2008 Toyota Sienna Minivan Review & Performance

The Toyota Sienna has an imposing presence. Measuring 201 inches front to rear, on a 119-inch wheelbase, the Sienna is almost as long (although not nearly as tall or heavy) as a full-size Chevrolet Tahoe sport-utility vehicle. There's nothing mini about this van, most especially when its big, angular headlights are bearing down on the car ahead at dusk.

The Sienna was developed expressly for the United States, and it's a very American vehicle, regardless of what its brand name might suggest. It was designed in Southern California and engineered in Ann Arbor, Michigan; and it's built in Princeton, Indiana.

We find the basic shape of the Sienna appealing. Sneering grille work and those big headlights create the Sienna's first impression. The taillight clusters are big, too, in the name of visibility and safety. The windshield is huge, but long wipers and wiper-mounted washer nozzles are up to the worst conditions winter in the Snow Belt can dish out.

In side view, the Sienna's profile is clean. The slot for the sliding doors is cleverly hidden. Black window pillars and extensions on the steeply raked windshield lend a sleek appearance, and make the Sienna look even larger than it is. The overall impression of strength is undercut a bit by proportionally small wheels arches, however. That's one reason we like the look of the Sienna Limited best. Its standard 17-inch wheels and lower-profile tires maximize the impact of the small wheel wells, and its extra splash of chrome trim adds a bit of detail to the expanse of painted metal.

A nearly invisible electric element at the bottom of the windshield is available that keeps the wiper blades from freezing to the glass. Power-folding side mirrors are also available, and these feature bright puddle lights that illuminate when the doors are unlocked, both handy features.

bench. The small middle section of the bench can be moved nearly 13 inches closer to the front seats, putting children in child seats within arm's reach. When it's not being used, the center section converts into a big armrest.

Third-row seats have a rake adjustment, which increases their comfort. The Sienna offers more than enough storage space behind the third seat for a big grocery haul or a couple of sports bags; and the seat folds easily when you need more space. It's split 60/40, which adds versatility when hauling a combination of passengers and cargo, and particularly long items. It can also be stowed completely. The third-row seatbacks flip forward, then each seat folds easily into a deep well. It's a two-step operation that can be done with one hand, and headrests are integrated into the s?ToyotaSiennaInterior????? ?? ???? ????????? ???? ?? ?? ??????? ????? ??? ?? ???? ????????????????? ??????? ????? ?????????? ??? ?????? ?????? ????? ????? ???? ?? ????? ??????? ?????????? ???? ? ?????? ???? ???? ??? ?? ??? ?????? ???????? ???? ? ???????? ????? ???????? ?? ????? ???????? ??? ?? ????? ???? ???? ???? ?? ???? ??? ??????????????? ????? ????????? ??????? ???? ?????????????? ??? ?????? ??? ? ????? ???? ???? ????? ?????? ???? ? ????????? ??? ???? ??? ?eats so they don't have to be removed first (as on some minivans).

With hauling space maximized, the Sienna offers 148.9 cubic feet of cargo volume. That's just a little more than the in the latest Chrysler Town & Country, Dodge Caravan, or Honda Odyssey, and 12 cubic feet more than in even the extended-length Chevy Uplander. Perhaps more significantly, the Sienna has 40 cubic feet more cargo volume than a full-size SUV like the Chevy Tahoe (at 109 cubic feet). Folding the third row away leaves a flat cargo floor with tie-down hooks. We were able to slide in a six-foot ladder without moving the second-row seats. With its fold-flat front seat (standard on all but the CE), the Sienna can also accommodate long, narrow objects such as 2X4s up to 10 feet in length or slightly longer, entirely within its confines.

The Sienna is a big vehicle, yet it never feels overly bulky and it's never hard to handle or park. It's generally smooth, responsive and quiet, and compared to many family vehicles with comparable functional capability, it's relatively fuel efficient. An owner won't feel guilty or excessive driving it empty for errands. On long trips or school runs, loaded with people or just the driver, the Sienna is always comfortable and pleasant to drive.

The more powerful engine that's been used starting with the 2007 models nudged the Sienna closer to actually being fun. The 3.5-liter V6 features the latest in control and materials technology, including four-cam variable valve timing (Dual VVT-I in Toyota parlance). VVT-i helps reduce emissions and deliver more power without increasing fuel consumption. The 3.5-liter V6 generates 266 horsepower and 245 lb-ft of torque. That gives Sienna class-leading horsepower and puts it near the head of the class for torque.

We never considered previous Siennas underpowered, but the new engine makes it a hot rod among minivans. By the seat of our pants, we'd say that the Toyota is now the quickest accelerating minivan you can buy, bar none, despite its hefty overall weight (more than 4500 pounds for loaded all-wheel-drive models).

Yet the hot-rod quality extends beyond acceleration. The 3.5-liter V6 is so powerful that it responds aggressively, even abruptly, to anything more than a bit of gas. A driver may jerk some heads until he or she gets a bit of practice and adjusts to the throttle response. Moreover, peak torque and particularly peak horsepower come fairly high in the engine's rpm range. We wanted to keep the gas pedal floored well past respectful cruising speeds just to keep the engine pulling toward peak output and to feel maximum acceleration. The V6 remains smooth and relatively quiet all the way to the redline on the tachometer.

Gear ratios in Sienna's five-speed automatic help exploit all that power, and the engine and transmission interact nicely. At steady speeds, the transmission keeps the engine purring at fairly low rpm. Yet if the driver floors the accelerator, the transmission immediately kicks down a gear or two, and holds that gear all the way to the redline before shifting up again smoothly and smartly. A low first gear offers quicker response off the line; the overdrive fifth gear means lower engine speeds when cruising, which translates into less engine noise and better gas mileage. Even the EPA's new and more pessimistic estimates credit the FWD Sienna with 17/23 mpg city/highway; and the AWD model with 17/21.

The same balance of smoothness and response in the engine/transmission package applies to the Sienna's ride and handling. On curving mountain roads in Southern California, the Sienna drives more like a car than a minivan or sport-utility. Its steering is responsive and there's only a little body roll, or lean, when cornering.

Transient response is good, meaning the Sienna can quickly change directions without losing composure. It feels stable at high speeds. The steering is nice and light at low speeds. The Sienna is easy to maneuver through tight parking lots or make U-turns; that's thanks to a turning radius of less than 37 feet, tighter than most minivans.

The ride, too, is generally very comfortable, helped by a long wheelbase that limits chop, or bounce, over recurring pavement joints. On smooth pavement, few will notice any more suspension movement or roughness than one experiences in a typical sedan. On rough pavement, the Sienna's solid rear axle makes its presence known, lacking the sophistication of an independent rear suspension.

Braking is smooth and the brakes perform well. Making big 16-inch wheels standard equipment allowed Toyota to equip Sienna with big disc brakes. It's also equipped with all the latest electronics: anti-lock brakes (ABS) with electronic brake-force distribution (EBD) and Brake Assist. EBD distributes the braking force to the tires with the most traction for quicker, more stable stops. Brake Assist maintains full brake pressure during emergency stopping situations, even if the driver inadvertently reduces pedal pressure in the excitement. All this alphabet soup adds up to stable, controlled stopping ability when you really need it.

Toyota's Vehicle Stability Control (VSC) with Traction Control is also now standard on all Siennas. Our real-world experience, backed by a number of studies, suggests that such electronic stability systems do help prevent accidents. VSC senses a potential skid and uses the brakes to compensate and correct the vehicle's trajectory. Traction control helps reduce tire slippage during acceleration. In short, it helps you maintain control of the car.

Given all these active safety features, we recommend the Sienna's optional all-wheel-drive system only to drivers who live in rural areas and travel frequently in deep snow or on gravel roads. All-wheel drive is vastly superior on snow and ice, but a front-drive Sienna can handle most winter driving in the Snow Belt and the AWD costs a few miles per gallon.

The 2008 Toyota Sienna is offered in four trim levels, from relatively inexpensive to true luxury grade. All share a 266-hp 3.5-liter V6 and five-speed automatic transmission. All come configured for seven passengers, though the lower-trim CE and LE models are available with seating for eight. All but the base CE are available with all-wheel drive (AWD).

Still, even the CE ($24,340) comes with nearly all the essentials, including dual-zone (front and rear) air conditioning; power windows, door locks and mirrors; sliding doors on both sides; keyless entry; and AM/FM/CD stereo with six speakers and an auxiliary jack for MP3 players. The upholstery is a vinyl/fabric combo, and the wheels are 16-inch steel with hubcaps. Second-row captain's chairs and a 60/40 Split & Stow third-row bench seat are standard. A second-row three-place bench seat is optional ($150). CE buyers can also add a package ($285) consisting of cruise control and a roof rack.

Sienna LE ($25,865) is the most popular model. It adds nicer cloth fabric, audio controls on the steering wheel, a 6CD changer, cruise control, heated mirrors, a roof rack, privacy glass, illuminated vanity mirrors, an engine immobilizer, a fold-flat front passenger seat, and other features. A second-row bench seat that seats three is optional.

The LE AWD ($29,035) adds Toyota's full-time all-wheel-drive system. Like other all-wheel-drive Siennas, it comes packaged with run-flat tires on 17-inch alloy wheels, daytime running lights (DRLs), and a windshield wiper de-icer. It does not offer eight-passenger seating.

Sienna XLE ($29,525) and XLE AWD ($32,285) are more luxurious, with yet another level of upgraded fabric; standard power sliding side doors and power liftgate; tri-zone automatic climate control (driver, front passenger, and rear compartment); eight-way power adjustable driver's seat; JBL Synthesis 360-watt audio with 10 speakers, 6CD changer, rear seat audio controls, and Bluetooth; an overhead console with trip computer and universal garage-door opener; fog lights; leather-wrapped steering wheel; and more. The front-drive XLE comes with 16-inch alloy wheels.

The Sienna Limited ($35,465) and Limited AWD ($37,665) are equipped like a full-on luxury sedan, adding leather upholstery and features such as Dynamic Laser Cruise Control, a power moonroof, second- and third- row sunshades, high intensity discharge (HID) headlights, heated front seats with memory, front and rear park assist, auto-dimming electrochromic mirrors (inside and driver's side), and side mirrors with puddle lamps and integrated turn signals. The front-drive Limited comes with the 17-inch alloys and DRLs. Power folding for the third row is optional ($750).

A Tow Prep Package comes standard on all models consisting of a heavy-duty fan and radiator, power steering oil cooler, and 150-amp alternator; but a receiver and wiring harness cost extra ($220). DVD entertainment, DVD navigation, rear sonar and camera systems, and many other extras are available, bundled into packages specific to each trim level.

Safety features include frontal airbags, front side-impact airbags and curtain-style airbags designed to provide head protection for outboard passengers in all three rows of seats. All models are also equipped with a tire-pressure monitor and anti-lock brakes (ABS) with electronic brake-force distribution and brake assist, which together help the driver minimize stopping distance and maintain control when braking and swerving to avoid an accident. Toyota's Vehicle Stability Control (VSC) skid-control system with traction control comes standard on all models.