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BMW X5 vs. Audi A6 / S6 Reliability Comparisons

You won't find BMW X5 or Audi A6 / S6 reliability information like this anywhere else. Actual repair frequencies, not just vague dots, to make it clear how much the BMW X5 and the Audi A6 / S6 truly differ in reliability.

These stats are promptly updated four times a year, to much more closely track BMW X5 and Audi A6 / S6 reliability as the cars age. Others tell you how reliable the BMW X5 and the Audi A6 / S6 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 BMW X5 and the Audi A6 / S6 have been recently.

Take the TrueDelta survey on your car and get free access to all of the data on this page. Click here to get started!
See reliability results for all Sedans, Wagons, and SUVs.

See only powertrain and chassis results

Year Make/Model Repair Frequencysuccessful repair trips per 100 cars per year Compared to all models for the same year  
2014 Audi A6 / S6 29 A6 / S6s, 5.8 months of data per A6 / S6, average 4800 miles21
20% Fewest Trips Most Trips
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2013 Audi A6 / S6 49 A6 / S6s, 8.4 months of data per A6 / S6, average 11100 miles

Includes A7 / S7.
53
70% Fewest Trips Most Trips
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2013 BMW X5   22 X5s, 7.4 months of data per X5, average 10900 miles

* Small sample size.
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2012 Audi A6 48 A6s, 10.1 months of data per A6, average 22100 miles

First year of the C7 A6. Includes A7s.
40
50% Fewest Trips Most Trips
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2012 BMW X5 28 X5s, 10.0 months of data per X5, average 24000 miles43
50% Fewest Trips Most Trips
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2011 BMW X5 43 X5s, 8.7 months of data per X5, average 38200 miles

Refreshed for this model year.
54
60% Fewest Trips Most Trips
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2010 BMW X5   12 X5s, 8.3 months of data per X5, average 55100 miles

* Very small sample size.
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2009 BMW X5   11 X5s, 8.5 months of data per X5, average 63900 miles

* Very small sample size.
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2008 Audi A6 / S6   18 A6 / S6s, 7.9 months of data per A6 / S6, average 68900 miles

* Small sample size.
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2008 BMW X5   18 X5s, 8.0 months of data per X5, average 68000 miles

* Small sample size.
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2007 Audi A6 / S6   19 A6 / S6s, 8.8 months of data per A6 / S6, average 81900 miles

* Small sample size.
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2007 BMW X5   13 X5s, 8.9 months of data per X5, average 68000 miles

* Very small sample size.
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2006 Audi A6 34 A6s, 10.1 months of data per A6, average 91900 miles81
60% Fewest Trips Most Trips
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2006 BMW X5   15 X5s, 8.3 months of data per X5, average 81600 miles

* Small sample size.
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2005 Audi A6   16 A6s, 6.9 months of data per A6, average 112100 miles

* Small sample size.
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2005 BMW X5   11 X5s, 8.4 months of data per X5, average 89500 miles

* Very small sample size.
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2004 Audi A6   11 A6s, 9.1 months of data per A6, average 87600 miles

* Very small sample size.
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2003 Audi A6 / S6 / RS6   17 A6 / S6 / RS6s, 9.1 months of data per A6 / S6 / RS6, average 118600 miles

* Small sample size.
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2002 Audi A6 / S6   19 A6 / S6s, 9.6 months of data per A6 / S6, average 124800 miles

* Small sample size.
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2002 BMW X5   10 X5s, 9.4 months of data per X5, average 142300 miles

* Very small sample size.
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2001 Audi A6   19 A6s, 8.9 months of data per A6, average 142500 miles

* Small sample size.
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2001 BMW X5   10 X5s, 9.8 months of data per X5, average 115200 miles

* Very small sample size.
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2000 Audi A6   15 A6s, 9.7 months of data per A6, average 146900 miles

* Small sample size.
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What People Are Saying about Reliability and the BMW X5

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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 260-horsepower 3.0L I6
6-speed shiftable automatic AWD
german engineer
2002 4dr SUV 282-horsepower 4.4L V8
5-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.
BMW X5 Reliability and Durability: Cons
YearBody/PowertrainComment
2003 4dr SUV 282-horsepower 4.4L V8
5-speed shiftable automatic AWD
Got in mechanical trouble all the time~~~
2001 4dr SUV 282-horsepower 4.4L V8
5-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.
 

What Our Members Are Saying about the Reliability and Durability of the Audi A6 / S6

Audi A6 / S6 Reliability and Durability: Pros
YearBody/PowertrainComment
2008 4dr Sedan 255-horsepower 3.1L V6
6-speed shiftable automatic AWD
This car has never let me sitting and would hope not for the money paid except when i let the gas run to low and was a minute from a gas station. The paint seems to scratch very easily which i have my car in a garage and somehow find new scratches.
2006 4dr Sedan 255-horsepower 3.1L V6
6-speed shiftable automatic AWD
The 2006 model continues to get good reviews in Consumer Reports and other publications. My experience thus far as been excellent -- have only had one item repaired in 18 months of ownership as I bought the car used.
Audi A6 / S6 Reliability and Durability: Cons
YearBody/PowertrainComment
2006 4dr Sedan 255-horsepower 3.1L V6
6-speed shiftable automatic AWD
Broke down (transmission twice and fuel system once) three times and had to be towed back to dealership for stays of three weeks, two weeks, and one week.
2006 4dr Sedan 255-horsepower 3.1L V6
6-speed shiftable automatic AWD
VERY expensive to fix and maintain
2005 4dr Sedan 255-horsepower 3.1L V6
6-speed shiftable automatic AWD
At the 60,000 milemark the car started to have mechanical problems, in particualr with the fuels system. I went through 5 fuel pumps, both hiigh and low pressure in a 1.5 year time frame. The dealership and a very reputable independant shop could not figure out what was wrong with the fuel system and why the car kept burning out the fuel pump.
2004 4dr Sedan 300-horsepower 4.2L V8
5-speed shiftable automatic AWD
Owned the car for a year or so. Thermostat stuck shut, differential gear whine started, gas gap failed, small leak around coolant res., LCD screen in car starting to loose pixels.
2003 4dr Sedan 220-horsepower 3.0L V6
5-speed shiftable automatic AWD
they seem to have minds of their own some days..electrical gremlins occasionally
2002 4dr Sedan turbocharged 250hp 2.7L V6
6-speed manual AWD
In general, the car is very reliable and durable as long as it is maintained properly, however when something does go wrong it can be VERY expensive to repair.