MajorCommonSuspension

Lexus NX: Front Lower Arm Inner Bush Failure

Front Lower Arm Inner Bush Failure is a common suspension fault on the Lexus NX on the 2014–2021 cars, and we rate it major. Putting it right costs $600 to $1,400 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 22 documented faults on the Lexus NX.

Vehicle: Lexus NX
Years: 2014–2021
System: Suspension

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

All Lexus NX faults22 documented faults on this model

What you are looking at

What goes wrong

The front lower control arm inner pivot bushes on AGZ10, AGZ15, and AYZ15 NX platforms are rubber-bonded press-fit items that degrade with age, mileage, and UV exposure in NZ/AU conditions. Worn inner bushes allow the lower arm to shift fore-aft under braking and cornering loads, causing vague steering, a pulling sensation to one side, and clunking over bumps or during braking. The issue is frequently misdiagnosed as a wheel alignment problem until bush play is confirmed on a hoist. Lower arm assembly replacement is often more cost-effective than pressing individual bushes given labour overlap.

What you would notice

Steering pull to one side that varies with road camber
Clunking or knocking from front suspension over bumps or during braking
Vague or imprecise steering feel
Wheel alignment cannot be corrected to within manufacturer specification
Uneven front tyre wear, particularly on the inner shoulder

How to check it

Where to look. Front subframe, lower control arm inner pivot bush, both sides

Any visible bush movement or audible clunk confirms failure.
Inspect for cracking or separation of the rubber element at the inner pivot.
Check tyre wear for signs of sustained misalignment.
Request any recent alignment records.
If a workshop inspection is possible: With the vehicle on a hoist, grasp each front lower arm and attempt to move it fore-aft while an assistant applies and releases the footbrake.

Parts involved: Ball joint.

What it costs to put right

$600 to $1,400 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 any front suspension clunking or knocking been investigated or repaired?”
“Have the front lower control arm bushes been inspected or replaced?”
“Has there been a persistent steering pull despite wheel alignment adjustments?”
“When were the front tyres last replaced and was there unusual inner wear?”

Now check the Lexus NX 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.

Lexus NX buyer questions

Is front lower arm inner bush failure serious on a Lexus NX?

We rate it major and common on the Lexus NX. The front lower control arm inner pivot bushes on AGZ10, AGZ15, and AYZ15 NX platforms are rubber-bonded press-fit items that degrade with age, mileage, and UV exposure in NZ/AU conditions. Worn inner bushes allow the lower arm to shift fore-aft under braking and cornering loads, causing vague steering, a pulling sensation to one side, and clunking over bumps or during braking. The issue is frequently misdiagnosed as a wheel alignment problem until bush play is confirmed on a hoist. Lower arm assembly replacement is often more cost-effective than pressing individual bushes given labour overlap.

How much does it cost to fix on a Lexus NX?

$600 to $1,400 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 Lexus NX years are affected?

Our research records this fault on the 2014–2021 Lexus NX. 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?

Any visible bush movement or audible clunk confirms failure. Inspect for cracking or separation of the rubber element at the inner pivot. Check tyre wear for signs of sustained misalignment. Request any recent alignment records. If a workshop inspection is possible: With the vehicle on a hoist, grasp each front lower arm and attempt to move it fore-aft while an assistant applies and releases the footbrake. Look here: Front subframe, lower control arm inner pivot bush, both sides