Misfire or rough idle on the 2007 Honda Accord
2 crashes 1 fire 3 of the 12 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.
When misfire or rough idle gets reported
Owners of the 2007 Honda Accord report misfire or rough idle at a median of 90,000 miles. A quarter of the reports come in before 90,000 miles and a quarter after 135,000 miles, from 9 reports that carried an odometer reading.
A part like this is normally expected to survive 92,000 miles. It is the 16th most-reported problem on this model year.
The mileage distribution
The reported range runs from 85,000 miles at the tenth percentile to 140,000 miles at the ninetieth, a spread of 55,668 miles across the middle 80% of reports.
Reports bunched into a band this tight usually mean the component has a life of its own: it goes at roughly the same mileage regardless of who owns it.
0% of the dated reports were filed under 36,000 miles.
The whole distribution
| 10th | 25th | Median | 75th | 90th |
|---|---|---|---|---|
| 84,332 miles | 88,000 miles | 89,135 miles | 135,000 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
Of these reports, 2 a crash and 1 a fire are 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–$1,600 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 20 model years of this car. It shows up earliest on the 2016, at a median of 6 miles, and latest on the 1997 at 170,000 miles.
By volume the 2018 carries the most reports, with 87; the 2007 has 12. 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.
When driving the car, the check engine light flashed on, then off. We took it to the mechanic who found nothing wrong. A week later, the light flashed on and off again. Another trip to the mechanic and then to the dealer revealed that a spark plug had come loose and broke apart causing the cylinder head, cylinder wall and piston to be damaged. The fix was that the car basically needed a new engine (replaced short block, cylinder head, all spark plugs and all necessary gaskets and seals). Due to the number of miles on the car (69k at the time of incident), it was no longer under warranty. Everyone from the mechanic to the dealer said they had never seen this happen before. Honda did end up paying for a percentage of the repair, but our portion was still around $2500. This was our first honda, we bought it based on reputation and because we put a lot of miles on cars. We never expected to have to replace the engine at three years old.
I was passing a car on the expressway doing 75 MPH and the engine sent an errant signal to the spark plug causing it to grenade . This sent pieces into the engine destroying it. This happened with only 47000 miles on the 3.0 vtec v6 motor. The first motor blew the exact same way. The previous year I was stuck in a snow bank so I was putting it into drive then reverse to rock the car out of the snow bank and the engine sent an errant signal to the spark plug causing it to grenade . This sent pieces into the motor destroying it. Honda replaced the first motor because it was still under factory warranty but wouldn't replace the second motor because it wasn't under factory warranty even though it happened with less than 50,000 miles on the motor. I was forced to purchase a used car so I could get to work and the honda dealership wouldn't give me anything for trade-in from their piece of junk accord. *tr
2007 honda accord ex v6 coupe. First failure incident came at around 88,000 miles on the car. Check engine light came on and said it was due to an oxygen sensor bank 2 sensor 1. Replaced the oxygen sensor and the code disappeared. At about 96,000 miles the same error code came on. Did some research and found that this was common amongst this model accord and engine v6. After about 5,000 miles of driving on this code with a new oxygen sensor, the cel(check engine light) flashed. I was driving on the highway in about 70 degree weather and traveling at 65 MPH. After pulling over to check the car, the spark plug and coil pack had blown completely out of cylinder number 5..(another common issue for 2007 honda accord v6). Have not taken it to the dealer for repair costs, but the entire engine will now have to be replaced. There needs to be a recall out for this as it will not cause me to replace the entire engine. I will be calling honda as well to see what they will be doing about this problem. *tr
Also reported on the 2007 Honda Accord
Other body or interior problem
Other powertrain problem
Other electrical problem
Airbag inflator rupture
Other brake problem
Other speed control problem
How far this goes
Complaints are voluntary, so 12 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 misfire or rough idle happen on the 2007 Honda Accord?
Across 9 owner reports that included an odometer reading, half were filed by 90,000 miles. A quarter were filed before 90,000 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 misfire or rough idle on the 2007 Honda Accord?
12 reports have been filed with NHTSA, about 0.1 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