Exhaust leak or fumes in the cabin on the 2000 Honda Civic
When exhaust leak or fumes in the cabin gets reported
Owners of the 2000 Honda Civic report exhaust leak or fumes in the cabin at a median of 130,000 miles. A quarter of the reports come in before 75,000 miles and a quarter after 135,000 miles, from 8 reports that carried an odometer reading.
A part like this is normally expected to survive 100,000 miles. It is the 9th most-reported problem on this model year.
The mileage distribution
The reported range runs from 70,000 miles at the tenth percentile to 140,000 miles at the ninetieth, a spread of 69,600 miles across the middle 80% of reports.
When the reports scatter this far, the mileage is telling you about how these cars were driven more than about the part itself.
0% of the dated reports were filed under 36,000 miles.
The whole distribution
| 10th | 25th | Median | 75th | 90th |
|---|---|---|---|---|
| 70,400 miles | 75,500 miles | 129,850 miles | 136,787 miles | 140,000 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
Putting it right typically runs $250–$2,000 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 4 model years of this car. It shows up earliest on the 1998, at a median of 90,000 miles, and latest on the 2005 at 130,000 miles.
By volume the 1998 carries the most reports, with 21; the 2000 has 11. A mode that appears across most years of a model is usually a design choice rather than a bad batch.
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.
In february 2004, I noticed a smell of exhaust fumes in the interior of the car. Brought it to a mechanic 3 times. He said he didn't smell it, and could find nothing wrong with the car. I recently brought the car in to a new mechanic for servicing, and he informed me that the "exhaust manifold is cracked." I've been suffering some unexplained health problems, such as headaches, light headiness, and fatigue, and now wonder if the symptoms are related to long term exposure to the exhaust fumes. The mechanic suggested I contact the honda dealer to request that they fix the problem at no cost. However, the dealer informed me that the part(s) is only covered up to 80,000 mi. My vehicle currently has 82,000 mi. On it. As it is an expensive repair, it has not yet been fixed.*ak
Intake manifold cracked and fumes came into the vehicle. Contacted honda. It stated there were no problems with the vehicle. *ak....alsi replaced spark plugs, and replaced a cracked exhaust manifold. *ak
Intake manifold cracked and fumes came into the vehicle. Contacted honda. It stated there were no problems with the vehicle. *ak....alsi replaced spark plugs, and replaced a cracked exhaust manifold. *ak
Also reported on the 2000 Honda Civic
Other powertrain problem
Airbag failed to deploy in a crash
Other electrical problem
Other engine problem
Other wheel or tire problem
Ignition switch, key fob or immobilizer failure
How far this goes
Complaints are voluntary, so 11 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 exhaust leak or fumes in the cabin happen on the 2000 Honda Civic?
Across 8 owner reports that included an odometer reading, half were filed by 130,000 miles. A quarter were filed before 75,000 miles and a quarter after 135,000 miles. These are the mileages owners reported when they complained, not a prediction for any individual car.
How common is exhaust leak or fumes in the cabin on the 2000 Honda Civic?
11 reports have been filed with NHTSA, about 0.2 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