Other driver assistance problem on the 2018 Nissan Leaf
3 crashes 3 of the 15 reports for this failure mention a crash, a fire, an injury or a death. Those are the owner's words on the complaint form, not a verified finding, and one report can mention more than one.
Only 7 reports for this mode came with an odometer reading, which is too few for percentiles to mean anything. The page is here because someone linked to it; treat the figures as anecdotes, and see the full report for this year instead.
When other driver assistance problem gets reported
There are 15 reports of other driver assistance problem on the 2018 Nissan Leaf, 7 with a mileage attached. That is too few to place the failure on the odometer with any confidence.
A part like this is normally expected to survive 45,000 miles. It is the 1st most-reported problem on this model year.
The whole distribution
| 10th | 25th | Median | 75th | 90th |
|---|---|---|---|---|
| — | — | 18,000 miles | — | — |
Read the 10th percentile as “one report in ten arrived this early”. Exact figures are shown in this table because it is the table of record; everywhere else on the site they are rounded to the precision the sample can carry.
What a percentile can and cannot tell you here
These five numbers describe the readings owners gave, in order. The median is the middle one: half the reports arrived below it. The 10th and 90th are the edges of the bulk of the distribution, and the distance between them is the part worth reading. A tight spread — say 70,000 to 95,000 miles — points at something that wears out on a schedule, and the schedule is knowable. A wide one, 20,000 to 190,000, points at a fault that hits some cars and never troubles others, which means the mileage on the listing in front of you tells you very little about your odds.
What these figures are not is a survival curve. Every reading here comes from a car whose owner filed a complaint, so the sample contains only failures: it cannot say what share of the fleet made it past 150,000 miles untouched, because those owners had nothing to report. Nor is the mileage the moment of failure — it is the odometer reading as recalled at the time of filing, which may be weeks later and is sometimes rounded to the nearest ten thousand by the person typing it.
Percentiles are shown at all only once 8 readings exist for the vehicle and mode. Below that the middle of a handful of numbers is noise wearing a decimal point, so the figures are withheld rather than dressed up.
What happens, and what it costs
Of these reports, 3 a crash is mentioned. Owners write their own complaints and the agency does not verify them, so read this as what the reports say happened rather than as a confirmed count.
Putting it right typically runs $250–$1,800 at an independent US shop. That range is an editorial estimate held in this site's failure-mode catalogue, not a figure from NHTSA, and it is a repair cost rather than a diagnosis cost.
The same failure on other years
The same failure is reported on 6 model years of this car. It shows up earliest on the 2021, at a median of 15,000 miles, and latest on the 2023 at 175,000 miles.
By volume the 2018 is the worst of them, which makes this a problem of this specific year rather than of the model as a whole.
If one year stands out to the left, that is the year to avoid; if the whole line sits at a similar mileage, this is wear rather than a defect in one production run.
Tick median reported mileage Solid middle half of reports Faint 10th to 90th percentile Colour how bad the failure is when it happens
What owners wrote
Verbatim from NHTSA complaint narratives, trimmed for length. The mileage is the one the owner gave.
When the brakes are applied moderately at around 40mph to slow down, and if a wheel go on top of some bumps or pot holes, car seems to loose braking power, brake padel drop about 1 inch, have to pedal hard to get the brakes back. At one time I saw a message on dashboard "not available" which I was not able to read and confirm, as this happened in a panic situation. This is occational but has happened to be 4 - 5 times now. My guess is car try to apply regenerative brakes first, if that cannot work due to excessive, bump / pot-hole on the road, it give up, and as a result, car loose braking power for 1-2 seconds. This 2 seconds can be life and death in an emergency braking situation. I took the car to dealer, and they said, no issues found. This problem is hard to reproduce, but can be reproduced. This happened in local roads with 45mph speed limit. One time when there was rough road due to construction. Another time when one tire was going on top of road dividers which are about 1 inch tall and 1 foot apart, it had many of these next to each other, when I was applying brake.
While driving forward, the vehicle suddenly, unexpectedly and violently applies the brakes without any driver input whatsoever! There are no other vehicles or pedestrians in the vicinity at the time. This sudden braking problem began on or about 5/15/18 and happened on several occasions after that. Twice while entering the underground parking garage at an office building and twice while driving on a city street. Vehicle has been at the local nissan dealer for over a week but neither the dealership nor the manufacturer apparently has any idea how to fix the problem. They think that there is a fault in the automatic emergency braking system. The service manager told me that other instances of the same issue have been reported to nissan. The salesperson indicated that there were 4 other similar cases at their dealership alone.they also will not let us take the vehicle home without signing a release of liability document. The obvious concern is that the emergency braking system will again randomly activate while traveling at a higher speed and cause an accident resulting in serious property damage and injuries!
Also reported on the 2018 Nissan Leaf
Other brake problem
Other electrical problem
Other engine problem
Seat belt or retractor failure
Other fuel system problem
No-start or intermittent start failure
How far this goes
This page is kept out of search results because 15 reports is not enough to publish percentiles from. It stays reachable because somebody looking at this exact car would rather see the reports than be told there are none.
Complaints are voluntary, so 15 is a floor and not a count of affected cars. Mileages are typed in by owners and cluster on round numbers. And the mode itself is assigned by software reading the complaint text, which is reliable in bulk and fallible one report at a time.
Questions this page answers
At what mileage does other driver assistance problem happen on the 2018 Nissan Leaf?
Across 7 owner reports that included an odometer reading, half were filed by 20,000 miles. A quarter were filed before — and a quarter after —. These are the mileages owners reported when they complained, not a prediction for any individual car.
How common is other driver assistance problem on the 2018 Nissan Leaf?
15 reports have been filed with NHTSA, about 0.6 per 1,000 vehicles. Complaints are voluntary, so this is a floor rather than a count of affected cars.
What this is and is not. These are the mileages at which owners chose to complain to a federal agency, which is not the same as the mileage at which the part fails on every car. It skews toward failures that happened outside warranty, cost real money, or frightened someone. It is still the only public dataset that carries failure mileage at all, and the shape of a few hundred readings is informative even when a single one is not. Methodology · JSON · this failure on other cars
Source Owner complaints and recall records published by the US National Highway Traffic Safety Administration, model years 1996–2027 Figures rebuilt Published by AtWhatMileage How every figure is computed