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Year Make/Model Repair Frequencysuccessful repair trips per 100 cars per year Compared to all models for the same year  
2015 Acura MDX   21 MDXs, 4.4 months of data per MDX, average 3800 miles

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2014 Acura MDX 58 MDXs, 8.0 months of data per MDX, average 10300 miles

Redesigned. Voice control system problem in early cars addressed with revised head unit. Also multiple reports of a grinding noise caused by misaligned drive belt pulleys, a non-functioning rain sensor for wipers, and squeaks.
54
70% 70% Fewest Trips Most Trips
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2013 Acura MDX   14 MDXs, 8.9 months of data per MDX, average 19300 miles

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2013 BMW X5 30 X5s, 8.4 months of data per X5, average 19300 miles24
20% 20% Fewest Trips Most Trips
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2012 Acura MDX 40 MDXs, 9.8 months of data per MDX, average 32600 miles22
10% 10% Fewest Trips Most Trips
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2012 BMW X5 29 X5s, 8.1 months of data per X5, average 29700 miles

All of the reported engine repairs involve the diesel.
41
40% 40% Fewest Trips Most Trips
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2011 Acura MDX 27 MDXs, 8.4 months of data per MDX, average 44200 miles32
20% 20% Fewest Trips Most Trips
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2011 BMW X5 39 X5s, 7.8 months of data per X5, average 47800 miles

Refreshed for this model year. Most of the reported engine repairs involve the diesel, which has a higher repair frequency.
67
70% 70% Fewest Trips Most Trips
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2010 Acura MDX 33 MDXs, 9.9 months of data per MDX, average 54000 miles11
0% 0% Fewest Trips Most Trips
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2010 BMW X5   12 X5s, 9.7 months of data per X5, average 69200 miles

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2009 Acura MDX   22 MDXs, 10.5 months of data per MDX, average 68500 miles

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2008 Acura MDX 48 MDXs, 9.5 months of data per MDX, average 90000 miles53
40% 40% Fewest Trips Most Trips
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2008 BMW X5   14 X5s, 7.9 months of data per X5, average 88700 miles

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2007 Acura MDX 53 MDXs, 9.2 months of data per MDX, average 89800 miles

First model year of second-generation MDX.
62
40% 40% Fewest Trips Most Trips
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2007 BMW X5   14 X5s, 7.9 months of data per X5, average 85200 miles

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2006 Acura MDX 25 MDXs, 8.4 months of data per MDX, average 104900 miles63
40% 40% Fewest Trips Most Trips
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2006 BMW X5   11 X5s, 7.5 months of data per X5, average 76300 miles

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2005 Acura MDX 28 MDXs, 9.0 months of data per MDX, average 137300 miles33
0% 0% Fewest Trips Most Trips
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2005 BMW X5   12 X5s, 9.3 months of data per X5, average 95500 miles

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2004 Acura MDX 28 MDXs, 10.1 months of data per MDX, average 145500 miles

Refreshed for this model year. Past common problem with engine mounts.
55
10% 10% Fewest Trips Most Trips
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2003 Acura MDX 25 MDXs, 7.7 months of data per MDX, average 147500 miles56
10% 10% Fewest Trips Most Trips
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2002 Acura MDX   18 MDXs, 9.7 months of data per MDX, average 148100 miles

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2002 BMW X5   12 X5s, 5.5 months of data per X5, average 151600 miles

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2001 Acura MDX   18 MDXs, 8.1 months of data per MDX, average 142700 miles

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Acura MDX vs. BMW X5 Reliability Comparisons

You won't find Acura MDX or BMW X5 reliability information like this anywhere else. Actual repair frequencies, not just vague dots, to make it clear how much the Acura MDX and the BMW X5 truly differ in reliability.

These stats are promptly updated four times a year, to much more closely track Acura MDX and BMW X5 reliability as the cars age. Others tell you how reliable the Acura MDX and the BMW X5 were a year ago, when the cars were a year younger and had 12,000 fewer miles on them. Only TrueDelta tells you how reliable the Acura MDX and the BMW X5 have been recently.

What People Are Saying about Reliability and the Acura MDX

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What Our Members Are Saying about the Reliability and Durability of the Acura MDX

Acura MDX Reliability and Durability: Pros
YearBody/PowertrainComment
2012 4dr SUV 290-horsepower 3.5L V6
9-speed shiftable automatic AWD
We've owned several Acura's over the past 13 years, this is the first SUV. The past has proven their reliability as long as you maintain them. I mean the basic prescribed routine care every 5,000 miles. I've driven many different American made vehicles supplied by my Company over the span of the last 35 years and none can compare with how Acura's hold up or perform, even with the same routine care and still offer the resale value that they do.
2009 4dr SUV 290-horsepower 3.5L V6
9-speed shiftable automatic AWD
I am not worried about breaking down or about expensive repairs. This is a vehicle I can keep with no worries.
2008 4dr SUV 290-horsepower 3.5L V6
9-speed shiftable automatic AWD
Initial fit is not there
2008 4dr SUV 290-horsepower 3.5L V6
9-speed shiftable automatic AWD
expecting it to be above average.
2007 4dr SUV 290-horsepower 3.5L V6
9-speed shiftable automatic AWD
Hve friends who have owned MDX for over 10 years and had no issues
2007 4dr SUV 290-horsepower 3.5L V6
9-speed shiftable automatic AWD
My last Acura Legend went 262 thousand miles with nothing but oil changes and tires. That is reliability!
2007 4dr SUV 290-horsepower 3.5L V6
9-speed shiftable automatic AWD
brand reputation, online reviews and ranking
2007 4dr SUV 290-horsepower 3.5L V6
9-speed shiftable automatic AWD
i have owned several acura passenger vehicles and the reliability is unbeatable in my opinion. as it turned out i did have some front end thunks in my MDX. at no time did the dealer ever admit defeat (they all do that) and always made me feel welcome.
2007 4dr SUV 290-horsepower 3.5L V6
9-speed shiftable automatic AWD
rated highly by Consumer reports
2007 4dr SUV 290-horsepower 3.5L V6
9-speed shiftable automatic AWD
trouble free operation over time
Acura MDX Reliability and Durability: Cons
YearBody/PowertrainComment
2007 4dr SUV 290-horsepower 3.5L V6
9-speed shiftable automatic AWD
Multiple trips to shop
2007 4dr SUV 290-horsepower 3.5L V6
9-speed shiftable automatic AWD
Had to make 4 trips to the dealer for warranty issues in 18 months of ownership.
2003 4dr SUV 290-horsepower 3.5L V6
9-speed shiftable automatic AWD
This SUV is a dog! Engine mounts, transmission, AC, alternator, cooling fan have all failed catastrophically. I will not buy an Acura again
 

What Our Members Are Saying about the Reliability and Durability of the BMW X5

BMW X5 Reliability and Durability: Pros
YearBody/PowertrainComment
2008 4dr SUV turbocharged 300hp 3.0L I6
8-speed shiftable automatic AWD
german engineer
2002 4dr SUV turbocharged 445hp 4.4L V8
8-speed shiftable automatic AWD
It appears from others to be a safe and reliable car. If the engine holds up as well as my other I should have it a long time. It has 60,000 mile but looks and drives like new.
2002 4dr SUV turbocharged 315hp 3.0L I6
8-speed shiftable automatic AWD
Way too many repairs. The list is endless culminating in a required engine rebuild that I refuse. Donate to a church.
BMW X5 Reliability and Durability: Cons
YearBody/PowertrainComment
2003 4dr SUV turbocharged 445hp 4.4L V8
8-speed shiftable automatic AWD
Got in mechanical trouble all the time~~~
2001 4dr SUV turbocharged 445hp 4.4L V8
8-speed shiftable automatic AWD
The worst car I have ever owned. The transmission failed 4 days after the warranty was over - and the vehicle had less than 45,000 miles on it then.