2022–2025pre-faceliftpre-faceliftEV RWD 60kWhElectricSee faults & what to checkKickTyres illustration, not a photograph.Tesla Model Y: common faults & what to check
Thinking about buying a used Tesla Model Y (2020–2025) in New Zealand? We've documented 15 known faults for this model spanning electrical, cooling, suspension, and transmission. Each researched and verified before it's published. The most serious issues here are rated critical. Every one is listed below with its symptoms and repair cost, and each has its own page with where to look and what to ask the seller. Free, no account needed.
Check this exact Tesla Model Y
- Odometer history
- Money owing
- Reported stolen
- Ownership history
15
Critical
$400–$1,400
9
Which Tesla Model Y are you looking at?
Electric
2022–2025pre-faceliftpre-faceliftEV RWD 60kWhElectricSee faults & what to checkKickTyres illustration, not a photograph.
2022–2025pre-faceliftpre-faceliftEV Long Range/Performance 75-82kWhElectricSee faults & what to checkKickTyres illustration, not a photograph.Now narrow it to the engine
Start your free check on this Tesla Model Y
Pick the engine above first: the Model Y came with 4, and without it the report has to show all of their faults. Pick the engine
Can't confirm for this car
Tesla Model Y
Nothing has been narrowed yet, so nothing below is a claim about a particular car. Pick a year and an engine to see which faults apply.
Tell us the engine, or check the engine code on the car, before relying on this.
matched on no vehicle context
What to look out for
Serious issue
Locate and inspect the 12V battery date code in the frunk.
12V auxiliary battery failure — no-start condition
Model Y shares the same 12V auxiliary battery architecture as Model 3. The small lead-acid (or early lithium variant) battery powers all low-voltage control circuits including the HV contactors. Battery failure leaves the car completely inert — the HV pack is isolated and inaccessible. Failure typically occurs between 3–5 years of age and is accelerated by the car's frequent self-waking events (Sentry Mode, app polling, software updates) which cycle the 12V battery hundreds of times more than a conventional car battery. Early replacement is strongly recommended as preventive maintenance on any used Model Y.
What you would notice
Costly issue
Run climate on heat in cool conditions and verify outlet air temperature.
Heat pump refrigerant line fitting corrosion
Identical mechanism to the Model 3 fault but more prevalent on Model Y because the heat pump is standard across all variants. Aluminium refrigerant line fittings corrode at the firewall bracket connection, causing gradual refrigerant loss and eventual loss of cabin heating. NZ coastal and high-humidity environments accelerate corrosion at the dissimilar-metal joint. Tesla has replaced fittings under warranty on affected vehicles. This is the single most reported Model Y mechanical fault in NZ and AU owner communities.
What you would notice
Costly issue
Infrared temperature check of all four wheels immediately after a 10-minute mixed-speed test drive is the most reliable diagnostic.
Rear brake caliper seizure from infrequent use
The Model Y shares the Model 3's regen-priority brake architecture and suffers the same rear caliper seizure failure mode. The heavier kerb weight of the Model Y (approximately 2,003 kg vs 1,847 kg for Model 3 LR) places greater thermal stress on the calipers during the infrequent hard-braking events that do engage friction brakes, accelerating piston and seal degradation once initial seizure begins. NZ/AU fleet data from independent Tesla workshops indicates rear caliper service is the single most common workshop job on Model Y vehicles past three years of age.
What you would notice
Costly issue
Inspect frunk floor and firewall for oily UV-fluorescent residue indicating refrigerant loss.
Heat pump refrigerant leak — range and heat loss
The Model Y has used a heat pump and octovalve system since launch in 2020, making it susceptible to refrigerant leaks at the octovalve rotary seals, compressor shaft seal, and high-pressure line unions. Failed heat pumps revert to inefficient PTC resistive heating, cutting real-world range by up to 25% in cold weather. The octovalve is a complex 8-port valve unique to Tesla and expensive to source outside the Tesla service network. Australian and South Island NZ deliveries have generated the highest complaint volumes due to colder operating conditions revealing the fault earlier.
What you would notice
Costly issue
Check ball joint boot integrity visually — any cracking or missing boot means replacement is imminent.
Front lower control arm ball joint premature wear
Identical ball joint failure mode to Model 3 but more prevalent on Model Y due to the higher kerb weight (2,003–2,207 kg). The non-serviceable press-fit ball joint within the lower control arm wears out prematurely, requiring full control arm replacement. NHTSA opened a preliminary investigation PE22-008 into Model Y front suspension following multiple complaints of ball joint separation events. Tesla Australia and NZ workshops have seen elevated rates on vehicles used in urban stop-start conditions where repeated tight steering cycles accelerate boot wear. Buyers should treat any vehicles over 60,000 km as candidates for inspection.
What you would notice
Costly issue
Open the frunk and locate the condensate drain exit point near the passenger-side firewall.
Heat pump condensate drain blockage
The octovalve-based heat pump system introduced on 2021+ Model Y routes refrigerant through the front underhood heat exchanger. The condensate drain port at the base of the heat pump module can block with debris, biological growth, or ice in humid/cool climates. Blocked drainage causes water to accumulate inside the HVAC plenum and can overflow into the frunk cavity where high-voltage contactors and 12V electronics are mounted, risking corrosion and component damage. New Zealand coastal humidity accelerates biological fouling of the drain port.
What you would notice
Tesla Model Y service schedule
Tesla Model Y (First Generation) · 2020–2026 · Standard Range RWD - 60kWh Battery
Due by distance
- 40,000 km
Depending on how it has been driven, the original tyres may be wearing by now - check all four for even tread.
- 80,000 km
Inspect the cabin air filter and think about a professional air conditioning sanitisation to keep the interior smelling fresh.
- 120,000 km
Get a specialist to check the suspension bushings and steering components for play, which is normal at this sort of mileage.
Tesla Model Y (First Generation) · 2020–2026 · Long Range AWD - 75kWh Battery
Due by distance
- 40,000 km
Inspect the cabin air filter and budget for a new set of tyres - instant torque wears rubber a little faster than a petrol car does.
- 80,000 km
Worth a professional alignment check and an inspection of the suspension, control arm bushings included, given how heavy the car is.
- 120,000 km
Have the battery health assessed through the service menu or an independent diagnostic tool, so you know the range is holding up.
Tesla Model Y (First Generation) · 2020–2026 · Performance AWD - High Output Dual Motor
Due by distance
- 40,000 km
The original performance tyres often need replacing by this point, thanks to the dual motors' torque.
- 80,000 km
Standard interval for a new cabin air filter and a moisture test on the brake fluid.
- 120,000 km
The cooling system is normally flushed here, along with a general look over the suspension.
See all 15 documented issues
Depends on which engine this Tesla Model Y has — 15
Engine, transmission & cooling
01Heat pump refrigerant leak — range and heat loss
Can't confirm for this car02Heat pump system faults — loss of heating or air conditioning
Can't confirm for this car
Can't confirm for this car
All Model Ys use the heat pump and Octovalve thermal system. The EXV software fault behind US recall 22V-050 (valve left open, refrigerant trapped, compressor shuts down, no cabin heat in cold weather) was fixed over the air in early 2022, before most NZ deliveries, but confirm firmware is current. Hardware failures of the compressor, Octovalve cartridge or refrigerant sensors still occur occasionally and are expensive because the system is Tesla-specific. Symptoms are no heat in winter, no AC in summer, or a climate fault alert.
Symptoms to notice
What to check
Ask the seller
03Heat pump refrigerant line fitting corrosion
Can't confirm for this car04Rear half-shaft CV joint wear and clicking
Can't confirm for this car
Can't confirm for this car
The Model Y Long Range and Performance share the same rear motor and half-shaft architecture as the Model 3. The heavier vehicle weight (approximately 200 kg more than Model 3 LR) imposes greater drivetrain loading on the CV joints during torque application, and the higher centre of gravity increases lateral joint loading during cornering under power. Inboard tripod CV joint wear produces clicking from approximately 60,000 km in Performance variants and 80,000 km+ in LR variants. CV boot failure is an earlier and more frequent issue, with the boot rubber degrading from motor heat in the confined rear motor bay.
Example of the part — not this vehicleThe rubber CV boot on a driveshaft — this is the part that splits and throws grease.
Symptoms to notice
What to check
Ask the seller
05Heat pump condensate drain blockage
Can't confirm for this carElectrical
0112V auxiliary battery failure — no-start condition
Can't confirm for this car02Traction battery degradation — reality check and how to verify
Can't confirm for this car
Can't confirm for this car
Model Y packs (LFP in RWD, NMC in Long Range/Performance) show the same durable pattern as Model 3: a 5-10% capacity dip early, then a long plateau; outright failure is rare and warranted for 8 years/160,000 km to 70% capacity. A nervous buyer's best defence is measurement: a state-of-health check or a full-charge range comparison takes minutes and removes the guesswork. Out-of-warranty full pack replacement is the worst case, but module-level and contactor repairs by NZ EV specialists are increasingly available at a fraction of that.
Symptoms to notice
What to check
Ask the seller
03Tow hitch wiring connector corrosion
Can't confirm for this car
Can't confirm for this car
Model Y vehicles fitted with the Tesla tow hitch show wiring connector corrosion at the 7-pin trailer socket, particularly in NZ coastal and high-humidity environments. Corrosion causes trailer light faults, failure of the tow hitch power circuit, and intermittent tow functionality loss. Dielectric grease is often omitted on installation, accelerating oxidation of the pin contacts.
Symptoms to notice
What to check
Ask the seller
Body, brakes, suspension & interior
01Front lower control arm ball joint premature wear
Can't confirm for this car
Can't confirm for this car
Identical ball joint failure mode to Model 3 but more prevalent on Model Y due to the higher kerb weight (2,003–2,207 kg). The non-serviceable press-fit ball joint within the lower control arm wears out prematurely, requiring full control arm replacement. NHTSA opened a preliminary investigation PE22-008 into Model Y front suspension following multiple complaints of ball joint separation events. Tesla Australia and NZ workshops have seen elevated rates on vehicles used in urban stop-start conditions where repeated tight steering cycles accelerate boot wear. Buyers should treat any vehicles over 60,000 km as candidates for inspection.
Example of the part — not this vehicleA separated lower ball joint: the control arm has dropped and the wheel has splayed out under the guard.
Symptoms to notice
What to check
Ask the seller
02Rear brake caliper seizure from infrequent use
Can't confirm for this car03Front subframe loose mounting bolts causing suspension clunk
Can't confirm for this car
Can't confirm for this car
A Tesla TSB documented that front subframe mounting bolts on the Model Y can be insufficiently torqued from the factory. Bolts loosen in service and produce a pronounced clunking noise from the front of the vehicle. If not corrected, loose subframe bolts alter steering geometry and produce unsafe handling characteristics. Workshop correction involves re-torquing or replacing bolts with thread-lock compound applied.
Symptoms to notice
What to check
Ask the seller
04Control arm creaks and suspension knocks (front upper arms, fore links, rear links)
Can't confirm for this car
Can't confirm for this car
The Model Y shares the Model 3's front suspension and inherits the same faults: front upper control arm ball joints creak once water washes out the grease, and fore-link bushings knock over bumps. Being heavier, the Y also wears rear suspension links and stabiliser end links sooner, giving clunks from the back on rough roads. Tesla's urethane reseal bulletin (SB-20-31-006) applies, and arms are cheap aftermarket parts fitted easily by any competent independent workshop.
Example of the part — not this vehicleA separated lower ball joint: the control arm has dropped and the wheel has splayed out under the guard.
Symptoms to notice
What to check
Ask the seller
05Door and tailgate seal water ingress
Can't confirm for this car
Can't confirm for this car
Model Y shares the frameless window design and early production seal quality issues of the Model 3, with the additional failure point of the large panoramic glass tailgate. The tailgate seal perimeter — particularly the lower corners — can separate from its adhesive channel, allowing water ingress into the rear cargo area and the underfloor storage well. Water pooling in the rear cargo floor well sits directly above the HV battery rear module junction, and prolonged water accumulation can accelerate corrosion of the floor pan sheet metal and battery cover fasteners.
Symptoms to notice
What to check
Ask the seller
06Road noise, wind noise and panel fit niggles (cosmetic)
Can't confirm for this car
Can't confirm for this car
NZ/AU Model Ys are Shanghai-built, so panel fit is better than early US Model 3s, but the Y is known for high road noise on NZ chip seal, wind whistle around the front doors and glass roof, and occasional misaligned boot lids or doors that rub. Paint remains prone to stone chips. All cosmetic — use it to negotiate, and check misalignment isn't hiding crash repair. The 2025 Juniper facelift specifically targeted noise suppression and ride quality.
Symptoms to notice
What to check
Ask the seller
07Juniper: early-build trim and software teething issues
Can't confirm for this car
Can't confirm for this car
The Juniper facelift (NZ from mid-2025) so far has a clean mechanical record — suspension, NVH and ride were specifically reworked. Early-build owner reports centre on minor items: trim rattles around the new light bar and rear screen, occasional software glitches with the new front camera and parking views, all addressed under the 4-year vehicle warranty or via OTA updates. On a near-new car the main check is simply that all warranty coverage transfers and no accident repair has occurred.
Symptoms to notice
What to check
Ask the seller
Tesla Model Y faults in detail
What these repairs cost on other cars
Some of the Tesla Model Y’s documented faults are repairs other models share. Each page lists the documented NZ cost for every model it affects.
Other Tesla models
Tesla Model Y buyer questions
Is the Tesla Model Y reliable?
Like any used car, it depends on the specific example and its service history. Across the 15 documented faults for the Tesla Model Y, the recurring problem areas are electrical, cooling, and suspension. A Tesla Model Y 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 Tesla Model Y?
We've catalogued 15 known faults for the Tesla Model Y, covering electrical, cooling, and suspension. All 15 are written out in full on this page, with the symptoms to notice, what to inspect, and typical repair costs for each. Free to read, no account needed.
How much do repairs cost on a Tesla Model Y?
Most single repairs on the Tesla Model Y fall between $400–$1,400 at NZ independent-workshop rates. Some of the 15 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 Tesla Model Y?
Yes. A Tesla Model Y 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 $24.90 far less than the cost of missing one of the faults on this page.