The Sleuth’s sources have provided interesting intel relating to the next-generation Sienna that’s expected to arrive in late 2020 as a 2021 model. Joining recently updated fleet members, Toyota’s eight-passenger people mover gets the latest TNGA modular platform, which is compatible with front-, rear- and all-wheel-drive applications (the latter of which is a Sienna option). The new architecture coincides with about a four-inch increase in length plus a corresponding gain in distance between the front and rear wheels. That should result in more legroom for third-row riders and greater cargo volume behind the seats. The Sienna’s new nosepiece will be similar to that of the 2020 Highlander utility vehicle. A 3.5-liter V-6 is expected to return, while a hybrid system — possibly of the plug-in variety — will be optional. Lastly, Siennas outfitted with autonomous (self-driving) technologies will undergo testing by ride-hailing company Uber in a year or two.

The current Toyota Sienna, pictured, will give way to a larger model with an optional hybrid powertrain. PHOTO: TOYOTA

Toyota’s less-mini minivan: