Is Toyota CVT using a steel belt or chain?
3 Answers
Honda's CVT uses a steel belt. Firstly, most current CVT transmissions adopt steel belt drive systems. This transmission method can alter gear ratios by adjusting pulley sizes and can handle greater torque. Honda's CVT steel belts are primarily developed in-house, with their key feature being specialized compatibility with corresponding Honda models. Durability comparison: CVT chains are generally less durable than steel belts. Primarily, CVT chains exert less impact on the cone pulleys, whereas steel belts have significantly lower strength compared to chains. Therefore, CVT transmissions using steel belts cannot withstand high torque. For instance, Nissan's CVT transmissions employ steel belts for power transmission and exhibit relatively higher failure rates. Although steel belts may generate more noise, they can endure greater torque and demonstrate superior durability.
Toyota's CVT transmissions use either a steel belt or a chain, depending on the specific model. For example, the 1.2T gasoline-powered Corolla and Levin use a steel belt CVT, where the belt is made of multiple thin steel layers, providing smoother power delivery suitable for small-displacement engines. However, models like the Camry 2.0L or RAV4 2.5L hybrid use a chain-type CVT because the chain can handle higher torque. I once disassembled a friend's older Levin and clearly saw the steel belt structure—the mechanic mentioned this design has lower repair costs. Toyota's differentiation is mainly based on engine power requirements: steel belts are sufficient for small displacements, while chains are more reliable for larger engines.
The answer depends on which Toyota model you're referring to, as different vehicles have varying configurations. Most 1.5L, 1.8L naturally aspirated or small-displacement turbocharged models like the Yaris and C-HR gasoline versions use belt-type CVTs, which have simpler structures, lower costs, and provide smooth, fuel-efficient driving. However, vehicles with engines above 2.0L displacement, such as the gasoline-powered Avalon or Highlander Hybrid, typically employ chain-type CVTs that can handle greater torque. Having driven a chain-type CVT Camry, I noticed more direct power delivery during acceleration, though chain noise is slightly more noticeable during cold starts. Both designs have their advantages, and Toyota engineers select the most suitable solution based on engine parameters.
