21 problems have been reported for the 2014 Audi A6.
The following chart shows the 9 most common problems for 2014 Audi A6.
The number one most common problem is related to the vehicle's equipment
with 5 problems.
The second most common problem is related to the vehicle's air bags
(5 problems).

In our research we use the PPMY index to compare the reliability of vehicles. The PPMY index of a certain model is defined as the problems reported per thousand vehicles per Year. The total sales of the 2014 Audi A6 in the United States are 20,254 units [1]. If the total number of problems reported by Audi A6 owners in the last 5 years is 21, and the age of the vehicle is 5, the PPMY index can then be calculated as

The following chart shows the number of problems reported during each of the service
years since the debut of the 2014 Audi A6 in 2014.

Table 2. PPMY Index and Problem Occurrence Trend

Service Year

Number of Problems

2019

1

2018

6

2017

0

2016

3

2015

3

2014

1

Compare the 2014 Audi A6 with Other Model Years

When making the decision between buying a new or used Audi A6,
the following table can be used to compare the 2014 Audi A6
with the Audi A6 from other model years.
Note that the number of problems reported for the 2014 A6 is 21
while the average number of problems reported for the 23 model years of the Audi A6 is 62.

Table 3. Compare the 2014 Audi A6 with other model years