2009 Porsche Cayenne Base Sport Utility 4-door 3.6l on 2040-cars

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Fastest and most powerful SUVs in America for 2022

Here in the United States, we enjoy power almost as much as we like our SUVs. Thankfully, we’ve got plenty of both. Traditionally, the most powerful SUVs source their massive horsepower and torque from some form of a V8. While thatÂ’s still generally the case, electrification comes into play more and more, whether itÂ’s mild-hybrid tech, a plug-in hybrid powertrain or, as is the case with the two vehicles topping this list, fully electric vehicles. As we enter the 2022 model year, letÂ’s look at the most powerful SUVs available.  Before we dive in, letÂ’s address the elephant that is waiting just outside the door. Due to supply shortages, Mercedes-Benz is shelving most V8 models for the 2022 model year. Some 2021 models can still be found in dealer inventories, but we wonÂ’t include them. With that in mind, letÂ’s dive into the list. 2022 Audi RS Q8 — 591 hp / 190 mph Read our review of the Audi RS Q8 The only Audi on this list is a hot little number, which we characterized as “an uncompromising option in a field of compromised options.” Powered by a 4.0-liter twin-turbo V8 (which seems to be a popular format in this list), its 591 hp and 590 lb-ft of torque get it scootinÂ’ to 60 mph in just 3.7 seconds, and on to a top speed of 190 mph. It even has the bragging rights of holding the Nurburgring lap record for an SUV.   2022 Rolls-Royce Cullinan Black Badge — 592 hp / 155 mph (limited) Read our review of the Rolls-Royce Cullinan This is one SUV where being a passenger might be more exciting than sitting in the driverÂ’s seat, thanks to over-the-top luxury — what do you expect from a car that costs over $350,000? The driver doesnÂ’t go unrewarded, though, with a turbocharged 6.75-liter V12 at their disposal. Thanks to the Black BadgeÂ’s software upgrade, it makes 592 hp and 664 lb-ft of torque to help get to its electronically limited top speed of 155 mph that much quicker.    2022 BMW Alpina XB7 — 612 hp / 180 mph Read our review of the BMW Alpina XB7 Alpina takes already impressive BMW vehicles and turns them into even more powerful, more luxurious machines. The Alpina XB7 improves upon the BMW X7 with a biturbocharged 4.4-liter V8 offering up 612 hp and 590 lb-ft of torque. ThatÂ’s good for a 4.0-second 0-60 sprint and a 180-mph top speed. Alpina also adds its own transmission and drivetrain tuning, upgraded suspension, exhaust and a whole slew of unique appearance touches.

Magnus Walker and Alex Ross stop by Leno's garage with their 997 GT2

The market is littered with Porsche 911 tuners, with names like 9ff, Gemballa and TechArt leading the field. Seldom do any two ever collaborate on a joint project, but that's just the kind of match that was made at Jay Leno's Garage. That's where Alex Ross of SharkWerks and restomodder Magnus Walker first met, sparking a collaboration that yielded the car you see here. And fittingly, they've brought it back to the garage to show off what resulted. Though Walker usually deals with older Elfens, this time he applied his eye for style on a more contemporary 2008 997 GT2, decking it out with grey stripes, orange bumpers, gold wheels and decals and a tartan-upholstered interior. He left the mechanical bits to Ross and company, who dropped the suspension and increased output to 650 horsepower at the wheels (775 at the crank), surpassing the stock GT2 and even the later GT2 RS. The result is pretty hard-core and old-school, but you'll want to watch the video above to see for yourself.

The 2014 Ruf RCT offers rear-drive action with 911 Turbo fun

Ruf has 37 years of experience of turning Porsches into even higher performance machines. For the 2014 Geneva Motor Show, it's unveiling the RCT, or Ruf Carrera Turbo, which offers power to split the difference between Porsche's 911 Turbo and Turbo S models.
The RCT starts with a unique body kit with a new front air dam and drastically changed rear deck that combines both a small spoiler and air intake. Power is provided by a twin-turbocharged, 3.8-liter flat-six with 525 horsepower and 502 pound-feet of torque paired to either a seven-speed manual or seven-speed dual clutch transmission. That gives the Ruf a 5-hp and 15-lb-ft advantage over Porsche's own Turbo but is still less powerful than the full Turbo S. The RCT sprints to 62 miles per hour in 3.5 seconds and to a top speed of 196 mph.
However, the Ruf's big advantage is that it offers buyers the choice of either rear-wheel drive or all-wheel drive, while Stuttgart's turbo models are only available spinning all four wheels. The RCT can also offers upgrades like an integrated roll cage and custom suspension packages, should the buyer be so inclined to splash out on racing kit.