1NZ-FE Engine (1.5L):
- Yaris (1st Generation, 2005-2006): Every 60,000 miles (96,000 km) or 6 years
- Yaris (2nd Generation, 2007-2011): Every 90,000 miles (144,000 km) or 9 years
1NZ-FXE Engine (1.5L Hybrid):
- Yaris Hybrid (1st Generation, 2007-2011): Every 100,000 miles (160,000 km) or 10 years
2NZ-FE Engine (1.3L):
- Yaris (2nd Generation, 2007-2011): Every 60,000 miles (96,000 km) or 6 years
1KR-FE Engine (1.0L):
- Yaris (3rd Generation, 2012-2019): Every 120,000 miles (192,000 km) or 10 years
1NR-FE Engine (1.5L):
- Yaris (4th Generation, 2020-Present): Every 120,000 miles (192,000 km) or 10 years
Please note that these are general recommendations, and the actual maintenance intervals may differ based on driving conditions and your vehicle's usage. It's best to consult your vehicle's owner's manual or a qualified mechanic for specific timing belt replacement intervals for your Toyota Yaris model.