Nissan Navara: D40 chassis frame corrosion (mainly early Spanish-built 2005 to 2008 Navaras)

The chassis frame on early D40 Navaras can corrode from the inside out, as road salt, mud and water get in through seams and the steel rusts from within. Corrosion has been reported mainly in the middle of the chassis near where the cab meets the tray, and at the suspension mounts, and in bad cases the frame rail can crack. Nissan acknowledged chassis corrosion on a small number of D40s sold in Europe from 2005 to 2008 and offered inspections, repairs or buy-backs; Nissan Australia said it had no reported Australian cases, and there is no recall in Australia or NZ.

• Visible rust bubbling or splitting on rear chassis crossmember
• Creaking or popping from rear end when driving over bumps
• Rear leaf spring hanger visibly cracked or separated from frame
• Vehicle sits unevenly at rear
• Structural distortion or deformation visible underneath rear tray

Use a screwdriver or probe to tap and prod the metal — soft or hollow spots indicate internal rust. Examine the full length of both rear frame rails with a torch for longitudinal cracks emanating from the hanger welds. Check for any repair plates or welded patches from a prior rectification. If a workshop inspection is possible: Lift the vehicle and inspect the rear crossmember and the frame rail directly at both leaf spring hanger weld joints.

Parts involved: Body corrosion.

$1,800 to $5,000 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.

• “Has this vehicle been subject to the Australian compulsory recall for rear crossmember rust and if so, can you provide the Nissan rectification certificate?”
• “Has the rear chassis or crossmember been welded or plated at any point?”
• “Has the vehicle been operated in a coastal, high-salt, or heavy off-road environment?”
• “Has the underside ever been professionally rust-proofed or treated?”

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.