AtWhatMileage
Cooling · 7 owner reports

Radiator or coolant leak on the 2005 Acura MDX

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.

Reports of this failure 7
With an odometer reading 7
Reports per 1,000 built 0.1 per 1,000
Filed below 36,000 miles 0%
Mention a crash, fire or injury 0
Typical repair $350–$1,900
What it means when it happens High
Rank among this year's problems 9th

When radiator or coolant leak gets reported

There are 7 reports of radiator or coolant leak on the 2005 Acura MDX, 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 98,000 miles. It is the 9th most-reported problem on this model year.

The whole distribution

Percentiles of the 7 odometer readings owners gave.
10th25thMedian 75th90th
— — 128,320 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 $350–$1,900 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 5 model years of this car. It shows up earliest on the 2016, at a median of 15,000 miles, and latest on the 2003 at 165,000 miles.

By volume the 2004 carries the most reports, with 11; the 2005 has 7. 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.

Median
  1. 2001 Acura MDX radiator or coolant leak 150k
  2. 2003 Acura MDX radiator or coolant leak 163k
  3. 2004 Acura MDX radiator or coolant leak 143k
  4. 2005 (this one) 128k
  5. 2016 Acura MDX radiator or coolant leak 17k
  6. 2020 Acura MDX radiator or coolant leak
    no odometer readings given
    —
  7. 2024 Acura MDX radiator or coolant leak 23k
  8. 2025 Acura MDX radiator or coolant leak
    no odometer readings given
    —

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.

While driving the SUV in a busy street 30-45mph felt the vibration, grinding, the triangle distress sign came on and felt the vehicle is going to stall. Managed to get the SUV to the parking lot on the right side. The SUV completely stalled there and we got it towed to the acura dealer. They looked at it and the technician gave us the initial diagnosis as "radiator has blown coolant line , fluids have cross contaminated and will take a lot of time to bleed out, also possible transmission failure in the process would need to retest drive after radiator replacement to see if transmission works". *tr

82,000 miles NHTSA complaint 935590 filed 2012-08-22

While driving the SUV in a busy street 30-45mph felt the vibration, grinding, the triangle distress sign came on and felt the vehicle is going to stall. Managed to get the SUV to the parking lot on the right side. The SUV completely stalled there and we got it towed to the acura dealer. They looked at it and the technician gave us the initial diagnosis as "radiator has blown coolant line , fluids have cross contaminated and will take a lot of time to bleed out, also possible transmission failure in the process would need to retest drive after radiator replacement to see if transmission works". *tr

82,000 miles NHTSA complaint 935591 filed 2012-08-22

The transmission cooler connection blew out of the radiator, unfortunately there is no oil pressure switch for transmissions so I had no idea that the trans fluid was pouring all over the road. Lucky for me I was just leaving the house and my friend saw it and stopped me. Upon looking at the part -it has only 3 threads and I have found out this is a common thing for mdx and pilot SUV's. I could have been in an accident due to the transmission failure that has resulted from this failure by others as I have seen on your site example:. ( pilot ex-l 244hp 3.5l sohc 24-valve automatic transmission failure). *tr

135,000 miles NHTSA complaint 1167975 filed 2015-03-22

Also reported on the 2005 Acura MDX

Torque converter failure

38 reports median 72k

Other powertrain problem

36 reports median 90k

Other electrical problem

14 reports median 100k

Airbag inflator rupture

11 reports median 50k

Other engine problem

10 reports median 84k

Other brake problem

9 reports median 106k

How far this goes

This page is kept out of search results because 7 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 7 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 radiator or coolant leak happen on the 2005 Acura MDX?

Across 7 owner reports that included an odometer reading, half were filed by 130,000 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 radiator or coolant leak on the 2005 Acura MDX?

7 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