1964 Jaguar Series I, 3.8 Liter, E-type Roadster on 2040-cars

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Jaguar F-Pace V6 reminds us why we love supercharged engines

There are many things we like about our 2018 Jaguar F-Pace long-term car, as well as some things we don't care for, but easily one of the best things about it is the engine. Under the hood is the 380-horsepower supercharged V6 that Jaguar offers on other models. That amount of power would be fun in just about any car with any engine, but there are specific reasons why this particular engine is special, and it's because of that supercharger. Supercharged engines have a very different character than increasingly common turbo engines. One of the most noticeable differences being engine response. Unlike turbo engines, the F-Pace's V6 feels hardwired to your foot. Every extra millimeter of pedal travel yields a slightly greater amount of tug. And the tug is felt immediately. Even the best turbo engines have a hard time recreating this response. The power band is very linear, as well, so you know exactly what you're getting every time you hit the gas. The engine is wonderfully torquey, too. Because the Jaguar's engine uses a classic Roots-type blower, there's a major improvement in low-end torque. This means that our F-Pace has loads of grunt for punting around at low-rpm and can seriously move when tromping on the gas. And because of the near-instant throttle response and linear power band, it doesn't slam you in the back unexpectedly like some turbo engines do. Despite how great these supercharged engines are to experience, we're concerned that supercharged engines like this may disappear in all but ultra-limited production, high-performance cars such as the Chevy Corvette Z06 and Cadillac CTS-V. The reason being that car companies have to keep making cars more fuel efficient and lower emitting. Putting a supercharger on an engine is adding a handicap, since it takes engine power to spin the belt-driven supercharger. And when a turbo, which uses wasted energy from exhaust gas to spin the compressor and built boost, can effectively do the same thing, it's hard to make a case for a supercharger. We won't give up hope completely, though. Mazda is using superchargers on its spark-assisted compression ignition gasoline engines. And while we're not sure how powerful and sporty those will be, Mazda has said that it's going with superchargers for exactly the reasons we like the Jaguar engine: smooth power and fast throttle response.

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).

Audi E-Tron vs. Jaguar I-Pace and Tesla Model X: How they compare on paper

The all-electric crossover segment is suddenly heating up. Tesla was first to market with its Model X, and the California-based automaker has a several-year head start on the rest of the field. But now it has competition, with the Jaguar I-Pace already hitting dealerships across the globe and the just-announced Audi E-Tron hot on their heels. We decided to see how Audi's new entrant compares with its British and American rivals, so we downloaded their spec sheets (at least those that are available) and dumped them all into the spreadsheet you see below. As you'll soon find out, there are lots of similarities between these three electric crossovers, but each has a unique selling point or two with which to entice buyers. View 24 Photos Performance Note that we're using the Tesla Model X 75D for this comparison, since that's the model that is closest in price to the Jaguar and Audi entries. If you really want the fastest and most powerful electric CUV available, you're going to want to look at Tesla's ludicrous P100D model, but you'd better be willing to just about double the price you see in the chart above. With that out of the way, these particular electric crossovers are all pretty quick. The Jaguar boasts the quickest 0-60 time, but in the real world, that half-second advantage over the 75D won't amount to much. The Audi is a full second behind the Jaguar, and a little over a half second slower to 60 than the Tesla. A 5.5-second 0-60 time, though, still means the E-Tron will be able to squirt away from traffic lights quicker than the rest of the morning commuters. As far as battery capacity, Audi leads the way with 95 kWh, which is 5 more than the Jag and a whopping 20 more than the Tesla. Until we get estimated range figures, though, we won't know what the extra capacity means in the real world. In other words, stay tuned. View 74 Photos Exterior and interior dimensions The Jaguar is the smallest of these three 'utes, inside and out. The Tesla Model X is the largest. Does that make the Audi just right? Maybe, but only if you don't need a third row — the Model X is the only one of this trio that offers seating for six or seven passengers (depending on whether the buyer opts for a second-row bench or individual chairs). A smaller size may be a boon for drivers who often have to fit into tight spaces, but those slinky dimensions mean the Jaguar's cargo capacity is well behind that of the Audi and not even close to the cavernous Tesla. Tesla Motors Inc.