2020 Toyota Sienna IV 2.5 (245 Hp) Hybrid E-Four e-CVT

The Toyota Sienna IV, launched in 2020, represents the fourth generation of Toyota’s popular minivan. Sold exclusively in North America, the Sienna has become a mainstay for families seeking a spacious, reliable, and increasingly fuel-efficient vehicle. The fourth generation marked a significant shift for the Sienna, abandoning traditional gasoline-only powertrains in favor of a standard hybrid system. This move solidified the Sienna’s position as a leader in the minivan segment, emphasizing practicality and efficiency. The 2.5-liter Hybrid E-Four variant, producing 245 horsepower, is a key offering within the Sienna IV lineup, providing all-wheel drive capability and enhanced fuel economy.

Toyota Sienna IV 2.5 Hybrid E-Four: A Detailed Overview

The Sienna IV 2.5 Hybrid E-Four is a full hybrid electric vehicle (FHEV) designed to maximize fuel efficiency without sacrificing the space and versatility expected of a minivan. It caters to the North American market, where minivans remain a popular choice for families and those requiring substantial cargo capacity. The E-Four designation indicates the inclusion of Toyota’s electronically controlled all-wheel drive system, enhancing traction and stability in various driving conditions. This model year marked a complete redesign for the Sienna, focusing on a more modern aesthetic, improved interior features, and a commitment to hybrid technology.

Engine & Performance

The heart of the Sienna IV 2.5 Hybrid E-Four is a 2.5-liter inline-four cylinder A25A-FXS gasoline engine paired with a sophisticated hybrid system. The gasoline engine produces 189 horsepower at 6000 rpm and 176.28 lb-ft of torque at 4400 rpm. This engine utilizes direct injection and multi-port manifold injection, along with a dual VVT-i (Variable Valve Timing-intelligence) system – VVT-iE on the exhaust side – to optimize performance and efficiency. The hybrid system incorporates two electric motors: one positioned to assist the front wheels, delivering 180 horsepower and 199.14 lb-ft of torque, and a second, smaller motor powering the rear wheels with 54 horsepower and 89.25 lb-ft of torque. The combined system output is rated at 245 horsepower. Power is delivered through an electronically controlled continuously variable transmission (e-CVT), which seamlessly blends the power from the gasoline engine and electric motors. This powertrain configuration allows for all-wheel drive operation and the ability to operate in electric-only mode under certain conditions. The weight-to-power ratio is 8.5 kg/Hp, and the weight-to-torque ratio is 8.7 kg/Nm.

Design & Features

The Sienna IV features a contemporary exterior design, departing from the more conservative styling of previous generations. The minivan boasts a sleek profile with a bold front grille and distinctive headlights. Inside, the Sienna prioritizes passenger comfort and convenience. The vehicle offers seating for seven to eight passengers, depending on the configuration, with ample legroom and headroom in all three rows. Key features include a modern infotainment system with touchscreen display, available premium audio systems, and a suite of advanced safety technologies. The Sienna IV incorporates Toyota Safety Sense 2.0 as standard equipment, including features like pre-collision system with pedestrian detection, lane departure alert with steering assist, and full-speed range dynamic radar cruise control. The interior is designed with practicality in mind, offering numerous storage compartments and a versatile cargo area. The rear cargo space ranges from 33.51 cubic feet with all seats in use to a maximum of 101 cubic feet with the second and third rows folded down. The Sienna’s focus is on providing a comfortable and safe environment for families, with a blend of modern technology and practical features.

Technical Specifications