Second Hand Hyundai i40 Exhaust System

The Hyundai i40 was produced from 2011 onwards as a single generation, but there was a facelift around 2014–2015, and exhaust routing or mounting points can differ across that boundary. For the section from the catalytic converter back you may find overlap, but confirm with the breaker against your exact registration and engine code before buying, as a pre-facelift system may not align correctly on a post-facelift shell. Never assume fitment purely on year without checking the engine code matches too.

No — the 1.7 CRDi (engine code D4FD) and the 1.6 CRDi are different engines with different exhaust manifold configurations, pipe diameters, and downpipe geometry, so the systems are not interchangeable. Always match the exhaust to the exact engine code on your V5C, and confirm this with the breaker before purchase. Mixing engine families is one of the most common fitment mistakes on used exhausts.

For the Hyundai i40, trim level — whether S, Active, Style, Premium, or Premium SE — does not affect which exhaust system is fitted; the exhaust follows the engine code and emissions specification, not the trim. You may find minor cosmetic differences such as the finish or tip style on higher trims, so check the visible end of the system matches what you want aesthetically. Confirm engine code and year with the breaker and you can safely ignore trim when searching.

Yes, this matters significantly — Euro 5 and Euro 6 systems can differ in catalyst specification, pipe sizing, and DPF configuration, and fitting the wrong emissions-era system could cause you to fail an MOT emissions test. The i40's production years straddle Euro 5 and Euro 6 requirements, so check your registration on the DVLA or ask the breaker to confirm the emissions standard before agreeing a price. DPF and catalytic converter interchange specifics are strong confirm-with-breaker territory — do not assume these are the same across emissions eras.

The i40 was offered in both saloon and estate (Tourer) body styles in the UK, and the rear section of the exhaust — particularly the back box — will differ in length and mounting position between the two body styles due to the different underbody and boot floor profiles. Centre sections and front pipes may have more overlap, but confirm the exact body style with the breaker alongside the engine code to avoid buying a system that will not hang correctly. Never rely on body-style similarity alone.

A used DPF from a matching engine code and emissions-era i40 can be a cost-effective option, but DPF interchange specifics are genuinely complex — sensor positions, outlet diameters, and calibration requirements can vary even within what looks like the same part. Confirm your exact engine code, registration year, and emissions standard with the breaker, and ask them to cross-reference the part number rather than going on year alone. A mismatched DPF may not clear the fault or could create new ones, so take extra care here.