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3
Sep
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21
Aug




Chevrolet announces performance results and pricing for the new ultimate-performance Corvette.
DETROIT – The official Corvette ZR1 numbers are in and they’re good. Very good:
• $103,300 MSRP (including $850 destination charge)
• EPA-estimated fuel economy of 14 city and 20 highway
• 0-60 mph in 3.4 seconds
• 0-100 mph in 7.0 seconds
• Quarter-mile elapsed time of 11.3 seconds at 131 mph
The Corvette ZR1 also has a top speed of 205 mph (330 km/h), making it the fastest Corvette ever produced and ranking it among the global super cars of commensurate performance. None of those other super cars, however, equals the ZR1’s performance-per-dollar ratio.“The ZR1 is an incredible machine by any measure,” said Ed Peper, North American Vice President, Chevrolet. “There’s simply no other vehicle in the world that does a better job of balancing performance, price and fuel economy.”
Performance perspective
The Corvette ZR1’s 0-60 performance is 0.3-second quicker than the already-quick Corvette Z06 and the 0-100-mph performance is nearly a full second quicker – 7 seconds vs. the Z06’s 7.9 seconds. It is performance that is equal to or better than many super cars costing substantially more.
“A favorable power-to-weight ratio gives the ZR1 an advantage over the competition and performance that has to be experienced to fully appreciate,” said Tom Wallace, Corvette chief engineer. “Of course, on a racetrack, drivers of competitors’ cars may appreciate the ZR1 in a whole different manner.”
And the racetrack isn’t the only place where the ZR1 trumps its super-car competitors – it beats them at the gas pump, too. According to fueleconomy.gov, the ZR1’s EPA-rated 14 city and 20 highway mileage ratings beat 2008 competitors such as the Ferrari 599 GTB Fiorano (11 city / 15 highway); the Lamborghini Murcielago (8 city / 13 highway) and the Aston Martin V8 Vantage (12 city / 19 highway). They’re competitive with the Dodge Viper (13 city / 22 highway) and the Porsche 911 GT3 (15 city / 22 highway).
Under the carbon-fiber hood a new LS9 6.2L supercharged small-block engine powers the ZR1’s performance capability. Heavy-duty and lightweight reciprocating components support high-rpm performance, while a new, sixth-generation supercharger (and complementing charge-cooling system) helps the LS9 make big power and torque across the rpm range. The engine is hand-assembled at GM’s Performance Build Center, in Wixom, Mich.In addition to the LS9 engine, the ZR1 is a technology powerhouse, designed with lightweight and unique components that reinforce its performance with a confidant feel on either a highway or road course.
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12
Aug
The XFE — or extra fuel economy — versions of the 2009 Chevrolet Silverado and GMC Sierra trucks and Chevrolet Tahoe and GMC Yukon SUVs will get one mile per gallon more in both city and highway fuel economy than non-XFE versions. The boost will give them a total of 15 miles per gallon in the city and 21 on the highway.
On XFE models, GM improved the aerodynamics by extending the front lower air dam, lowering the suspension and revising the chassis tuning. The automaker also reduced the mass with aluminum parts, including an aluminum spare wheel and 17-inch aluminum wheels, gave the vehicles low rolling resistance tires and powered them with a 5.3-liter, ethanol-capable V-8 engine that has an aluminum cylinder block and heads.
GM stressed that the vehicles still have the same towing capability.
The XFE pickups and SUVs will be available in the fourth quarter of this year. GM spokesman Brian Goebel wouldn’t say how much more they will cost than non-XFE versions.
GM began offering an XFE version of its Chevrolet Cobalt small car earlier this year. The automaker said it sped development of the XFE trucks and SUVs because of consumer demand for more fuel-efficient vehicles. GM’s truck and SUV sales fell 23 percent in the first seven months of this year.
GM also offers hybrid versions of the Tahoe and Yukon and plans to bring out hybrid versions of the Silverado and Sierra in the first half of 2009. The company said last week that about 4 percent of its Tahoe and Yukon sales have been hybrids so far this year.