Used Mercedes-Benz X-Class Sill

Yes, sills are a genuine structural and cosmetic body panel on the Mercedes-Benz X-Class, running along the underside of the door apertures between the front and rear wheel arches. The X-Class was only produced in one generation, built on the Nissan Navara NP300 platform, sold in the UK from approximately 2017 to 2020 when Mercedes discontinued the model. Because the production run was short and there was only one generation, the pool of donor vehicles is relatively small, so acting promptly when a matching sill comes up is advisable.

The Mercedes-Benz X-Class ran as a single generation throughout its entire production life from 2017 to 2020 with no structural facelift that altered body pressings, so in principle sills from earlier cars should correspond to later ones. That said, minor mid-production pressing or finish changes are possible and cannot be ruled out entirely, so you should confirm the part against your exact registration with the breaker before purchasing. Never assume fitment purely on year overlap.

Trim level — whether Pure, Progressive, or Power — does not affect sill fitment on the X-Class, as the structural body pressing is the same across all grades. You may find that higher trims have body-coloured lower panels or different cladding finishes over the sill area, so visually the external appearance can differ, but the underlying sill panel itself is not trim-specific. A sill from any trim should suit your car structurally, though factor in any cosmetic finishing differences when sourcing from a breaker.

Engine variant has no bearing on sill fitment whatsoever — the sill is a body structural panel and is identical regardless of whether the donor vehicle was a 220d, 250d, or 350d. You can safely disregard the engine specification when searching for a used sill through a breaker and focus instead on confirming the model year and any finish or cladding details that match your car.

The X-Class shares its NP300 platform with the Nissan Navara, but Mercedes-Benz developed its own distinct body panels, and the sills are not simply shared Navara pressings — the outer styling, proportions, and attachment points differ between the two vehicles. Whether any specific sections of the sill structure interchange at all is not something that can be stated with confidence, and you should confirm with the breaker rather than assuming cross-brand compatibility. Sourcing a sill specifically listed for the Mercedes-Benz X-Class is the safest approach.

In the UK, the Mercedes-Benz X-Class was sold exclusively as a double-cab pickup truck, so there are no alternative body style variants such as single-cab or extra-cab versions to navigate when sourcing a sill here. This simplifies your search considerably compared to some other models — any UK-market X-Class donor vehicle should share the same body configuration. Always confirm the part against your registration with the breaker to be certain.