Used Ford Fiesta Turbo

Both years fall within the Fiesta Mk7 generation (2008–2017) and its facelift (2013–2017), but a 2018 Fiesta is Mk8 territory, which means you are crossing a generation boundary. Engine codes can differ across that boundary even where displacement and fuel type look the same on paper, so confirm with the breaker against your exact registration and engine code before buying.

The Fiesta Mk7 ran from 2008 to 2017, with the facelift arriving in 2013; within that generation the engine code is what really determines fitment, not whether the car is pre- or post-facelift. If your engine code matches what the breaker has on record, there is a reasonable chance the core turbo unit will interchange, but ancillary items and mounting brackets can change mid-production, so confirm those details with the breaker against your registration.

Trim level alone does not determine turbo fitment — what matters is the engine code, which you can find on your V5C or via a VIN check. The ST uses performance-specific engines (such as the 1.6 EcoBoost in the Mk7 ST) that are entirely different from the lower-output units found in Zetec S models, so the turbos are not interchangeable across those engine families; within the same engine code, however, whether a car is badged Zetec S or another non-performance trim makes no difference to the turbo itself.

No — petrol and diesel turbos are engineered for their respective fuel systems and are not interchangeable. Always match fuel type first, then engine code, when searching for a used turbo.

The gearbox itself does not directly dictate the turbo specification, but certain engine and gearbox combinations were paired together in production, and this can affect which ancillary parts are present on a donor car. The core turbo unit follows the engine code, so lead with that when speaking to a breaker.

The turbo itself is a mechanical component, so a direct sensor-for-sensor match is usually sufficient for it to operate, but any ECU pairing or immobiliser implications — particularly where the donor car's parts came as an assembly — are something you need to confirm with the breaker against your specific registration. Supply your engine code and registration number when requesting a quote so the breaker can check compatibility on their system.