MajorCommonTransmission

Subaru Stella: i-CVT low-speed shudder and ageing-fluid wear (inferred from Subaru CVT pattern)

i-CVT low-speed shudder and ageing-fluid wear (inferred from Subaru CVT pattern) is a common transmission fault on the Subaru Stella on the 2006–2011 cars, and we rate it major. Putting it right costs $200 to $4,500 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 10 documented faults on the Subaru Stella.

Vehicle: Subaru Stella
Years: 2006–2011
Fuel: petrol
Gearbox: cvt
System: Transmission

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

All Subaru Stella faults10 documented faults on this model

What you are looking at

No photograph available

We do not hold a verified photograph for this fault yet. We would rather show none than show a picture of something else.

What goes wrong

Most Stellas were sold with Subaru's i-CVT continuously variable transmission (the supercharged grade using the 7-speed sportshift version shared with the R2). Across Subaru's CVT range the most common complaint is a low-speed shudder or judder felt on gentle take-off and light throttle, generally traced to CVT fluid that has aged and lost its friction additives rather than a hard mechanical failure; a fresh fluid change often clears it if caught early. On a light kei car with an unknown fluid history the small transmission works hard, and a unit that has been driven while shuddering can wear internally and become expensive because replacement relies on scarce used kei CVTs. This entry is inferred from the general Subaru CVT pattern rather than confirmed Stella-specific failure reports, so it is seeded for buyer awareness; the practical safeguard is a careful cold-and-warm test drive and checking the CVT fluid history.

What you would notice

Shudder or judder felt through the car pulling away from a stop
Vibration or hesitation under light throttle at low speed
Delayed or jerky pick-up when moving off
Symptom eases after a fluid change then returns if the unit is worn

How to check it

Where to look. i-CVT transaxle and its fluid, driving the front (or all four) wheels

Test-drive from cold and again once warm, pulling away gently from several standing starts on a flat road, and feel for shudder through the seat and floor at low speed. Ask when the CVT fluid was last changed and whether the correct Subaru fluid was used; a car with no fluid record or an audible judder should be inspected by a transmission specialist and priced cautiously, since a worn kei CVT is costly to replace relative to the car's value.

What it costs to put right

$200 to $4,500 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

“When was the CVT fluid last changed and was the correct fluid used?”
“Do you feel any shudder or vibration pulling away from a stop?”
“Has the transmission ever been serviced, repaired or replaced?”
“Is there any transmission service history from Japan or since import?”

Now check the Subaru Stella 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 the sources below. The inspection instructions and the cost estimate are KickTyres’ own interpretation of them.

Subaru Stella buyer questions

Is i-cvt low-speed shudder and ageing-fluid wear (inferred from subaru cvt pattern) serious on a Subaru Stella?

We rate it major and common on the Subaru Stella. Most Stellas were sold with Subaru's i-CVT continuously variable transmission (the supercharged grade using the 7-speed sportshift version shared with the R2). Across Subaru's CVT range the most common complaint is a low-speed shudder or judder felt on gentle take-off and light throttle, generally traced to CVT fluid that has aged and lost its friction additives rather than a hard mechanical failure; a fresh fluid change often clears it if caught early. On a light kei car with an unknown fluid history the small transmission works hard, and a unit that has been driven while shuddering can wear internally and become expensive because replacement relies on scarce used kei CVTs. This entry is inferred from the general Subaru CVT pattern rather than confirmed Stella-specific failure reports, so it is seeded for buyer awareness; the practical safeguard is a careful cold-and-warm test drive and checking the CVT fluid history.

How much does it cost to fix on a Subaru Stella?

$200 to $4,500 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 Subaru Stella years are affected?

Our research records this fault on the 2006–2011 Subaru Stella. 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.