We've updated our reliability stats for the TT to include owner experiences through September 30, 2015. In terms of repair trips per 100 cars per year:

2009 TT: 37, low, small sample size
2008 TT: 76, moderate, small sample size
2001 TT: 84, moderate

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 TT reliability ratings and comparisons

 

We've updated our reliability stats for the TT 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:

2009 TT: 60, moderate, very small sample size
2008 TT: 72, moderate, small sample size
2001 TT: 95, moderate, small sample size

No stat, or a small sample size? We need more owners involved to provide precise stats for all years.

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

Audi TT reliability ratings and comparisons

 

I have a 2003 but didn't see that year when I clicked on the link.

 

We've updated our reliability stats for the TT to include owner experiences through June 30, 2016. Reliability information elsewhere is based on a survey conducted in April 2015--well over a year ago.

Repair frequencies, in terms of repair trips per 100 cars per year (lower is better):

2009 TT: 20, low, very small sample size
2008 TT: 78, moderate, small sample size
2001 TT: 78, low, small sample size

We'll have further updates in November and next February. 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 TT reliability ratings and comparisons