Significant available safety features include a backup camera, front and rear parking sensors, a blind spot warning system and a Pre-Collision System that alerts the driver and tightens the seat belt if a possible collision is detected. Standard safety features include antilock brakes, active front head restraints, side-impact airbags for the front seats, side curtain airbags for all three rows and an electronic stability system with traction control. Significant available features include a removable center second-row seat, a power moonroof, heated leather seats, a navigation system, foglights, power sliding doors, tri-zone automatic climate control, a power liftgate and a rear-seat entertainment system with a 16.4-inch screen. Significant standard features include 17-, 18- or 19-inch alloy wheels, a rear spoiler, seven or eight seats, cruise control, unique grille designs by trim level, a CD stereo with MP3 jack, projector-beam headlamps, daytime running lights, removable second-row captain's chairs and a tilt/telescoping steering wheel. The 2014 Toyota Sienna comes standard with a 266-horsepower, 3.5-liter V-6 engine paired with a six-speed automatic transmission. What Features in the 2014 Toyota Sienna Are Most Important? Wind and road noise aren't what make it loud it's the excessive engine noise. The Sienna's drivetrain is also smoother but not the quietest of the competition. While the most fuel-efficient minivan in the class is the Odyssey, with an EPA rating of 19/28 mpg city/highway, the two-wheel-drive Sienna is rated 18/25 mpg. The Sienna is the only minivan with available all-wheel drive. The seating is heavy and doesn't come equipped with a power-folding feature until the Limited trim. Though there's plenty of room, accessing the third row and folding the second row flat are both a workout. Where the Sienna stands out for the wrong reason is cargo versatility. The maximum cargo space provided by the Sienna (150 cubic feet) beats out the Chrysler Town & Country (143.8) and the Honda Odyssey (148.5). The higher the trim level, the better quality the materials, as the Limited replaces the plastic with rich-looking imitation wood. The Sienna's first row is open and inviting, but the dashboard is all hard plastic. How Does the 2014 Toyota Sienna Compare to Other Minivans? There are no significant changes to the 2014 Toyota Sienna. Front-wheel drive is standard, but the Sienna is unique among minivans in offering optional all-wheel drive. Trim levels include the L, LE, XLE, SE and Limited. The 2014 Toyota Sienna is a seven- or eight-seat minivan that competes with the Honda Odyssey, Nissan Quest and Chrysler's twins, the Town & Country and Dodge Grand Caravan.