mkaresh

So, how have these cars been doing lately?

Our reliability stats for the A4 / S4 now include owner experiences through March 31, 2015. (Others are nearly a year behind.)

In terms of repair trips per 100 cars per year ("low" is best):

2008 A4: 72, moderate
2008 S4 / RS4: 107, high, very small sample size
2007 A4: 58, moderate
2007 S4 / RS4: 83, moderate, small sample size
2005.5-2006 A4: 71, moderate
2005.5-2006 S4: 84, moderate, small sample size
2005 A4: 66, low, small sample size
2005 S4: 59, low, small sample size
2004 A4: 127, high
2004 S4: 74, low, small sample size

No stat for a model year? Then we very much need more participants for it. Same for those with small sample size notes. Next updates in August and November.

For repair descriptions, the stats for other cars, and to sign up to help improve this information:

Audi A4 / S4 reliability

mkaresh

Our reliability stats for the A4 / S4 now cover the year ending June 30, 2015. (Others are over a year behind, and so report how these cars were doing when a year younger.)

Repair trips per 100 cars:

2008 A4: 58, moderate
2008 S4 / RS4: 82, moderate, very small sample size
2007 A4: 72, moderate
2007 S4 / RS4: 85, moderate, small sample size
2005.5-2006 A4: 84, moderate
2005.5-2006 S4: 81, moderate, small sample size
2005 A4: 86, moderate, small sample size
2005 S4: 73, moderate, small sample size
2004 A4: 121, high, small sample size
2004 S4: 56, low, small sample size

If a model year's sample size is small, then we especially need more owners involved.

For the descriptions of all reported repairs, results for other models, and to sign up to help improve this information:

Audi A4 / S4 reliability ratings and comparisons

mkaresh

We've updated our reliability stats for the A4 / S4 to include owner experiences through September 30, 2015.

Repair frequencies, in terms of repair trips per 100 cars per year:

2008 A4: 73, moderate
2008 S4 / RS4: 89, high, very small sample size
2007 A4: 82, moderate
2007 S4 / RS4: 78, moderate, small sample size
2005.5-2006 A4: 86, moderate
2005.5-2006 S4: 40, low, very small sample size
2005 A4: 82, moderate, small sample size
2005 S4: 75, moderate, small sample size
2004 A4: 109, moderate, small sample size
2004 S4: 45, low, very small sample size

We'll have further updates in February and in May. Additional participants are needed to provide precise stats for all model years.

For the details, including repair descriptions, and to sign up to help improve this information:

Audi A4 / S4 reliability ratings and comparisons

mkaresh

We've updated our reliability stats for the A4 / S4 to include owner experiences through the end of 2015, about eight months ahead of other sources. In terms of repair trips per 100 cars per year--lower is better:

2008 A4: 80, moderate
2008 S4 / RS4: 112, high, very small sample size
2007 A4: 85, moderate
2007 S4 / RS4: 67, moderate, small sample size
2005.5-2006 A4: 84, moderate
2005.5-2006 S4: 55, low, very small sample size
2005 A4: 83, moderate, small sample size
2005 S4: 93, moderate, small sample size
2004 A4: 128, high, small sample size
2004 S4: 63, low, very small sample size

We'll have further updates in May and in August. The more owners participate, the more comprehensive and precise these will be.

For the repairs behind these stats, reliability information on other models, and to sign up to help improve this information:

Audi A4 / S4 reliability ratings and comparisons

mkaresh

We've updated our reliability stats for the A4 / S4 to include owner experiences through June 30, 2016. Repair frequencies, in terms of repair trips per 100 cars per year (lower is better):

2008 A4: 89, moderate
2008 S4 / RS4: 110, high, very small sample size
2007 A4: 74, moderate
2007 S4 / RS4: 47, low, small sample size
2005.5-2006 A4: 103, high
2005.5-2006 S4: 85, moderate, very small sample size
2005 A4: 119, high, small sample size
2005 S4: 47, low, very small sample size
2004 A4: 117, moderate, small sample size
2004 S4: 91, moderate, very small sample size

As suggested by the sample size notes, additional participants would be very helpful.

For the repairs behind these stats, reliability information on other models, and to sign up to help improve this information:

Audi A4 / S4 reliability ratings and comparisons