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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).

Jay Leno's 1930 Bentley GJ 400 is a 27-liter monster

Jay Leno's Garage never fails to impress - and by that we mean both the YouTube channel and the actual place. The latest online bit features another truly insane vehicle. Leno's 1930 Bentley GJ 400 isn't actually a classic car and has few Bentley parts on it. It's really a modern custom with vintage looks and a 27-liter Rolls-Royce Merlin V12 engine for power. This machine is absolutely immense, and weighs over three tons.
The Merlin engine was one the workhorses of World War II-era planes. In the GJ 400, Leno believes the V12 is making around 650-700 horsepower. Although, he admits that it could probably be pushed to over 1,000 if someone wanted to. However, he clearly loves this behemoth just the way it is.
While the design is classic, the mechanicals are relatively modern. The engine is fuel injected, and power routes through an automatic transmission to the rear wheels. Many of the updated pieces are hidden as well. For example, what looks like a blower at the front actually disguises an oil cooler.

2017 Bentley Mulsanne Speed is more ostentatious than ever

As it was, the Bentley Mulsanne was a pretty bold and ostentatious (and totally awesome) show of luxury. It was big and brutal in a classically British way, but it was also outperformed and out-teched by more modern (and cheaper) luxury sedans from Mercedes-Benz, BMW, and even Audi. Buying one was a classic case study in vehicular statement-making, a vote for old-school refinement instead of modern gee-whizzery. Bentley clearly recognized that fact, because it's doubled-down on the big Mulsanne's aristocratic, give-no-craps demeanor as part of its latest aesthetic update. We love it. For one, the car on display in Geneva is painted is painted in an eye-catching (and questionable) metallic yellow-green. It is not subtle, but weirdly, it kind of works. The new, even more imposing grille is similarly blunt. It's been stretched three inches and is now home to polished stainless steel vanes. As we explained in our original post on the Mulsanne, the new headlight arrangement seeks to eliminate the "droopiness" of the current car. The LED units largely succeed, while somehow giving the front end an even snootier look. Styling changes elsewhere are subtler, which is to say there's still no mistaking the Mulsanne for anything else. The tail gets tasteful new LED lights, while changes along the long, smooth profile look to be nonexistent. It's a similar story in the cabin, which is a place filled with leather, chrome, and wood. It's proper and restrained, in contrast to the look-at-me face. But don't let the handsome and clean interior fool you – the only thing less subtle than the Mulsanne's new front fascia is the performance of this Speed variant. The 6.75-liter, twin-turbocharged V8 continues to reside under hood, turning out 530 horsepower and 811 pound-feet of torque. That's good for a 4.8-second 0-60 time and a 190-mile-per-hour top speed. Those are impressive figures for a genuine sports car, but they're just hilarious in a vehicle the size of a New York City apartment and the weight of a piece of construction equipment. The Mulsanne is an unnecessary, silly vehicle – a Mercedes-AMG S65 is a much better value. But simply put, few cars make such a bold statement about your wealth and power.