Thinking about buying a used Subaru B9 Tribeca (2005–2014) in New Zealand? We've documented 8 known faults for this model spanning suspension, transmission, engine, and electrical. Each researched and verified before it's published. The most serious issues here are rated critical. Two are set out in full below — the rest, with the symptoms, repair costs and checks for each, are free with an account.
8
Documented faults
Critical
Most serious
$450–$1,200
Typical repair
5
Systems covered
Known Subaru B9 Tribeca faults
Every fault below is documented specifically for this model — researched and verified before it’s published.
01Front Lower Control Arm Ball Joint Wear
CriticalCommonSuspension $600–$1,400 to fix
The front lower control arm ball joints on the Tribeca are a known wear item that deteriorates on higher-mileage examples, particularly in vehicles used in areas with gravel roads or where the front suspension has been subjected to kerb impacts. Worn ball joints introduce vague steering, clunking over bumps, and in advanced cases create an MOE WOF rejection point due to measurable play; complete ball joint failure poses a serious safety risk as it causes immediate loss of steering control.
Symptoms to notice
Clunking or knocking noise from the front suspension when traversing speed humps or rough road surfaces
Vague or imprecise steering feel with the wheel wandering at highway speed
Vibration or shimmy felt through the steering wheel at low speeds over uneven surfaces
What to check
Inspect the rubber boot for cracking or grease weeping. Listen for clunking when driving slowly over speed bumps with windows open. The ball joint is integral to the lower control arm on most Tribeca variants and requires arm replacement. If a workshop inspection is possible: With the vehicle on a hoist, grip the wheel at 6 and 12 o'clock and apply vertical force to check for vertical play in the lower ball joint.
Where to look: Base of front lower control arm at the steering knuckle pivot, both left and right sides
Ask the seller
“Has the front suspension ever been inspected for ball joint wear, and were any components replaced?”
“Does the car make any clunking noise over bumps or when turning at low speed?”
“Has the vehicle ever been used on gravel roads regularly or been involved in a kerb strike?”
02Air Conditioning Compressor Clutch Failure
MinorOccasionalElectrical $350–$1,100 to fix
The Denso air conditioning compressor fitted to the Tribeca is subject to clutch engagement failure, where the electromagnetic clutch coil or clutch plate wears to the point that the compressor shaft no longer engages reliably. This results in intermittent or total loss of cooling; in some cases the clutch plate seizes partially, causing a continuous squeal and belt wear. Clutch failure can occur independently of the compressor internals, allowing clutch-only replacement in many cases.
Symptoms to notice
Air conditioning blowing ambient temperature air despite the system being switched on and refrigerant charge being confirmed correct
Intermittent cold air that works on some days but not others, particularly in hot weather when demand is highest
Squealing noise from the engine belt area that ceases when the air conditioning is switched off
What to check
With the engine running and air conditioning switched on at maximum, observe the compressor clutch pulley at the front of the compressor — the central hub should engage and spin with the outer pulley. Listen for a single click on engagement and steady operation without slipping noise. Check for burnt smell near the compressor. If a workshop inspection is possible: Measure clutch coil resistance with a multimeter; Denso units typically read 3–4 ohms.
Where to look: Front of the engine bay, compressor mounted low on the right side of the engine and belt-driven from the serpentine belt
Ask the seller
“Does the air conditioning cool consistently, or does it cut in and out intermittently?”
“Has the air conditioning system been regassed or serviced recently, and was the compressor inspected at that time?”
“Is there any noise from the engine bay area when the air conditioning is switched on?”
TransmissionMajor
EngineMajor
TransmissionMajor
EngineMajor
SuspensionMajor
Fluid LeaksMinor
6 more documented faults on the Subaru B9 Tribeca
Symptoms, what to check, where to look and what to ask the seller — for every fault above. Free with an account, no card needed. One account covers one vehicle, so make it the car you’re actually looking at.
This page covers the model. Enter the plate of the actual car you’re looking at and see its year, engine, safety rating and register flags — free, no account needed.
Like any used car, it depends on the specific example and its service history. Across the 8 documented faults for the Subaru B9 Tribeca, the recurring problem areas are suspension, transmission, and engine. A Subaru B9 Tribeca with a full service history and no signs of the issues listed on this page can be a sound buy but each one needs to be checked individually before you commit.
What are the most common problems with a used Subaru B9 Tribeca?
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We've catalogued 8 known faults for the Subaru B9 Tribeca, covering suspension, transmission, and engine. Two are written out in full on this page. The rest — with the symptoms to notice, what to inspect, and typical repair costs for each — are free once you create an account.
How much do repairs cost on a Subaru B9 Tribeca?
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Most single repairs on the Subaru B9 Tribeca fall between $450–$1,200 at NZ independent-workshop rates. Some of the 8 documented faults cost less and a few cost considerably more, and no one car needs them all. Knowing which ones to look for before you view is what lets you negotiate the price down or walk away.
Should I get a pre-purchase inspection on a Subaru B9 Tribeca?
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Yes. A Subaru B9 Tribeca inspection focused on its known weak points is the single best way to avoid an expensive mistake. KickTyres gives you a guided, model-specific inspection plus a market valuation and negotiation figure for $17.90 far less than the cost of missing one of the faults on this page.