2004 Porsche Boxster S 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.

Porsche 911 RSR stops just long enough to have its photo taken

When it comes to Porsche and its rapidly escalating endurance racing program, all eyes may be on the new 919 Hybrid - and with good reason: that's the vehicle with which Porsche will be challenging the likes of Audi and Toyota for wins in the top-tier LMP1 class of the FIA World Endurance Championship and at Le Mans. But it's the 911 RSR that does and will continue to form the backbone of the factory's effort.
The 470-horsepower racing version of the road-going 911 took a one-two finish in its class at Le Mans last year, and also won its class at the Daytona 24 this past January as well. This year Porsche will field two of them in the WEC, another two in the United SportsCar Championship here in the US and will sell countless more to customer racing teams that will undoubtedly continue to rack up trophies in racing series around the world. This, then, might be a unique chance to see one standing still. Check it out in our gallery of live images above from the Geneva Motor Show.

2017 Porsche 911 Turbo First Drive [w/video]

Remember when turbos were a big fat middle finger to the naturally aspirated status quo? The horsepower renaissance has seen the forced induction phenomenon go from badass add-on (Turbo 'Vette!) to battle cry for efficiency (Kia Optima Turbo). From econoboxes to high-end holdovers like Ferrari and Aston Martin, everybody's doing the turbo shuffle. But what does that mean for the gang from Stuttgart – and more importantly, the top-of-the-line 911 that has called itself Turbo since the mid-1970s? I spent a day in the 2017 Porsche 911 Turbo and Turbo S to find out. Now is a particularly fitting time to evaluate the latest iteration of the venerable Porsche 911 Turbo. Our scrutiny comes at a moment when standard-issue Boxsters, Caymans, and Carreras have finally adopted turbocharged platforms. The Turbo S has a top speed of 205 mph, marking the first time the model has crested the 200-mph barrier. Spoiler alert: Rather than radically transforming its long-evolved essence, the 2017 Porsche 911 Turbo has made incremental changes that makes it, well, more Turbo than ever. Horsepower for the Turbo and Turbo S climbs 20 each, to 540 and 580, respectively; 0-60 times drop to a scant 2.9 and 2.8 seconds, and these top dogs now have terminal velocities of 198 and 205 miles per hour, marking the first time the model has crested the 200-mph barrier. The forced-induction flagships have different engine hardware, another first for the lineup, with the S gaining larger turbo impellers and housings. A revised differential enhances the precision of power transfer, while the PDK dual-clutch transmission (the only gearbox available) gains a centrifugal pendulum for smoothness. The dynamic engine mounts now work harder for crisper response, and the variable damping rates have been extended at both ends for a wider range of settings. If you're a fan of hanging the tail out, you'll be pleased to know that a new Sport mode enables greater yaw angles. And if you dig indiscreet bursts of acceleration, there's now a Dynamic Boost function that preps the drivetrain for a little extra oomph by dropping down a gear and holding the throttle open to maintain turbo pressure, increasing torque from 487 to 523 pound-feet, and from 516 to 553 lb-ft in the S. Standard equipment now includes a Sport Chrono Package, camera-equipped parking sensor, and the Porsche Dynamic Light System. Engine flexibility is outstanding, allowing peak torque to start at only 2,250 rpm.