CriticalCommonBody & Rust

Hyundai Elantra: Rear Trailing Arm Mounting Point Rust-Through

Rear Trailing Arm Mounting Point Rust-Through is a common body & rust fault on the Hyundai Elantra on the 2011–2015 cars, and we rate it critical. Putting it right costs $800 to $3,200 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 30 documented faults on the Hyundai Elantra.

Vehicle: Hyundai Elantra
Years: 2011–2015
System: Body & Rust

This page covers the Hyundai Elantra as a model. Some faults only affect particular engines or build years — enter a plate below to narrow the list to one car.

All Hyundai Elantra faults30 documented faults on this model

What you are looking at

No photograph available

We do not hold a verified photograph of the Body corrosion yet. We would rather show none than show a picture of a different part.

What goes wrong

The rear trailing arm chassis mounting points on the Elantra MD are prone to rust-through in NZ and AU coastal and high-humidity environments. The pressed steel mounting brackets trap moisture and road debris, accelerating corrosion from the inside out. Advanced cases see the mounting point perforate and structural integrity fail, creating a critical handling and safety hazard. This is a WoF and RWC hard failure point that some sellers conceal with fresh underseal paint.

What you would notice

Visible rust staining or perforation at the rear suspension mounting area when viewed from under the vehicle
Creaking or clunking from the rear suspension over bumps or when loaded
Rear wheel alignment that drifts or cannot be corrected to specification
Rear handling instability or vagueness particularly in cornering
WoF or RWC rejection for structural corrosion at suspension mounts

How to check it

Where to look. Rear underbody - trailing arm-to-chassis mounting brackets and surrounding floor pan

Use a screwdriver tip to test for perforation - soft or crumbling metal is an automatic WoF failure. Look for fresh underseal or paint in this area specifically, which can indicate an attempt to conceal rust before sale. Check inner wheel arches and the rear subframe mounts for related corrosion. If a workshop inspection is possible: Hoist the vehicle and inspect both rear trailing arm mounting points with a torch and probe.

Parts involved: Body corrosion.

What it costs to put right

$800 to $3,200 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.

Ask the seller

“Has the car had any rust repair or underseal work done?”
“Has it always been garaged or been parked near the coast?”
“Has it passed its most recent WoF or RWC with no corrosion advisories?”
“Has the car ever been on a hoist for a suspension or rust inspection?”

Now check the Hyundai Elantra 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.

Not sure what you would be paying for? See what a full KickTyres check includes.

Where this comes from

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.

Hyundai Elantra buyer questions

Is rear trailing arm mounting point rust-through serious on a Hyundai Elantra?

We rate it critical and common on the Hyundai Elantra. The rear trailing arm chassis mounting points on the Elantra MD are prone to rust-through in NZ and AU coastal and high-humidity environments. The pressed steel mounting brackets trap moisture and road debris, accelerating corrosion from the inside out. Advanced cases see the mounting point perforate and structural integrity fail, creating a critical handling and safety hazard. This is a WoF and RWC hard failure point that some sellers conceal with fresh underseal paint.

How much does it cost to fix on a Hyundai Elantra?

$800 to $3,200 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 Hyundai Elantra years are affected?

Our research records this fault on the 2011–2015 Hyundai Elantra. 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.