2017 Tesla Model X on 2040-cars

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Figuring out exactly how much it costs to charge Tesla Model S

Is the Tesla Model S an electricity guzzler? One driver trying to answer that question says it does gobble down more juice than previously thought, but it's not time to make Hummer jokes just yet. First, the goal: Tesla's claims that properly set up home-charging stations can get about a 91-percent efficiency rate. Rob M. from Teslarati has been diligently tracking electricity used by his home charging station – made up of a NEMA 14-50 outlet that was professionally installed and Tesla's Universal Mobile Connector (UMC) – since June, as we reported here. The results for the month that ended July 21 revealed that the Model S was taking in about 82 percent of the electricity it was pulling from the system, indicating an 18-percent loss of electricity. Most EVs are thought to charge at an 88 to 90-percent efficiency rate. The downside to his results? About $26 more per month in electricity costs than previously estimated on about 2,400 miles worth of driving. There is a positive upshot, though: his monthly fuel savings totaled about $334 compared to driving an internal combustion engine vehicle. These early results are intriguing, and make us wonder... Is anyone else checking in on their Model S charging efficiency?

Tesla Model S gets minor interior comfort upgrades

The saying goes that moss doesn't grow on a rolling stone, and if that's the case, then the Tesla Model S must be one of the cleanest rocks around. Tesla continually releases little improvements for its luxury sedan, like just a few days ago with the announcement of an over-the-air update to make the P85D (pictured above) even quicker. This time the electric car company has more tweaks coming to make the ride a bit more luxurious. According to an email from Tesla, the automaker is now offering plusher, executive rear seats for the Model S for a dose of extra comfort. The softer chairs also give taller occupants in the back a little more headroom by sitting passengers between 0.4 inches and 0.6 inches lower. To keep warm, the option comes with two-zone heating, and for additional storage there's a center console with a leather-covered armrest and cup holders. In small adjustment for cold-climate drivers, Tesla is adding a heated steering wheel to its Subzero Weather Package on the Model S. The optional bundle already includes useful goodies for the winter like heated rear seats, wiper blade defrosters and heated washer nozzles.

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).