Reliability information

We have updated results for the Prius to include owner experiences through June 2009. In terms of successful repair trips per 100 cars per year:

2009: no repairs reported yet, sample size one car (!) below the minimum for a full result

2008: 11

2007: 19

2006: 26

2005: 14

2004: 32

All are much better than average.

A big thank you, once again, to this forum and everyone who has been helping. We'll have further updates in November and February. With more participants, we could provide more precise information.

We'll also have a result for the 2010 in November.

Toyota Prius reliability comparisons

 

We have updated results for the Prius to include owner experiences through September 30, 2009. In terms of successful repair trips per 100 cars per year:

2010 (Gen III): 8

2009: still no repairs reported yet, 26 participants

2008: 12

2007: 19

2006: 34

2005: 28

2004: 38

All are much better than average.

We've also introduced two new statistics, "Nada-odds" and "Lemon-odds," to indicate the percentage of cars with no repairs in the past year and those that required 3+ trips to the repair shop.

In the case of the Prius, the percentage with no repairs is about 78 for the 2005, 68 for the 2006 (last year of the warranty), 84 for the 2007, and 93 for the 2008. The percentage of lemons is less than one for all years.

A big thank you to this forum and everyone who has been helping. We'll have further updates in February and May. With more participants, we could provide more precise information.

Toyota Prius reliability comparisons

 

717 Prius owners now signed up. A great start. The more owners participate, the better the information we can provide to everyone.

Car reliability research

 

Make that 742, including 128 for the 2010 alone.

Among the Gen IIs, especially need more 2004s--many previous participants have now traded theirs, often for a 2010. It's important to have plenty of 2004s, because they'll experience any Gen II problems first.

Not yet signed up? Details here:

Car reliability research

 

You're certainly welcome.

We have updated results for the Prius to include owner experiences through December 31, 2009. In terms of repair trips per 100 cars per year:

2010 (Gen III): 12

2009: still no repairs reported yet, 33 participants

2008: 19

2007: 29

2006: 33

2005: 34

2004: 51

All are much better than average.

We have two additional statistics, "Nada-odds" and "Lemon-odds," to indicate the percentage of cars with no repairs in the past year and those that required 3+ trips to the repair shop.

In the case of the Prius, the percentage with no repairs is about 78 for the 2005, 68 for the 2006 (last year of the warranty), 82 for the 2007, and 83 for the 2008. The percentage of lemons is less than one for all years.

A big thank you, once again, to this forum and the hundreds of owners who have been helping. We'll have further updates in May and August. With more participants, we could provide more precise information.

Toyota Prius reliability comparisons

 

Recently enhanced the related repair history survey so that it can (optionally) be used as a personal car maintenance record.

As always, more participants would be helpful. Updated Car Reliability Survey results in May, with a preview for participants soon.

Car reliability research

 

Updated results very soon. Additional participants always helpful. Especially need more participants for the 2004 and 2009.

 

We have updated results for the Prius to include owner experiences through March 31, 2010. In terms of repair trips per 100 cars per year:

2009: still no repairs reported yet, 35 participants

2008: 26

2007: 28

2006: 28

2005: 27

2004: 44

All are much better than average.

We have two additional statistics, "Nada-odds" and "Lemon-odds," to indicate the percentage of cars with no repairs in the past year and those that required 3+ trips to the repair shop.

In the case of the Prius, the percentage with no repairs is about 82 for the 2005, 72 for the 2006 (last year of the warranty), 83 for the 2007, and 76 for the 2008. The percentage of lemons is about two for the 2007 and less than one for the other years.

A big thank you, once again, to this forum and everyone who has been helping. We'll have further updates in August and November.

To see how competitors compare, and to sign up to help improve this information:

Toyota Prius reliability comparisons

 

Updated stats in about two weeks.

To help provide better information on your year:

Car reliability research

 

We have updated results for the Prius to include owner experiences through June 30, 2010. Other sources of car reliability information won't cover the more recent months until the summer or even fall of next year.

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

2009: 4

2008: 27

2007: 28

2006: 24

2005: 25

2004: 42

All are much better than average.

We have two additional statistics, "Nada-odds" and "Lemon-odds," to indicate the percentage of cars with no repairs in the past year and those that required 3+ trips to the repair shop.

In the case of the Prius, the percentage with no repairs is about 80 for the 2005, 76 for the 2006, 85 for the 2007, 79 for the 2008, and 100 for the 2009. The percentage of lemons is about two for the 2007 and less than one for the other years.

Thank you, once again, to this forum and everyone who has been helping. We'll have further updates in November and February.

To see how competitors compare, and to sign up to help improve this information:

Toyota Prius reliability comparisons

 

Updated reliability stats next month.

As always, the more owners participate, the better the information we can provide to everyone.

Car reliability research

 

We have updated results for the Prius to include owner experiences through September 30, 2010. Other sources of car reliability information won't cover the months since April until the summer or even fall of next year.

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

2009: 10

2008: 32

2007: 26

2006: 23

2005: 21

2004: 50

All are much better than average.

We have two additional statistics, "Nada-odds" and "Lemon-odds," to indicate the percentage of cars with no repairs in the past year and those that required 3+ trips to the repair shop.

In the case of the Prius, the percentage with no repairs is about 82 for the 2005, 79 for the 2006, 79 for the 2007, 78 for the 2008, and 90 for the 2009. The percentage of lemons is about two for the 2007 and less than one for the other years.

Toyota Prius Lemon-odds and Nada-odds


Thank you, once again, to this forum and everyone who has been helping. We'll have further updates in February and May.

To see how competitors compare, and to sign up to help improve this information:

Toyota Prius reliability ratings and comparisons

 

Updated results around the end of the month.

We have some new pages that display all reported repairs by problem area:

2004 Toyota Prius problem reports

From this page it's possible to select a different model year or specify a problem area.