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Which is more fuel efficient, driving with a pickup's tailgate up or down?

Thanks to the smoke wand in the wind tunnel, you can actually see the difference in our video.
Should you drive with your pickup truck's tailgate up or down? It's an age-old controversy that's divided drivers for decades. Traditionalists will swear you should leave the tailgate down. Makes sense, right? It would seem to let the air flow more cleanly over the body and through the bed. But there's also a school of thought that argues trucks are designed to look and operate in a specific manner, and modern design techniques can help channel the airflow properly. So don't mess with all of that: Leave the tailgate up.

2022 Chevy Silverado ZR2 vs Ford F-150 Raptor and Ram 1500 TRX Spec Comparison

The 2022 Chevy Silverado refresh brings a new top dog off-road Chevy, the Silverado ZR2. It has the biggest V8 available, flashy looks, trick suspension and other off-road goodies. And naturally, that means people will be comparing it with the other top-rung off-road trucks, the Ford F-150 Raptor and the Ram 1500 TRX. As such, we've assembled the specifications available so far to see how the three super trucks compare. Having just been revealed, there are a few things we don't know about the ZR2, such as fuel economy and some other suspension details, but we know quite a lot. And from what we know, the ZR2 has some interesting positives and negatives compared to the other trucks. First, it's pretty clear that the ZR2 isn't as extreme as the Raptor and TRX. We wouldn't be surprised if Chevrolet insists they aren't direct competitors. Specifically it has the least power and torque by a fair margin, the smallest tires and the least ground clearance. Still, it's not completely fighting with an arm tied behind its back. It's the narrowest by a significant margin, which is good for tighter trails. It also has the best towing and payload capacity, and the approach, break-over and departure angles are quite competitive despite the "little" tires. It's also the only one to boast a locking front differential in addition to a rear locker. The Raptor can be had with a limited-slip front differential, and the TRX only gets an open front differential. Check out all the specific numbers in the chart below, as well as additional stories on the trucks featured below. Other reviews and deep dives about the new Silverado, F-150 Raptor and Ram 1500 TRX 2022 Chevy Silverado 1500 Reveal In addition to the new ZR2, the Silverado line also gets new interiors, an upgraded four-cylinder and other updates.   2021 Ram 1500 TRX First Drive Review Our review of the Raptor's chief competitor, the mighty TRX. That just sounds like we're talking about Jurassic Park.   2021 Ram TRX Suspension Deep Dive and RTI ramp test Follow along with engineer Dan Edmunds as he takes you under the TRX and explains everything there is to know about its suspension -- and how it's able to do what it does.

Ford Focus RS will go global, come to US

"We are transforming our approach to performance." – Mark Fields Ford will launch a new high-performance Focus RS around the world, including the United States, company CEO Mark Fields confirmed at a press conference Thursday morning. It is expected to debut in January at the Detroit Auto Show, though launch timing is unclear. "We are transforming our approach to performance," Fields said. The RS will serve as a hotter variant of the Focus, which will be redesigned next year as part of Ford's 16 product launches. Our spy photographers have already captured images of a purported RS, which you can see above. Ford last sold a Focus RS in Europe in 2009, and it continues the long lineage of RS-badged performance cars, which dates to 1968. "The RS has a significant heritage and pedigree," Ford product chief Raj Nair said. The Focus RS will slot above the Focus ST, which will continue, a spokesman said. The ST runs a turbocharged, 252-horsepower four-cylinder that's paired with a six-speed manual transmission. It also has chassis and design upgrades to reinforce its athletic dynamics. The most recent intel suggests that the new RS could use Ford's 2.3-liter turbo-four, tuned to anywhere from 325 to 350 hp. All-wheel drive is also rumored to be part of the new RS formula. Meanwhile, Ford announced it is putting all of its sporty units under the umbrella name of "Ford Performance," which will be led by Mustang chief engineer Dave Pericak. Ford Performance will include Ford Racing, SVT (which is responsible for the Raptor and Shelby GT350) and RS. "We're changing Ford's performance business," Nair said. Ford is placing a renewed emphasis on performance, as the customers tend to be younger, wealthier and better educated, Nair said. In other news, Nair said the company is working on a Raptor version of the new, aluminum-bodied F-150, which launched this year. "I want to get it out as quickly as we can," he said.