What is the power train for the 2024 Toyota Sienna?
The 2024 Toyota Sienna is powered by a hybrid system that pairs a 2.5-liter Atkinson-cycle gasoline engine with electric propulsion, delivering about 245 net horsepower through an electronic CVT. Front-wheel drive is standard, with all-wheel drive available on hybrid models.
Hybrid powertrain configuration
In 2024, Toyota continues to rely on its Hybrid Synergy Drive architecture for the Sienna, integrating a gasoline engine with electric motors and regenerative braking to optimize efficiency and performance. The system uses an electronically controlled CVT to blend power from both sources.
The following essential components make up the Sienna's powertrain:
- Engine: 2.5-liter inline-4 Atkinson-cycle gasoline engine
- Electric motors: A pair of high-voltage electric motors that drive the front wheels (MG2) and, in all-wheel-drive models, provide drive to the rear axle via a second motor
- Transmission: Electronically controlled continuously variable transmission (eCVT)
- Battery: High-voltage hybrid battery pack that stores energy for propulsion and regenerative braking
- Drivetrain options: Front-wheel drive is standard; all-wheel drive is available on Sienna Hybrid models
- Power output: Net system horsepower is about 245 hp (engine plus electric motors combined)
With this configuration, the Sienna delivers smooth, quiet acceleration and efficient highway performance, while AWD helps traction in adverse conditions without a traditional gas-only drivetrain.
How AWD is implemented
For Sienna models equipped with all-wheel drive, a rear-mounted electric motor engages the rear axle when needed, providing torque to the rear wheels without requiring a bulky additional transmission. This setup preserves interior space and contributes to improved stability on slippery roads while preserving fuel efficiency.
Performance and efficiency context
Toyota designed the 2024 Sienna’s powertrain to emphasize balance between performance and fuel economy. The hybrid system supports smooth operation during city driving, steady highway cruising, and modest towing capabilities for its class, while remaining inherently more efficient than traditional gasoline-only minivans.
Summary
The 2024 Toyota Sienna uses a hybrid-only powertrain that combines a 2.5-liter Atkinson-cycle gasoline engine with electric motors, managed by an eCVT. It delivers around 245 net horsepower, standard front-wheel drive, and optional all-wheel drive, reflecting Toyota’s focus on efficiency, smoothness, and practical capability for family use.
