Driven: 2010 Toyota Prius…77 mpg!

July 28, 2009
2010 Toyota Prius

2010 Toyota Prius

Enlarge Photo

2010 Toyota Prius

2010 Toyota Prius

Enlarge Photo

2010 Toyota Prius

2010 Toyota Prius

Enlarge Photo

2010 Toyota Prius combination meter

2010 Toyota Prius combination meter

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2010 Toyota Prius two-tone leather interior

2010 Toyota Prius two-tone leather interior

Enlarge Photo

Early this year TheCarConnection.com brought you first driving impressions for the redesigned 2010 Toyota Prius, and in the months following the Prius has been covered in exhaustive detail by companion High Gear Media site AllAboutPrius.com.

In his first drive report of the 2010 Prius, editor Marty Padgett reported getting nearly 70 mpg "without even really trying—just coasting to stops, accelerating very gradually and using the Prius' EV mode to coast into our host hotel."

Sure enough, I did even better in a follow-up on familiar roads—albeit with some sacrifices. In unseasonable 100-degree heat, we turned the A/C off altogether and then engaged the Prius' Eco mode, which essentially smoothes out powertrain response, keeps electric-only power on a little longer, and adds a rubber-band-like "Are you sure?" to every downward push of the throttle pedal. Taking the 2010 Prius on a 40-mile fuel-economy loop—including suburban stop-and-go, a highway stint, and some low-speed urban driving—we averaged 77.2 mpg simply by taking off very slowly, keeping a light throttle foot, "pulsing and gliding" a bit, and coasting whenever possible, but otherwise keeping up with traffic. If we had driven strictly by the instant bar-graph display, crept up to lights, and blocked traffic going up hills, we would have easily cracked 80.

Before anyone cries foul, I should add that the battery indicator was at about the same one-third level when we started and finished.

That high-mileage loop aside, for the remainder of the week TheCarConnection.com averaged about 53 miles per gallon in nearly 140 miles of mixed driving, split between short trips around town and a longer highway run that would be equivalent to what many commuters do. Making the number all the more impressive was that we ran most of it with the A/C on, in normal mode, and we even ran in Power mode for a while, with some full-throttle takeoffs included.

The new 2010 Toyota Prius is rated at 51 mpg city, 48 highway—up from 48/45 for the outgoing 2009 model. Its host of powertrain improvements include a larger, 1.8-liter four-cylinder engine, numerous weight-saving measures, and broadened use of the powertrain's electric-only mode.

The last-generation Prius set a new standard for powertrain smoothness, with almost imperceptible transitions between power sources. At first we didn't think the Prius made gains in refinement, but this broken-in production test car felt much smoother than the brand-spanking new prototypes we drove a few months ago.

The most significant downside to the driving experience in the 2010 Toyota Prius remains that it just doesn't handle particularly well; although slight improvements have been made in terms of how it steers and maneuvers; first-time Prius drivers will still feel like the steering is controlled remotely, and there are times when a Logitech gaming wheel gives more realistic feedback. At cruising speeds we kept having to make small adjustments to keep our path straight on the highway, and the artificial weight that the steering would gather off-center seemed to have little relation to the tightness of the corner or the g-forces the car was experiencing. With the powertrain integration as smooth and unobtrusive as it is, the odd steering feel is honestly what most drivers will have issue with.

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