DPF cleaning cost UK (2026): regen, off-car clean or replacement?

Updated 23 July 2026 · OBDCode UK editorial

Typical UK prices are £90–£150 for a controlled forced regeneration and £180–£350 for an off-car professional clean. Replacement ranges from about £500 to £3,500, so pressure, soot/ash load and blocking faults should be documented first.

Typical UK fitted prices in 2026

WorkTypical price
Diagnosis and live-data check£40–£100
Forced regeneration£90–£150
Off-car chemical/aqueous clean£180–£350
Aftermarket replacement fitted£500–£1,200
OEM/integrated replacement£1,000–£3,500

These are planning ranges, not quotes. Confirm whether VAT, diagnosis, fluids, calibration and related parts are included.

What changes the price?

  • Soot vs ash: soot may burn during regeneration; accumulated ash cannot.
  • On-car vs off-car: a bottle/additive is not equivalent to removing and flow-testing the filter.
  • Root cause: pressure sensor, thermostat, EGR, injector, turbo or journey pattern can block the replacement too.
  • Part legality: replacement must be suitable and compliant; removal is not a repair.

Confirm the fault before authorising the job

Ask for fault codes, calculated soot/ash, differential pressure at idle and raised RPM, and why regeneration is permitted. Start with our DPF warning-light guide.

How to compare quotes like-for-like

Require the same scope: removal/refitting, sensor pipes, oil/filter change after fuel dilution, before/after pressure or flow report, warranty and what happens if cleaning cannot restore flow.

Tools that help with this check

Frequently asked questions

Is a forced regeneration the same as DPF cleaning?

No. Regeneration burns soot in place. Off-car cleaning can remove deeper soot and ash, but neither fixes the fault that caused blockage.

Can a DPF be too blocked to clean?

Yes. Melted, cracked, oil-contaminated or severely ash-loaded filters may need replacement; pressure and physical inspection should support that decision.

Sources and further reading

General guidance for UK drivers, not professional advice. MOT rules follow the DVSA inspection manual (2026 edition).