Ford Fiesta Exhaust System: Specs, Fitment & Common Faults

A confirmed, major current Ford-wide recall covers DPF cracking on diesel Fiestas built 2014-2023 — check your registration before anything else.

Illustration for editorial purposes

OEM Part Numbers

Accuracy note: we weren't able to verify a confident Ford Fiesta exhaust system part number at the time of writing. Please confirm the correct part via a Ford dealer or parts specialist using your VIN.

A Genuinely Major, Current Recall Worth Checking If You Have a Diesel

This is worth checking directly against your registration if you own a diesel Fiesta: Ford has confirmed a major, current recall (reference 24E06, part of the broader KBA 14555R campaign) addressing a design-related weakness in the Diesel Particulate Filter material that can develop hairline cracks over its service life. This isn't a minor administrative recall — a cracked DPF lets unburned particulate matter bypass the filter, which can cause a failed MOT emissions test and potential Clean Air Zone compliance issues. The recall covers over 1.2 million Ford diesel vehicles worldwide across nearly the entire range — including the Fiesta — built between 2014 and 2023.

What Ford's remedy involves: a free software recalibration to the DPF regeneration process, along with inspection and, where necessary, filter replacement — carried out at no charge at any authorised Ford dealer. Replacement filters carry a genuinely generous 10-year/160,000km warranty. Check your registration at gov.uk/check-vehicle-recalls, and don't ignore a spanner or engine management warning light if you haven't yet had this checked.

The Part That Announces Its Own Problems

Unlike a lot of the parts on this site, this is one where you'll usually hear the fault before you see it — a rattle, a drone, a sudden increase in noise that wasn't there last week. That's actually useful, since it gives you a head start on catching problems early.

Before you buy: exhaust configuration differs significantly by engine size, fuel type and whether your car has a particulate filter. Always confirm against your VIN before ordering.

What It Does

The exhaust system channels burnt gases away from the engine, reduces noise through the silencer, and on most modern cars, treats emissions through a catalytic converter and particulate filter before gases exit the tailpipe. Petrol and diesel versions of the same model often use entirely different systems due to different emissions treatment requirements.

Fitment & Compatibility

Exhaust systems differ substantially between the petrol, hybrid and plug-in hybrid versions of the Fiesta, since the hybrid versions integrate differently with the electric motor's contribution to deceleration. Always confirm the exact part fitted to your specific engine and powertrain combination before ordering. Whether you're sourcing a replacement exhaust system for your Ford Fiesta from a dealer, specialist, or online marketplace, always check compatibility against your registration or VIN before buying.

Common Faults

Symptoms of Failure

Rattling noise, especially on startup — often a loose or corroded heat shield rather than the exhaust pipe itself, though worth checking both.
Noticeably louder engine noise — points to a hole or split somewhere in the pipe or silencer, typically caused by corrosion.
Visible rust or flaking on the underside — a warning sign of corrosion that will eventually lead to a leak if left unaddressed.
Failed emissions test — can point to a failing catalytic converter or particulate filter rather than the pipework itself.

DIY Replacement Difficulty

Replacing a full exhaust system is a moderate-to-difficult DIY job requiring access to raise the car safely and often penetrating oil to free corroded fixings. Catalytic converter and particulate filter replacement usually requires specific diagnostic equipment afterward to reset fault codes, making that portion of the job better suited to a garage. Expect 2–4 hours for a full system on a home ramp, or less at a garage with the right lift access.

OEM vs. Aftermarket

Reputable aftermarket exhaust systems are widely regarded as a safe, cost-effective alternative to OEM parts for the pipework and silencer sections. Catalytic converters and particulate filters are worth sourcing from well-regarded brands specifically, since counterfeit or substandard versions are a common cause of failed emissions tests and check-engine warnings.

More Ford Exhaust System Guides

The same part, covered across other Ford models.