A replacement catalytic converter for most vehicles costs between about £80 and £370, and a replacement DPF between about £155 and £590, including VAT. Where the catalytic converter and DPF are one combined unit, as on many modern diesels, expect roughly £315 to £815. Those ranges cover the middle 80% of the more than 3,500 catalytic converters, DPFs and combined units we sell. Below are the starting prices for twelve popular vehicles, then what moves a price up or down.
Prices for popular vehicles
The cheapest part we list for each vehicle, including VAT, from our catalogue on 13 October 2026, with the years our parts for it cover. Each vehicle links to its page, which lists every part by engine with today’s price.
Catalytic converters
| Vehicle | From | Years |
|---|---|---|
| Audi A4 | £50.99 | 1994–2015 |
| Ford Fiesta | £73.99 | 1989 on |
| Ford Focus | £86.99 | 1998 on |
| Ford Kuga | £263.99 | 2008 on |
| Ford Transit | £69.99 | 1985–2016 |
| Honda Civic | £65.99 | 1991–2022 |
| Mercedes Sprinter | £122.99 | 1995–2010 |
| Nissan Qashqai | £162.99 | 2006 on |
| Toyota Prius | £188.99 | 2003–2016 |
| Vauxhall Astra | £60.99 | 1988 on |
| Vauxhall Insignia | £320.99 | 2008–2017 |
| Volkswagen Golf | £49.99 | 1986 on |
DPFs
Many diesels have the DPF and the catalytic converter in one combined unit, so both are shown.
| Vehicle | DPF | Catalytic converter and DPF |
|---|---|---|
| Audi A4 | £283.99 2005–2009 |
£223.99 2007–2020 |
| Ford Fiesta | — | £462.99 2008 on |
| Ford Focus | £161.99 2004–2011 |
£341.99 2003–2020 |
| Ford Kuga | £263.99 2008–2012 |
£576.99 2010–2019 |
| Ford Transit | — | £394.99 2007–2017 |
| Honda Civic | £273.99 2006–2011 |
£487.99 2013–2017 |
| Mercedes Sprinter | £121.99 2006–2010 |
£601.99 2009–2018 |
| Nissan Qashqai | £191.99 2007–2010 |
£456.99 2010–2017 |
| Vauxhall Astra | £120.99 2004–2010 |
£203.99 2004–2015 |
| Vauxhall Insignia | — | £605.99 2009–2017 |
| Volkswagen Golf | £416.99 2003–2008 |
£526.99 2008–2020 |
The price shown is the cheapest part for that vehicle. The part yours needs depends on its engine, year and emissions standard, so its price may be higher. Two of these vehicles also have petrol versions with a combined catalytic converter and GPF: the Volkswagen Golf from £587.99 (2017 on) and the Vauxhall Astra from £581.99 (2021 on).
The short version: the part your vehicle needs is set by its make, model, engine and emissions standard, so the only price that matters is the one for your exact vehicle. The lookup at the bottom of this page finds it in a few seconds.
Typical prices by part type
These figures come from our own catalogue on 13 October 2026. They include VAT, and delivery is free to most UK addresses.
| Part | Typical price (middle 80%) | Median price |
|---|---|---|
| Catalytic converter (petrol and diesel) 3,076 in our range |
£77.99 – £371.99 | £156.99 |
| Diesel particulate filter (DPF) 230 in our range |
£154.99 – £585.99 | £297.99 |
| Combined catalytic converter and DPF 213 in our range |
£314.99 – £814.99 | £505.99 |
| Combined catalytic converter and GPF (petrol particulate filter) 23 in our range |
£581.99 – £815.99 | £647.99 |
The median is the middle price: half the parts cost less, half cost more. We give the middle 80% rather than the full range because a handful of parts for rare or high-performance vehicles sit far above everything else and would make the range meaningless for most people.
Why the price varies so much
The emissions standard
Inside a catalytic converter is a ceramic honeycomb coated with precious metals1, such as platinum, palladium and rhodium2. Each part is made for particular engines and emissions standards, and in our range the typical price broadly rises with the Euro emissions standard the vehicle was built to:
| Euro standard | Petrol catalytic converters (median) | Diesel catalytic converters (median) |
|---|---|---|
| Euro 2 | £117.99 | £95.99 |
| Euro 3 | £271.99 | £153.99 |
| Euro 4 | £258.99 | £230.99 |
| Euro 5 | £335.99 | £343.99 |
| Euro 6 | £380.99 | £534.99 |
The table counts parts catalogued for a single Euro standard; there are only seven Euro 6 diesel catalytic converters among them. Across the whole range, petrol catalytic converters have a median price of £170.99 and diesel ones £137.99. Your vehicle’s Euro standard is usually shown on its registration document (V5C)3; our Euro emissions standards guide explains the levels.
Separate parts or one combined unit
On many modern diesels the catalytic converter and the DPF are built into one housing. It’s one part to buy and fit, but it does two jobs, which is why combined units sit well above either part on its own. Newer direct-injection petrol engines can have the same arrangement with a petrol particulate filter; see what is a GPF?
Type-approved or standard
This is the difference people most often miss. A type-approved (homologated) catalytic converter has been tested by an independent technical service and approved for a specific list of vehicles3,4. It is a legal requirement for most vehicles first registered on or after 1 March 20013,5. In our range these parts carry an H at the end of the part number6, and they cost more:
| Catalytic converters | Parts in our range | Median price |
|---|---|---|
| Type-approved (H suffix) | 1,674 | £230.99 |
| Standard replacement | 1,402 | £102.99 |
A standard replacement is not a cheaper version of the same thing: it is the correct part for vehicles that don’t require approval, such as a catalytic converter for a vehicle first registered before 1 March 20013. Where the law requires an approved part, a business that supplies or fits one that isn’t approved commits an offence5. Our part finder only shows parts catalogued for your vehicle. What homologated means and type approval and the law explain the rules in full.
Standard or premium DPF
Some DPFs come in two versions. The premium range (a P at the end of the part number6) uses a silicon carbide (SiC) core7 instead of cordierite ceramic. It withstands higher temperatures and carries a three-year warranty instead of two. 112 of the 230 DPFs in our range are premium. Understanding our part numbers has the detail.
What else goes into the total cost
- Fitting. We supply parts; your garage fits them, so ask for a fitting quote alongside the part price. Time varies widely between vehicles. Seized fixings, sensors that have to be moved across and, on some diesels, a DPF adaptation or reset with diagnostic equipment all add to it. Our guides to fitting a catalytic converter and fitting a DPF explain what’s involved.
- The fitting kit. Where a part has a matching fitting kit (new gaskets, clamps, nuts and bolts), it’s included in the price shown. Reusing old, corroded fixings is a common cause of leaks.
- Delivery. Free to most UK addresses, with next working day delivery on orders placed before 4pm, Monday to Thursday. See delivery.
- Warranty. Two years on our parts, three years on premium silicon carbide DPFs. See warranty and how to claim.
Check it’s the part that has actually failed
The cheapest repair is the one you don’t need. An MOT emissions failure isn’t always the catalytic converter: a faulty sensor, a misfire or an air leak can produce the same result, and replacing the converter won’t fix any of them. Likewise, a blocked DPF can sometimes be recovered with a long drive or a forced regeneration before replacement is needed. Our guides to MOT emissions failures, why catalytic converters fail and why DPFs block will help you and your garage narrow it down first.
Found it cheaper elsewhere?
If you find the identical part advertised for less by another UK retailer, tell us before you order. Under our Price Promise we aim to beat the lower delivered price by half the difference again.
Find the exact price for your vehicle
Enter your vehicle’s registration in the lookup below, or browse by make and model, to see the parts catalogued for it with today’s prices. Prices change over time, and the product page always shows the current one.
Sources (accessed 13 October 2026)
- BM Catalysts, “Catalytic Converter Technical Poster” (2025). bmcats.com
- RAC, “Catalytic converters – how to protect yours from theft” (6 August 2026). rac.co.uk
- Department for Transport, “Catalytic converters and diesel particulate filters” (updated 30 May 2023). gov.uk
- Vehicle Certification Agency, “What is Vehicle Type Approval?” (page updated 15 May 2024). vehicle-certification-agency.gov.uk
- The Motor Vehicles (Replacement of Catalytic Converters and Pollution Control Devices) Regulations 2009 (SI 2009/1899), regulations 2 to 8 and the Schedule, as amended. legislation.gov.uk
- BM Catalysts, “Get to know our part numbers” (2024). bmcats.com
- BM Catalysts, company brochure (November 2023). bmcats.com
