Used Mercedes-Benz Viano Bonnet Latch

Yes, the Viano is a front-engined van-based MPV with a conventional bonnet, so it does have a bonnet latch as standard across all variants. The latch mechanism sits at the front of the bonnet and works in conjunction with the release cable and safety catch, just as you'd expect on any conventional bonneted vehicle.

The Viano was produced as a single generation (W639) running from 2003 to 2014, with a facelift arriving in 2010 that updated the front-end styling including the grille, bumper and lights. Your bonnet latch needs to come from the correct side of that 2010 facelift boundary, so identify whether your vehicle is a pre-facelift (2003–2010) or post-facelift (2010–2014) model before searching.

These two vehicles sit either side of the 2010 facelift, which brought changes to the front-end structure of the W639. While the latch mechanism itself may share similarities, whether it actually interchanges across that facelift boundary is something you should confirm with the breaker against your registration, as subtle differences in the release mechanism or striker plate position could affect fit.

No — trim level does not affect bonnet latch fitment on the Viano. Ambiente, Trend and Avantgarde models all share the same front-end structure within a given facelift period, so the latch is determined by generation and facelift date, not trim. You may find minor cosmetic differences in how the bonnet sits or the grille surrounds, but these don't alter the latch itself.

No — engine variants (diesel or petrol) and wheelbase options (Compact, Standard, Long, Extra-Long) do not affect the bonnet latch, as the front-end structure is shared across all of these configurations within the W639 generation. Simply match the facelift period (pre-2010 or post-2010) and you can disregard the rest of the vehicle spec when sourcing this part.

Give them your full registration number so they can confirm the exact build date and facelift status, as the key split is pre-facelift (2003–2010) versus post-facelift (2010–2014) on the W639. You don't need to specify wheelbase, trim level or engine, but asking the breaker to cross-reference the part number against your reg is the safest way to avoid ending up with an incompatible latch.