2011 Toyota Sienna Driving Impressions

We spent a day in Laguna Nigel, California, testing the new Sienna. Our driving routes varied, taking us along the scenic Pacific Coast highway, through Dana Point harbor, and up the notoriously winding Ortega Highway. We started with a four-cylinder LE, moved into a LE V6, then an SE V6, and finally, a Limited with everything on it. Each model has a slightly different character, with the SE and Limited being the most distinctive.

The Sienna has electric power steering, which allowed engineers to tune the steering response for the different models. The Sienna SE has the tightest, most accurate and responsive steering of the models, along with the best handling and the best chassis control. The Limited model had the most power assist in the steering, and the chassis was tuned for comfort. Sienna LE and XLE models are somewhere in between, with steering and chassis priorities balanced 50/50 between comfort and handling.

Of the Sienna models we drove, the SE is by far the most appealing from a driving dynamics point of view. It steers exceptionally well for a minivan, more like a sports sedan. It corners without much body roll, with a nice crisp turn-in and a clean, stable track through the bends. This responsive personality is achieved with not too much ride tradeoff in the process. The 19-inch wheels and lower profile tires do allow a bit more road feel into the cabin, but it's not annoying, and the extra confidence allowed us to drive mountain roads at higher speeds in a relaxed manner. Frankly, we wish all minivans handled this well. We're not sure if a good-handling minivan is likely to become a major player in the marketplace, but if it is, the SE is a home run. We noticed the brakes become a little touchy when we hustled the SE down the Ortega Highway, but they don't lack for stopping power. All in all, we'd say the SE is a fun and responsive car to operate, in an attractive package. Drivers who drive aggressively will like the SE.

We also drove a four-cylinder LE and a V6 LE to get a sense of the difference between the two engines. The verdict: driven around town, and without a full load, there is not much difference. The four-cylinder is definitely peppy and powers the Sienna well around town and through traffic. It has slightly lower final drive gearing, but shows 2000 rpm at 60 mph, which is not appreciably different from the V6. There is a little more vibration coming from the four-cylinder when you ask it to work hard, but other than that, the Sienna drives well with either engine. We would expect the V6 to be the smoother engine at highway speeds, with better passing power, but we think the two would be reasonably comparable the rest of the time.

The 2.7-liter four-cylinder makes 187 horsepower, but delivers its torque peak at 4100 rpm, about 600 rpm earlier than the V6, so it's quite driveable. In terms of fuel economy, with EPA ratings of 19/26/22 City/Highway/Combined, the four-cylinder is about two mpg better than the V6 overall, and one mpg better around town.

We did not have a chance to drive an all-wheel-drive Sienna AWD, but it has the same system as in the Toyota Highlander SUV, which biases torque based on information from wheel sensors. When wheel slip is detected, torque distribution is adjusted accordingly, providing better grip on icy or snowy roads. A key difference is that AWD models have run-flat tires and no spare. The tires, specially developed by Bridgestone, offer improved safety and performance in the event of a puncture through unique cooling ribs on the sidewall. They are designed to provide the capability to safely drive to a repair location. We would expect that they would ride a little harder than regular tires, and wear a little differently because of their unique construction and rubber compound. Our conclusion is that the AWD would be worth the investment in areas where weather conditions demand superior traction, but perhaps not attractive for owners who don't live in four-season climates.

Our last test loop of the day was in a Sienna Limited, which is the top of the line. It has the nicest interior; undeniably comfortable and well equipped. We immediately noticed the steering was tuned for ease of operation, with very high levels of power assist. That made the Limited easy to park and maneuver at low speeds, but it also required more attention to keep in the center of the lane driving quickly down a mountain road. The Limited is the kind of luxury wagon we would drive with hands in our lap, steering with the wrist, just taking it nice and easy.

All Sienna models have huge rear doors for easy entry. Access to the second and third row is easier than any minivan we can recall, because the door is so large, and headroom is good. Also, because the second row seats are on long tracks, it's possible to move them all the way forward to access the third row, or all the way back to walk into the passenger area. We think it would be possible for an average-size person to step in with a car seat, fasten it down and walk out, without having to kneel or crawl around.

Pretty much, all the Sienna models we drove were well insulated against wind, engine, and road noise. Toyota engineers used every trick in the book, padding, phase-shifting techniques, noise cancellation, sound absorbing materials and better engineered seals in the doors, among others, to keep noise to an absolute minimum.

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