Nissan AD Van: Wheel arch and sill rust from commercial NZ use

AD Vans in commercial NZ service accumulate significant rust in the rear wheel arches, front wheel arch lips, and lower sill sections. Gravel and road spray chip the paint in the wheel arch area, and the resulting bare steel corrodes rapidly — especially in vehicles operated in coastal or rural environments. Commercial operators rarely apply rust protection treatments, and the van body design allows water to pool at arch seams. Rust in these areas is often cosmetic initially but progresses to structural if left untreated, and arch rust can compromise the rear suspension mounting points in severe cases.

• Visible rust bubbling or perforation at the rear wheel arch lips and lower rear body panels
• Paint flaking or brown staining in the front wheel arch area around the arch lip
• Lower sill panels showing blistering or paint separation
• Visible rust when looking into the underside of the arch liner area

1. 1

   Inspect all four wheel arches carefully for rust bubbling at the arch lip seam — this is the first area to perforate.

2. 2

   Check the lower sill below each door for rust.

3. 3

   Remove arch liners if possible to inspect behind them.

4. 4

   On the cargo floor inside, check for rust penetration from underneath, especially around the rear axle area.

5. 5

   Use a torch to inspect the chassis rail sections above the rear axle.

Parts involved: Body corrosion.

$400 to $1,600 at New Zealand independent workshop rates. That is for this job on its own, not for the car.

An estimate, in NZD, for the repair as normally carried out. What a specific car costs depends on which part has failed and what it damaged on the way — treat this as the floor for a negotiation, not a quote.

• “Where was this vehicle operated — coastal area, rural, or urban use?”
• “Has any rust treatment or underbody coating been applied?”
• “Has any panel or arch rust been repaired — can I see photos or the repair documentation?”

The failure described above is documented in published sources — owner forums, technical service bulletins, recall notices and workshop write-ups — held in our fault database. The inspection instructions and the cost estimate are KickTyres’ own interpretation of them, and it is a starting point for an inspection rather than a manufacturer statement.