Toyota Redundant Sienna problems by year
383 complaints across 2 model years, 2021–2022. 2021 draws the most at 223; 2022 the fewest at 160.
Read this first
Complaint volume tracks how many cars were sold as much as how reliable they were. A popular model year will always look worse than a rare one. Compare the dominant failure system between years rather than the raw totals.