2018 Toyota Sienna III (facelift 2018) Dimensions, Size & Specs

The curb weight of the 2018 Toyota Sienna III facelift spans from 2009 kg to 2111 kg (approximately 4429 to 4653 pounds). This weight range affects fuel efficiency and handling characteristics: heavier versions may have slightly reduced fuel economy but often feature enhanced stability and ride comfort. The variation in curb weight is typically due to differences in equipment levels, drivetrain (e.g., all-wheel drive models are heavier), and options selected.

The 2018 Toyota Sienna III facelift offers 1107 liters (39.1 cubic feet) of luggage capacity with all seats in place, which is ample for typical family travel or grocery runs. When the rear seats are folded, the luggage space expands significantly to 4248 liters (150 cubic feet), allowing for transportation of large items, bulky cargo, or enhanced load capacity for trips or moving needs. This flexibility is a key feature of the minivan's design.

The ride height or ground clearance of the 2018 Toyota Sienna III facelift varies between 157 mm and 168 mm (roughly 6.2 to 6.6 inches). This moderate clearance balances easy entry and exit with adequate ability to handle uneven road surfaces, speed bumps, or light off-pavement conditions. However, it is not designed for serious off-roading but remains quite practical for everyday urban and suburban driving scenarios.

The Toyota Sienna III facelift (2018) comes with either 17-inch or 18-inch rims, paired with tires sized 235/60 R17 or 235/55 R18, respectively. Larger rims with lower-profile tires typically offer sharper handling and a sportier ride, while the 17-inch setup focuses on comfort and improved ride quality. These tire dimensions balance good grip, durability, and ride comfort suited for a minivan’s typical usage.

The 2018 Toyota Sienna III facelift measures 5095 mm (200.6 inches) in length and 1984 mm (78.1 inches) in width, making it a sizable vehicle. Most standard residential garages are about 5400 mm (18 feet) deep and 3000 mm (10 feet) wide, so while the Sienna fits lengthwise, the width is a tight fit, especially considering door opening space. Drivers may find maneuvering inside a garage slightly challenging but generally feasible with standard garage dimensions.

Compared to the preceding generation (Sienna III pre-facelift), the 2018 facelift maintains very similar overall dimensions, including length, width, and height. However, subtle refinements in interior packaging and configurational options enhance passenger comfort and cargo versatility. Technological and aesthetic updates also give the facelifted model a more modern feel, but dimension changes were minimal, preserving the spaciousness expected in a minivan.

The Toyota Sienna III facelift (2018) holds its own against competitor minivans like the Honda Odyssey and Chrysler Pacifica. With its 5095 mm length and 1984 mm width, it is among the larger minivans, offering superior interior space. Its impressive luggage capacity of 1107 liters with seats up and 4248 liters with seats folded is competitive, providing more cargo space than many rivals. This combination of size and practicality makes the Sienna a top choice for families seeking ample space.

The height range from 1750 mm to 1811 mm (68.9 to 71.3 inches) in the 2018 Toyota Sienna III facelift arises mainly due to differences in roof rails, suspension tuning, and model trims (including all-wheel-drive versions). Taller variants can offer increased cargo capacity vertically or better ground clearance while slightly affecting aerodynamic efficiency and ease of garage storage. The variations provide buyers options to prioritize more cargo headroom or a lower profile depending on their needs.

With a ground clearance ranging between 157 mm and 168 mm (6.2 to 6.6 inches), the Toyota Sienna III facelift (2018) is generally well-suited for urban and suburban environments, handling speed bumps, potholes, and moderately uneven roads comfortably. Although it is not designed for challenging off-road use, this clearance is sufficient for light gravel roads or wet conditions, making it versatile enough for typical family driving scenarios where minor terrain variation occurs.