Typically one belt—the serpentine (accessory) belt—that drives the alternator, power steering, and air conditioning on modern Yaris engines. Most current Yaris models use a timing chain, not a timing belt, so there isn’t a separate timing belt. If you’re looking at an older or less common engine variant, there could be a second belt for the timing belt.
Belt configurations by engine type
In practice, the number of belts on a Yaris depends on the engine code and generation. Here are the common scenarios you may encounter:
- Timing chain engines: only one belt—the serpentine/accessory belt—exists.
- Timing belt engines: two belts—the timing belt plus the serpentine/accessory belt.
- Yaris Hybrid engines: typically one belt for accessories; the petrol engine uses a timing chain, and the hybrid system adds electric drive components without introducing a second drive belt.
Note: Always verify with your owner's manual or the engine code for your specific model, as specifications can vary by market and model year.
How to confirm the belt setup on your Yaris
Use these steps to confirm whether your Yaris uses a timing belt or chain and how many belts there are:
- Find your engine code. It is usually printed on the engine block or listed in the owner's manual or underhood label.
- Check the official maintenance schedule for that engine code. If it mentions a timing belt replacement interval, your engine uses a timing belt; if it indicates a timing chain, it uses a chain and typically has only the single accessory belt.
- Safely inspect the belt area if you can: a timing belt is behind a cover and not easily visible without removing a cover, while a timing chain is behind a metal cover that can be opened by a mechanic to reveal the chain.
- Consult a dealer or trusted mechanic if you’re unsure about your specific model.
Confirming your engine details will tell you exactly how many belts your Yaris has and when to service them.
Summary
Most modern Toyota Yaris models have a single serpentine belt and rely on a timing chain rather than a timing belt. If your particular Yaris uses a timing belt, you would have two belts in the engine bay. Always check your engine code and the owner's manual to confirm the exact configuration for your generation and market, and follow the recommended service intervals for belts if applicable.