B-Class 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 Mercedes-Benz B-Class 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 Mercedes-Benz B-Class 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 Mercedes-Benz B-Class 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 Mercedes-Benz B-Class 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.
3 models covered
| Model | Year Range | Engines covered | Fuel |
|---|---|---|---|
| B-Class 2005-2011 | 2005-2011 | 150, -LPG LPG,Petrol (266.920), 170 NGT BlueEFF CNG,Petrol (266.960), 170, -LPG LPG,Petrol (266.940), 180 BlueEFF, LPG LPG,Petrol (266.940), 180 CDI Diesel (640.940), 200 CDI Diesel (640.941), 200 Turbo, -LPG LPG,Petrol (266.980), 200, -LPG LPG,Petrol (266.960) | CNG, Diesel, LPG, Petrol |
| B-Class 2011-2018 | 2011-2018 | 160 CDI Diesel (607.951 (K9K)), 160 Petrol (270.910), 180 CDI Diesel (607.951 (K9K)), 180 CDI Diesel (651.901), 180 CGI, LPG LPG,Petrol (270.910), 200 CDI Diesel (651.901), 200 CDI, -4MATIC Diesel (651.930), 200 CGi Petrol (270.910), 200 NGT CNG,Petrol (270.920), 220 CDI Diesel … | CNG, Diesel, LPG, Petrol |
| B-Class 2019-2025 | 2019-2025 | 160 d Diesel (608.915 (K9K)), 160 Petrol (282.914), 180 D Diesel (608.915 (K9K)), 180 D Diesel (654.920), 180 Petrol (282.914), 200 D Diesel (654.920), 200 Petrol (282.914), 220 4MATIC 48V (MHEV),Petrol (260.920), 220 D Diesel (654.920), 250, -4MATIC 48V (MHEV),Petrol (260.920) | 48V (MHEV), Diesel, Petrol |
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