A more dynamic, driver-focused version of the Lexus LS sedan. Currently available only on short-wheelbase, rear-wheel-drive models, the Sport package adds functional upgrades such as the IS F’s quicker-shifting version of the standard LS’s eight-speed automatic gearbox—which includes full manual control via paddle shifters or the console shifter, along with lock-up clutches for all gears except first—as well as larger Brembo brakes all around. The electric power-steering system has been tweaked for better turn-in response, while the adjustable, sport-tuned air suspension has firmer anti-roll bars and specific tuning for the dampers. Split 10-spoke, 19-inch wheels with all-season tires round out the performance improvements. Lower body extensions and a darkened honeycomb grille differentiate the exterior, while the interior is only offered in a two-tone, black/saddle configuration with unique matte-finished wood trim.

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There are luxurious cars, and there are fuel-efficient cars. There are even some that offer moderate levels of both characteristics. But no vehicle has managed—or even attempted—to take luxury and fuel economy simultaneously to such high levels as has the 2010 Lexus HS250h, the industry’s first dedicated luxury hybrid. Think of it as the Prius of Lexuses or the Lexus of Priuses—your choice—and you won’t be far off.

If any company can pull it off, it’s Lexus. But by Lexus’s own admission, the HS250h is not one of the brand’s so-called no-compromises hybrids—such as the RX450h, the GS450h, and the LS600h—which supplement well-endowed engines with electric power for a driving experience that feels befitting of their luxurious trappings while still delivering better fuel economy and lower emissions. By inference, then, is Lexus suggesting that the HS250h is perhaps a “compromised” hybrid? After our first drive in one on the roads around Newport Beach, California, it became clearly evident that that’s what it is.

“Mooing” Motor and Un-Lexus-y Loudness

So what happens when Toyota takes the small-car chassis on which it also bases the Prius and adds hundreds of pounds’ worth of Euro-market Toyota Avensis–based sheetmetal and luxo gewgaws? Well, for one thing, it gets slower—which is why Lexus deemed the Prius’s 98-hp, 1.8-liter four-cylinder inadequate and replaced it with the Camry hybrid’s Atkinson-cycle, 2.4-liter unit with 147 hp and 138 lb-ft of torque. The nickel-metal hydride battery pack and electric motor conspire with the engine for a system output of 187 hp (the 3050-pound Prius makes only 134 combined horsepower). Hustling the 3740-pound HS250h to 60 mph takes 8.4 seconds, which is 1.4 seconds faster than the last Prius we tested. The HS pays the piper in fuel economy, though, as its EPA city/highway ratings of 35/34 mpg doesn’t even come close to the Prius’s 51/48 figures.

In spite of the HS250h’s alleged acceleration advantage, the Prius and the HS250h feel virtually identical from behind the electrically assisted steering wheel (which, in the HS250h, unlike in the Prius, is thankfully not ovular). Road feel is pretty much zero, even with the optional 18-inch wheels and 225/45-series tires. However, the steering response is direct and reasonably quick. At the same time, the interior sound quality isn’t exactly up to the traditional Lexus-isolationist level. We wish it were, for as much as we like to hear and feel what’s going on beneath us, what we hear and feel inside the HS250h are the droning “mooOOOOooo” of the engine-and-CVT combination during acceleration, along with a fair amount of tire noise and low-level reverberations from road impacts. We understand that less weight is important for any hybrid in the interest of fuel economy—and indeed for any vehicle—but even we would like a few more pounds of sound-deadening material in the HS250h so we don’t have to hear the powertrain’s pitiful drone. We suspect anyone who’s ever owned a whisper-quiet Lexus would agree.

Think you can creep around in EV mode to shut things up? Technically, you can for up to two or three miles, so long as the battery remains above a 50-percent state of charge. This requires the tenderest of right feet (which we admit we don’t have) and only works when not accelerating at speeds higher than 20 mph. Otherwise, the engine fires up.

The HS250h subscribes to the latest craze in hybrids in offering selectable “eco” and “power” settings in addition to a normal mode. Eco mode accelerates battery recharging and retards throttle response to maximize efficiency; power mode does the opposite. Putzing around Newport Beach in the HS250h, we noticed a canyon of difference between the two modes and a commensurate difference between the resulting fuel economy, as well. Employing our best hypermiling techniques in eco mode for many miles, we eked the HS250 to over 42 mpg—although we assure you we made few friends among our fellow drivers along the way. In power mode, we enjoyed crisper acceleration, of course, but had a hard time getting mileage anywhere above the high 20s.

A Little More Luxury, a Little Less Practicality

Okay, so dynamically, the HS250h leaves a lot to be desired. But what about luxury? The good news is that the HS250h offers many more luxury fitments than we usually associate with hybrids. Problem is, so does the 2010 Prius. The list of features that come standard on the HS is long, but not much longer than that of a reasonably well-optioned Prius. And there are many options—such as the odd-but-effective “lane keep assist” feature, adaptive cruise control with collision mitigation, and swiveling headlamps—that can also be added to the Prius. Exclusive to the HS250h, however, are such options as Lexus’s nifty “remote touch” controller, a wide-view front monitor, a head-up display, and a Mark Levinson surround-sound audio system. The HS250h debuts Lexus’s new OnStar-like Enform system, which makes real live people available to beam directions to your navigation system, displays sports and stock information, and allows owners to input up to 100 destinations into the car from their computer rather than from the driver’s seat.

What you won’t find are the roof-mounted solar panels that are available on the lower-priced Prius. There are other compromises, too. The base textured leather upholstery feels more like leatherette and makes the upgraded semi-aniline leather a worthwhile upgrade. Color combos are slick, especially the high-contrast cream leather with black carpeting, but there remains a certain sense of thin-skinned cheapness to the materials that reveal the car’s light-weight-over-substance priority set. And with the batteries located between the rear seatback and trunk, the cargo area is surprisingly small and lacks the accessibility of the Prius’s hatchback. (To be fair, the HS has the largest access slot of any Lexus sedan.)

We’d Rather Have a Prius (There, We Said It)

Lexus claims that a not-insignificant 60 percent of entry-luxury customers would consider a hybrid if it were available. If that is the truth, this car should sell reasonably well. Still, it’s hard to say that the HS250h does the hybrid thing—i.e., get great mileage and make splashy green statements—as well as the Prius. Nor does the HS250h do the luxury thing as well as other Lexuses. It is less practical than the Prius while returning exactly as much driving satisfaction—which is to say very little—all without the green halo effect that has made the Prius the favorite of the environmentally inclined. Indeed, if the HS250h isn’t going to drive any better than the Prius, we’d rather have the mileage—and the lower monthly payment—of a Prius instead.

So, the HS250h is a “compromises hybrid” that strikes a compromise between good mileage and a fair amount of high-brow comfort features. We can think of other vehicles—the Mercedes-Benz E-class diesel or even a loaded Ford Fusion hybrid—that strike that balance just as well, and drive better in the process.

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The model lineups of luxury automakers are fairly predictable. The six-cylinder is the entry-level car and the bestselling. The V-8 is a more powerful, higher-performing version and costs more. Then there’s Lexus, which until now had reversed this logic with its GS, a competitor to the BMW 5-series, Mercedes E-class, and Infiniti M35/M45.

The most powerful model in the lineup was a hybrid, the GS450h, making 339 horsepower. The V-6–engined GS350 made 303 horses, and the V-8 GS430 was good for just 290 in 2007. Recognizing that buyers of the V-8 GS might want more firepower for their money, Lexus has now rectified this anomaly by fitting the GS with the 4.6-liter V-8 and eight-speed automatic transmission from the big LS460. Hence, we have the GS460 shown here, with 342 horsepower, a comfortable buffer of 39 horses over the GS350 (and 52 more than the GS430).

The extra ponies are good for a 0-to-60-mph time of 5.5 seconds, 0.2 quicker than the last GS430 we tested and identical to the GS450h. Over the standing quarter-mile, the advantage extends to 0.2 second over the GS450h and 0.5 second over the GS430. We managed 16 mpg with the 460, 1 mpg worse than in the 430 and four fewer than in the 450h.
In most regards, the GS460 is a nice piece. The interior is skillfully wrought, the car is beautifully built, and the powertrain is a gem. As long as the road is smooth, it’s a serene ride, but sealed cracks and potholes in the pavement kill the serenity. Even in its soft setting, the adjustable suspension can’t compensate for the reinforced sidewalls of the Dunlop run-flat tires. Read more »