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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).

What does Jeep have cooking with this stretched Cherokee?

Chrysler has been spotted testing what appears to be a stretched Jeep Cherokee prototype. Which seems odd, considering that Jeep already makes a Grand Cherokee, and that's an entirely different model. The question then is just what the company has in the works here. We don't know for sure – but we do have some ideas. We're anticipating a new Grand Wagoneer to serve as the brand's flagship model, but stretching the Cherokee's wheelbase to leapfrog the Grand Cherokee's would take more than eight inches – and stretching a "compact" platform to get there wouldn't seem to make a lot of sense. Alternatively Jeep could be looking to wedge a new model into its lineup in between the Cherokee and Grand Cherokee, potentially offering a third row of seats and wearing the Wagoneer name - sans the "Grand" - as part of a new range of seven-seaters. Just what the point would be, however, when the Dodge Durango already offers three rows based on the same platform as the Grand Cherokee, is a bit of a mystery. Another possibility is that it's not a Jeep at all, but rather a Dodge. The brand is in need of a replacement for the current Journey, and we're also waiting to see what FCA does to replace the Grand Cherokee since it unveiled the Chrysler Pacifica to replace the Town and Country. More of a crossover approach could take the Cherokee's Compact US Wide (CUSW) platform as its starting point, but stretched like this prototype to offer more space. Whatever it is, we're sure this won't be the last we'll have seen of it, so watch this space. Related Video:

Mopar Dodge Challenger special edition celebrates a mod decade

Despite the current Dodge Challenger hitting the age of 11 this year, it continues to be a top seller for the brand. One of the reasons for its popularity is its customizability. FCA acknowledges this with the just-revealed, limited-edition Mopar 2019 Dodge Challenger celebrating its factory-backed performance parts and accessories straight from the its own in-house parts division. For 10 years, Challenger owners have benefited from upgrades directly from Chrysler’s Mopar division. This has been a big deal because tuning a car often required aftermarket parts, which could jeopardize factory warranties. But with upgrades directly from original equipment manufacturers, such a risk was eliminated. “Over the last decade, weÂ’ve customized an impressive group of vehicles with exclusive Mopar performance parts and accessories that our enthusiast customers crave,” said Mark Bosanac, head of Mopar Service in a statement. “This year weÂ’re commemorating our tenth Mopar build with another unique and collectible Dodge Challenger, which continues to be the modern muscle car every bit as beloved today as the first-generation vehicle was 50 years ago.” The 2019 Mopar Dodge Challenger starts life as R/T Scat Pack model. Under the hood sits a 392-cubic inch (6.4-liter) Hemi V-8 with 485 horsepower and 475 pound-feet of torque with the choice of a six-speed manual or an eight-speed automatic. But Mopar sweetens the deal by adding a performance cold-air intake, strut tower braces to improve structural rigidity and handling, as well as strut caps and braces painted in silver for eye candy whenever the hood is popped. ItÂ’s only available in two hues, Pitch Black or White Knuckle, and comes with a variety of bespoke interior and exterior upgrades. They include special Mopar Shakedown graphics and blue striping from the front fascia all the way back to the rear decklid spoiler. Completing the look is a set of 20x9-inch forged aluminum wheels wrapped in Goodyear P245/45ZR20 performance tires and the optional shaker hood package made standard. Sales commence next month with a starting price of $45,835.