MajorCommonTransmission

Daihatsu Tanto: D-CVT Drive Belt Judder and Secondary Pulley Wear

D-CVT Drive Belt Judder and Secondary Pulley Wear is a common transmission fault on the Daihatsu Tanto on the 2007–2019 cars, and we rate it major. Putting it right costs $2,800 to $5,500 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 11 documented faults on the Daihatsu Tanto.

Vehicle: Daihatsu Tanto
Years: 2007–2019
Fuel: petrol
Gearbox: cvt
System: Transmission

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

All Daihatsu Tanto faults11 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

The Tanto's belt-type D-CVT suffers progressive wear of the secondary (driven) pulley face and drive belt due to fluid degradation and thermal cycling. As the pulley sheave surface loses its finish, the belt micro-slips under load, causing a characteristic shuddering judder during low-speed acceleration from rest. Advanced wear causes complete belt slip, loss of drive, and internal pulley scoring that requires full unit replacement.

What you would notice

Shudder or judder vibration felt through the chassis during gentle acceleration from a standstill at low speed
Slipping sensation or engine over-rev without corresponding vehicle acceleration under moderate throttle
CVT warning light illumination (yellow transmission warning on instrument cluster)
Burnt smell from the transmission area after driving in stop-start traffic

How to check it

Where to look. CVT unit mounted transversely on the left side of the engine, bolted directly to the KF engine block

Check CVT fluid colour and smell — brown or burnt fluid indicates thermal degradation.
With vehicle on a level surface, check fluid level using the dipstick with engine warm and idling.
Perform a static stall test: with brake fully applied, note rpm at full throttle — excessively high rpm indicates belt slip.
Scan for CVT-specific fault codes including P0731-P0736 ratio error codes.
Listen for shudder vibration through the seat base and floor under gentle acceleration from 5 to 30 km/h.

What it costs to put right

$2,800 to $5,500 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

“Has the CVT fluid ever been changed, and if so at what mileage?”
“Is there any shuddering or vibration when pulling away from a stop?”
“Has the CVT warning light ever illuminated?”

Now check the Daihatsu Tanto 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.

Daihatsu Tanto buyer questions

Is d-cvt drive belt judder and secondary pulley wear serious on a Daihatsu Tanto?

We rate it major and common on the Daihatsu Tanto. The Tanto's belt-type D-CVT suffers progressive wear of the secondary (driven) pulley face and drive belt due to fluid degradation and thermal cycling. As the pulley sheave surface loses its finish, the belt micro-slips under load, causing a characteristic shuddering judder during low-speed acceleration from rest. Advanced wear causes complete belt slip, loss of drive, and internal pulley scoring that requires full unit replacement.

How much does it cost to fix on a Daihatsu Tanto?

$2,800 to $5,500 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 Daihatsu Tanto years are affected?

Our research records this fault on the 2007–2019 Daihatsu Tanto. 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?

Check CVT fluid colour and smell — brown or burnt fluid indicates thermal degradation. With vehicle on a level surface, check fluid level using the dipstick with engine warm and idling. Perform a static stall test: with brake fully applied, note rpm at full throttle — excessively high rpm indicates belt slip. Scan for CVT-specific fault codes including P0731-P0736 ratio error codes. Listen for shudder vibration through the seat base and floor under gentle acceleration from 5 to 30 km/h. Look here: CVT unit mounted transversely on the left side of the engine, bolted directly to the KF engine block