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Top horsepower-per-dollar cars in 2017

Bang for the buck. That quasi-scientific statistic is bandied about by motor heads everywhere from classrooms to barrooms, though the truth of the matter is that it's exceedingly complex to measure. A fair performance-per-dollar index would include something like cross-referencing MSRP (Manufacturers Suggested Retail Price) with point-to-point times on a track or driving route, which is obviously hard to do comprehensively. But, for the sheer joy of talking about cars and playing with a big spreadsheet, there's always the horsepower-per-dollar index, which is more straightforward, albeit hilariously flawed. There are vagaries even with this simple formula, of course: MSRP for vehicles can change at a moment's notice, to say nothing of the bottom-line shifting that happens with local deals or showroom negotiation. For this list we're running with the straight MSRP wherever possible, and as recently reported as we can get it. All the vehicles on this list are 2017 models, and all trims are reported where the lowest price and differing power levels intersect. Some choices were made for personal preference and some for sanity, avoiding things like all 48 trim levels of the Ford Transit, all with the same horsepower). If this list were a simple top ten, or even a top fifty, you'd be bored to tears with all the red, white and blue that is represented. Following perfectly with conventional wisdom, American cars really do lead the world where hp/$ is concerned. So, for the sake of variety (and the sheer joy of seeing a minivan 'win' one round of this thing) I've sorted out some top five and bottom five lists for broad power categories. Let's dive in. Less Than 100 Horsepower Okay, okay, this is hardly a category we'll grant you. But we've often tried to click off all the sub-100-hp cars on sale in the US, and making this list gave us an excuse. It also illustrates that none of these smallish vehicles bring cheap horsepower to the table - for that you'll need a motorcycle. The segment-leading Chevy Spark (above) asks just over $139 for each hp, and that Smart Fortwo Electric Drive has hp on sale for about the same price as its very distant family cousin, the Mercedes-Benz SL65 AMG (insert your favorite Smart joke here... we know you want to).

Bentley plotting rear-drive Continental GT3-R?

Coupe, convertible or Flying Spur sedan: no matter what body-style you get, or what engine you specify, the Bentley Continental comes with all-wheel drive. It's been that way since the model line was first introduced a dozen years ago. But that looks poised to change... at least for one notable exception. According to Autocar, Bentley is all but certain to launch a rear-drive version of the Continental GT3-R sometime next year, ditching the front half of the drivetrain to cut a good 440 pounds off the curb weight to make it the lightest Conti yet. The Continental GT3-R launched last year with less weight and more power, along with a stiffer suspension, upgraded brakes and a titanium exhaust. It drew its inspiration from the Continental GT3 racer, but unlike the competition version, kept the AWD drivetrain in place. "A lot of people expected the GT3-R to be a proper rear-wheel-drive sports car," Bentley's chief engineer Rolf Frech said to Autocar, "but the problem was timing. We needed the car at the end of the first season of our GT3 racing car, and to do a proper change of the complete powertrain needed longer than we had. But we have the concept in our mind, so why not?" Denuded of its all-wheel drive, the Conti GT3-RS – assuming Porsche doesn't mind lending the name to its sister company – would be the most hardcore version of the go-to luxury coupe, and would promise to cut its already blitzkreig 3.6-second 0-60 time down even further. Especially if the 4.0-liter twin-turbo V8 were tuned to deliver even more than the 572 horsepower and 516 pound-feet of torque it already kicks out in the existing GT3-R. Chances are it'd be even less accessible, though: the 99 examples of the Conti GT3-R that are coming to the States out of the 300 total to be made already carry a $337k sticker price, and the rear-drive model would likely push the production:price see-saw even higher to the right.

Bentley Bentayga will be the world's fastest SUV

Bentley is getting close to unveiling the Bentayga crossover. And this latest preview clip packs a punch. The Bentayga is depicted in the video above and the images below undergoing high-speed testing on an oval test track (albeit still under camouflage). And with it comes some interesting figures. First, Bentley confirms the Bentayga will adopt a new 6.0-liter W12 TSI engine. Revealed this past May in Vienna, the engine still features the same unique layout and twin-turbo setup, but features a new injection system and other advancements to deliver 600 horsepower and 664 pound-feet of torque. That will make the Bentayga, in Bentley's own words, "the fastest, most powerful SUV in the world." To back up the claim, it's showing the ultra-luxe sport-ute reaching a top speed of 301 kilometers per hour. That's 187 miles per hour to us, or a good 11 mph faster than the Porsche Cayenne Turbo S and 25 mph clear of the Range Rover Sport SVR. In other words, as far as top speed in SUVs is concerned, the Bentayga will be the new king of the hill... for now, at least. BENTAYGA: EXPLORING THE LIMITS OF PERFORMANCE Bentayga reaches 301 km/h, making it the fastest SUV in the world (Crewe, 04 September 2015) The all-new W12 TSI engine is the most technically advanced 12-cylinder in the world, delivering the best combination of power, torque and efficiency of any car in its class. With a top speed of 301km/h, the Bentayga will be the fastest, most powerful SUV in the world. This film provides a glimpse of what is to come: a unique combination of performance and luxury. Performance of this nature is rare in any car. It was unheard of in an SUV – until now.