Garage Kept Collector 1996 Porsche Twin Turbo Last Of Air Cooled Cars on 2040-cars

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40+ cars that barely avoid the gas guzzler tax

The Gas Guzzler schedule, with mpg ratings and charges that haven't changed since 1991, lays out which fuel-swillers owe what to Uncle Sam.
I started thinking about the "Gas Guzzler Tax" - considerably less well known as The Energy Tax Act of 1978 - when I was driving Dodge's new Challenger SRT Hellcat last week. Unsurprisingly for a car that can burn 1.5 gallons of gas per minute at max tilt, theoretically able to empty a full tank of premium in about 13 minutes, the Hellcat will be subject to the Gas Guzzler Tax schedule when it goes on sale.

2015 Porsche Cayenne S

Oh, Porsche.
Just as the dust settles over the 911 GT3's no manual gearbox kerfuffle, the Germans have gone and yanked the yummy naturally aspirated 4.8-liter V8 from the Cayenne S and replaced it with a twin-turbo 3.6-liter V6. Is nothing sacred in Porscheland?
Perhaps not... but that's not necessarily a bad thing. After all, Porsche famously once said they'd never build a diesel, but when they did, it was actually rather stellar.

Porsche planning Cayman GT4, 700-hp Turbo S e-Hybrids

The old wisdom when it came to the Porsche lineup was that the Boxster and Cayman needed to be kept in line so as not to encroach on even the lower end of the 911 range. But with the latest versions of the compact roadster and coupe, that logic has gone out the window. Especially with the introduction of the latest GTS models (pictured above). But that's not the end of the story. According to Motor Trend, Porsche is working on an even more powerful version of the Cayman that could carry the GT4 badge, positioning itself along the same lines as the 911 GT3 and GT2 – only, you know, smaller. Although our sources at Porsche would, predictably, neither confirm nor deny the report, MT has it that power could come from either a turbo-four or a more powerful flat-six, mated to the beefed-up DCT from the latest 911 GT3. A similar version of the Boxster could bring back the RS Spyder designation. That's not all Porsche is said to have in store, though. Based on the engineering that went into the 918 Spyder, Porsche could roll out a new range-topping model for the 911, Panamera and maybe even the Cayenne, packing a version of the 918's PHEV powertrain. Slotting in above the existing Turbo S variants of each model line, the new flagship models could pack 700 horsepower or more and be designated e-Hybrid in similar fashion as the 918.