The Greening of the Hybrid Crossover — Review — NYTimes.com

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Toyota Lexus RX400h (HSD)

2010 Lexus RX 350 and 450h

the Wheel | 2010 Lexus RX Quiet Zone With and Whistles (June 7, 2009)

Topics: Hybrid Vehicles

Lexus hybrid I’ve from the RX 400h crossover to the LS L sedan, struggled to go 25 miles on a of gas. Such middling hardly justified prices to $20,000 above the conventional

Hybrid fans can breathe around the new RX 450h, and for more its lowest-in-class emissions, including 20 less carbon dioxide than a 4-cylinder Honda This is the first Lexus that lives up to the hype and up big numbers: an impressive 35 miles a in town and 31 on the highway, for a combined of 32 m.p.g. over a week of a pre-production model. That the RX 450h the highest-mileage midsize I’ve driven #151; by

Those numbers took no effort and no nerdy hypermiling. I did full-throttle acceleration, coasted possible and tried to keep the Eco glowing on the dash.

Where hybrids have fallen of their government mileage the Lexus exceeded them: I the estimates of 30/28 m.p.g. in driving for the all-wheel-drive model I (The front-drive model has a 2 edge in town, at 32/28

So why did the new RX #151; which is bigger, and more powerful #151; do so Paul Williamsen, a Toyota spokesman, cites several The previous hybrid’s 3.3-liter, engine was the last survivor of an family that dates to The modernized 3.5-liter V-6 is more at 245 horsepower, yet much more (The combined horsepower gas and electricity jumps to 295 from

Like the Prius’s engine, the RX runs on the Atkinson cycle, for a low compression ratio, yet a relatively expansion ratio inside the In simple terms, it wastes energy to squeeze fuel and air and makes relatively more that mixture explodes.

The itself runs on an extremely oil, 0W-20. In modern lighter oils are an important factor, with less lost to friction. For the Lexus, friction allows an oil pump operates on less power.

The RX the sixth generation of Toyota Synergy Drive, the best yet at maximum current through the motor-generators #151; whether powering the car or capturing energy braking #151; without the getting out of control.

Toyota says its high-current are the world’s first auto with liquid cooling on sides #151; the transistors are between cooling layers of exchangers. In sports terms, it more playing time for the motors, with the engine to rest on the bench.

Starting at the front-wheel-drive hybrid features electric motors up front; the all-wheel-drive model adds a electric motor that the rear wheels when the tires slip or the driver the throttle. Both models cost about $5,000 than their gas-only

Toyota Lexus RX400h (HSD)

The electric assist helps the run from 0 to 60 m.p.h. in about 7.5 a close match for the gas version.

As go, the Lexus is now among those feel most like a car. The gas engine stops and almost imperceptibly. The regenerative still feel slightly but they’ve shed the squishy, feel of the past. There’s whirring and clicking from the motors inside the quiet


If the spoiled beauties in the sci-fi “Logan’s Run” had a car, would be it. Like its conventional RX 350 the RX 450 is ideal transportation in a tranquilized Everything, from low-effort to the creamiest leather this of a Bentley, is designed not to trouble its

The Lexus isn’t remotely but I’m convinced that most driving luxury crossovers lose sleep over lap

One more point, and this from a big fan of modern diesel in any mileage skirmish with the RX, rivals end up bagged and tagged. on the highway, the RX 450h beat German diesels #151; the Q7 TDI, BMW X5 xDrive 35d and Mercedes Bluetec #151; posting 31 versus a best-case 27 m.p.g. for the Over all, the Lexus the Teutonic trio by 10 m.p.g. at 32 vs. 22. Most notably, the Lexus doubled their economy in and suburban runs, where the managed only 16-19 versus 32-35 for the Lexus.

Bottom line, if you manage 30 in the RX hybrid #151; trust me, easy #151; and the typical 20 in the standard RX 350, the hybrid save you $700 a year in fuel (at a current national of $2.77 a gallon), balancing out its cost in roughly seven of ownership. You’d also cut gas consumption by a substantial 1,750 over those years, and far fewer stops to refuel.

Compared with the fuzzy of previous Lexus hybrids, the can actually add up.

More Articles in #x00bb; A version of this appeared in print on June 7, on page AU1 of the New York edition.

Toyota Lexus RX400h (HSD)
Toyota Lexus RX400h (HSD)
Toyota Lexus RX400h (HSD)
Toyota Lexus RX400h (HSD)
Toyota Lexus RX400h (HSD)

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