Nissan Navara: D22 chassis rail corrosion behind the cab and at the front rear-spring mount
D22 chassis rail corrosion behind the cab and at the front rear-spring mount is a common body & rust fault on the Nissan Navara on the 1997–2004 cars, and we rate it critical. Putting it right costs $1,500 to $9,000 at New Zealand independent workshop rates. Below is what goes wrong, the symptoms to notice on a test drive, where to look, and what to ask the seller before you hand over any money. It is one of 45 documented faults on the Nissan Navara.
- Vehicle
- Nissan Navara
- Years
- 1997–2004
- System
- Body & Rust
What you are looking at
No photograph available
What goes wrong
The D22's ladder chassis rots from the inside out in two places: the rail in the open gap where the cab meets the tray, and the rail just ahead of the front mounting bracket for the rear leaf spring. Mud, stock effluent, gravel and salt spray get thrown up under the tray, sit on the rail and never dry, and the rail is under its highest bending load at exactly those points. It starts as bubbling and flaky layers, becomes holes, and ends with the chassis cracking or snapping - farm utes that get hosed off once a year are the classic case, and coastal cars are close behind. A structurally rusted chassis fails a warrant, and a legal repair means cutting back to sound steel, plating and welding, with an engineer signing it off. Cars that have already been patched are common, so fresh underseal over the rear half of the chassis is a warning, not a reassurance.
What you would notice
- Flaky, layered rust or actual holes in the chassis rail just ahead of the rear leaf spring's front mount
- Rust bubbles and blistered paint along the rail in the gap between the cab and the tray
- Fresh black underseal, bitumen or spray paint over only the rear half of the chassis
- Creaking, banging or a shudder from under the tray over bumps or when loaded
- Tray sitting slightly skewed, or the cab-to-tray gap different from one side to the other
How to check it
Where to look. Both main chassis rails under the tray. Worst at the passenger-side rail just forward of the front bracket for the rear leaf spring, and where the rails pass through the open gap between the back of the cab and the front of the tray.
Crouch at each rear wheel and shine your phone torch along the chassis rail from the back of the cab to the rear axle - the spot that fails first is the passenger-side rail just ahead of the front mount of the rear leaf spring. Press firmly with your thumb on any rusty or bubbled area: solid steel does not give, and rotten steel crunches or flexes. Look for fresh black underseal, bitumen or spray paint over only the rear half of the chassis, which usually means something has been hidden rather than fixed. Farm and coastal utes are the worst, so ask whether it has lived on a farm, carried stock, or been parked near the sea, and ask when the underside was last washed. Check the warrant history and ask directly whether it has ever failed or been given an advisory for structural rust, and whether any chassis section has been plated or welded. If a workshop inspection is possible: have a mechanic put it on a hoist and check the inner faces of both chassis rails, the body-mount outriggers and the spring hangers, and confirm any earlier plating was done with an engineer's report so it stays legal for a warrant.
What it costs to put right
$1,500 to $9,000 at New Zealand independent workshop rates. That is for this job on its own, not for the car.
Ask the seller
- “Has this ute lived on a farm, carried stock, or been used near the coast?”
- “Has any part of the chassis ever been welded, plated or repaired, and is there an engineer's report for it?”
- “Has it ever failed a warrant for rust, or been given a structural rust advisory?”
- “When was the underside last washed down and undersealed?”
Now check the Nissan Navara you are actually looking at
Everything above is true of the model, and it is free. What it does not tell you is whether THIS car has been looked after: its odometer history and whether the reading has ever gone backwards, whether there is still money owing on it, whether it has been reported stolen, how many owners it has had and what it is really worth today. That comes from the official records for that plate. Enter the plate for the free details, or get the full history and a market valuation from $13.49.
Where this comes from
- Parkers 'Nissan Navara snapped chassis issue - all you need to know' (2017)
- Nissan Navara Truck Forum thread 'Chassis rust' (navaraforum.com)
- Nissan-Navara.net thread 'Chassis corrosion'
- Nissan Navara Truck Forum thread '2013 D22 Rust' (navaraforum.com)
- PistonHeads General Gassing thread 'Nissan Navara chassis rust'
Nissan Navara buyer questions
Is d22 chassis rail corrosion behind the cab and at the front rear-spring mount serious on a Nissan Navara?
We rate it critical and common on the Nissan Navara. The D22's ladder chassis rots from the inside out in two places: the rail in the open gap where the cab meets the tray, and the rail just ahead of the front mounting bracket for the rear leaf spring. Mud, stock effluent, gravel and salt spray get thrown up under the tray, sit on the rail and never dry, and the rail is under its highest bending load at exactly those points. It starts as bubbling and flaky layers, becomes holes, and ends with the chassis cracking or snapping - farm utes that get hosed off once a year are the classic case, and coastal cars are close behind. A structurally rusted chassis fails a warrant, and a legal repair means cutting back to sound steel, plating and welding, with an engineer signing it off. Cars that have already been patched are common, so fresh underseal over the rear half of the chassis is a warning, not a reassurance.
How much does it cost to fix on a Nissan Navara?
$1,500 to $9,000 at New Zealand independent workshop rates. That figure is for this job on its own. A car showing the symptoms on this page is usually worth either walking away from or negotiating down by at least the repair figure.
Which Nissan Navara years are affected?
Our research records this fault on the 1997–2004 Nissan Navara. Build dates move around, especially on imported cars, so treat the range as the years to look hardest at rather than a guarantee either way. The official records tell you the exact build and first registration date for the car in front of you.
How do I check for it before I buy?
Crouch at each rear wheel and shine your phone torch along the chassis rail from the back of the cab to the rear axle - the spot that fails first is the passenger-side rail just ahead of the front mount of the rear leaf spring. Press firmly with your thumb on any rusty or bubbled area: solid steel does not give, and rotten steel crunches or flexes. Look for fresh black underseal, bitumen or spray paint over only the rear half of the chassis, which usually means something has been hidden rather than fixed. Farm and coastal utes are the worst, so ask whether it has lived on a farm, carried stock, or been parked near the sea, and ask when the underside was last washed. Check the warrant history and ask directly whether it has ever failed or been given an advisory for structural rust, and whether any chassis section has been plated or welded. If a workshop inspection is possible: have a mechanic put it on a hoist and check the inner faces of both chassis rails, the body-mount outriggers and the spring hangers, and confirm any earlier plating was done with an engineer's report so it stays legal for a warrant. Look here: Both main chassis rails under the tray. Worst at the passenger-side rail just forward of the front bracket for the rear leaf spring, and where the rails pass through the open gap between the back of the cab and the front of the tray.