MajorCommonEngine

Honda Jazz: i-STOP Starter Ring Gear Accelerated Wear

i-STOP Starter Ring Gear Accelerated Wear is a common engine fault on the Honda Jazz on the 2014–2020 cars, and we rate it major. Putting it right costs $650 to $2,200 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 51 documented faults on the Honda Jazz.

Vehicle: Honda Jazz
Engine: 1.5L
Years: 2014–2020
Fuel: petrol
System: Engine

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

All Honda Jazz faults51 documented faults on this model

What you are looking at

No photograph available

We do not hold a verified photograph of the Starter motor yet. We would rather show none than show a picture of a different part.

What goes wrong

Honda's i-STOP idle-stop system on the GK Jazz L15B engine restarts the engine by injecting fuel into a specific cylinder and firing it, then engaging the starter motor simultaneously. This dual-restart method causes the starter pinion to engage the ring gear under different velocity and load conditions compared to a conventional ignition start. The combined mechanical stress results in accelerated ring gear tooth wear, with pitting and rounding of tooth edges typically appearing before 80,000 km on vehicles used primarily in city driving where i-STOP activates dozens of times per day. A worn ring gear produces a grinding or scraping noise at engine restart, and eventually causes mis-engagement resulting in a harsh clunk and failed start event. The starter motor bendix drive is also worn prematurely. Honda revised the i-STOP calibration in later software versions to reduce engagement frequency.

What you would notice

Grinding or scraping noise specifically when engine restarts from i-STOP (not from a key start)
Harsh clunk or shudder when i-STOP restarts the engine
Occasional failed restart requiring driver to push brake pedal again
Check Engine light with starter circuit or crankshaft position fault codes

How to check it

Where to look. Flywheel/flexplate ring gear at rear of engine, accessible from underneath after removing starter motor

In a traffic environment, allow i-STOP to activate at least 10 times and listen carefully at each restart event for grinding or harsh mechanical engagement noise. This noise is absent on a conventional key start because the engine already fires before the starter fully engages. Check if owner has disabled i-STOP via the dashboard button and ask why. Inspect starter motor operation and verify software version is current.

Parts involved: Starter motor.

What it costs to put right

$650 to $2,200 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 i-STOP system ever been disabled or faulted?”
“Has the starter motor or ring gear ever been replaced?”
“Has the vehicle software been updated at a Honda dealer?”
“Does the engine make any noise when restarting from idle-stop?”

Now check the Honda Jazz 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.

Honda Jazz buyer questions

Is i-stop starter ring gear accelerated wear serious on a Honda Jazz?

We rate it major and common on the Honda Jazz. Honda's i-STOP idle-stop system on the GK Jazz L15B engine restarts the engine by injecting fuel into a specific cylinder and firing it, then engaging the starter motor simultaneously. This dual-restart method causes the starter pinion to engage the ring gear under different velocity and load conditions compared to a conventional ignition start. The combined mechanical stress results in accelerated ring gear tooth wear, with pitting and rounding of tooth edges typically appearing before 80,000 km on vehicles used primarily in city driving where i-STOP activates dozens of times per day. A worn ring gear produces a grinding or scraping noise at engine restart, and eventually causes mis-engagement resulting in a harsh clunk and failed start event. The starter motor bendix drive is also worn prematurely. Honda revised the i-STOP calibration in later software versions to reduce engagement frequency.

How much does it cost to fix on a Honda Jazz?

$650 to $2,200 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 Honda Jazz years are affected?

Our research records this fault on the 2014–2020 Honda Jazz. 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.