BUICK REGAL GS: GRAN SPORT REDUX!


Buick’s luxury sport sedan hits 162 mph in the Nevada Open Road Challenge, finishes second in 135-mph class.






It’s déjà vu all over again for Buick’s iconic Gran Sport high-performance nameplate. While an earlier midsize GS sport sedan was powered by a supercharged 3.8 V6, the latest iteration is also boosted, this time via turbocharger. And a couple fewer cylinders. The Regal GS piloted by Rietow and Townsend was a stock 2012 model, with modifications limited to safety equipment such as a roll hoop and five-point harness seat belts, as well as data collection computers.



A pair of Buick engineers piloted a stock four-cylinder Ecotec 2.0-Liter-powered Regal GS to a second-place finish in the 135-mph class of this past weekend’s Nevada Open Road Challenge, finishing within 0.4 seconds of their 40-minute target time. The Nevada Open Road Challenge takes place on a remote, two-lane, 90-mile-long segment of State Highway 318. Rather than a test of who finishes the fastest, the goal is average speed consistency. Podium finishers often are separated by hundredths of a second.



“The Regal GS is an incredibly capable performance sedan,” said Rietow. “In addition to the strong acceleration from the engine, the chassis maintained its composure well while running across these closed public roads at high speeds. Likewise, the Brembo brakes were easy to trust coming hot into a corner.”



The podium finish follows a first place title claimed by the same team – driver Bill Rietow and navigator John Townsend, above, – in the 120-mph class last fall. Success was based on balancing low-speed sections of the course with running the Regal at top speed for a period of time. During that segment, a radar trap controlled by race operators verified a speed of 162 mph for the 270-horsepower Buick. The turbocharged four cylinder 2.0 Buick Ecotec was named one of 2012 “10 Best Engines” for North America by Ward’s AutoWorld.



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