We've updated our reliability stats for the 4Runner to include owner experiences through June 30, 2016. Repair frequencies, in terms of repair trips per 100 cars per year (lower is better):
2008 4Runner: 23, low
2007 4Runner: 16, low
2006 4Runner: 57, low
2005 4Runner: 75, moderate
2004 4Runner: 88, moderate
2003 4Runner: 34, low, small sample size
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:
2007 4Runner: 89, < 1
2006 4Runner: 60, < 1
2005 4Runner: 54, 4
Additional participants always helpful, especially for years without stats or with small sample sizes.
For the repairs behind these stats, reliability information on other models, and to sign up to help improve this information:
Toyota 4Runner reliability ratings and comparisons