Grand Cherokee SRT

On April 20, 2011, Jeep announced that the SRT8 version would be debuted at the 2011 New York Auto Show. According to Chrysler, it is the most powerful Jeep ever built. 0–60 and quarter-mile times have not been measured yet, but are expected to be on par with the previous generation SRT8.

The new Cherokee SRT8, which started production on July 16, 2011, is equipped with a 470 hp (350 kW; 480 PS) 6.4 L Hemi V8 engine. Jeep claims the new SRT8 gets 13 percent better fuel economy than its predecessor. To keep the gas mileage respectable, Jeep has employed a new active exhaust system that lets Chrysler's cylinder-deactivating Fuel Saver Technology operate over a wider rpm band. Chrysler claims that with the larger gas tank, the SUV can now travel up to 500 miles (800 km) on a single tank, while other sources estimate range to be 450 miles (720 km).

2014 Grand Cherokee SRT

Including the relatively minor cosmetic tweaks, changes to the Grand Cherokee SRT are minimal. Among them: The SRT8 moniker has been binned. The Chrysler Group has opted to dump the cylinder-specific nomenclature, meaning all future models coming out of the company’s high-performance shop will be badged simply as SRT.

Competitors: Ford Explorer, Volkswagen Touareg, Porsche Cayenne, Mercedes-Benz ML, BMW X5M/X6M, Land Rover LR4, Lexus RX, Infiniti FX 

Powertrains: 3.0-liter diesel V-6, 240 hp, 420 lb-ft; 3.6-liter V-6, 290 hp, 260 lb-ft; 5.7-liter V-8, 360 hp, 390 lb-ft; 6.4-liter V-8, 470 hp, 465 lb-ft; eight-speed automatic, RWD or AWD 

EPA Fuel Economy (city/hwy): 21–22/28–30 (diesel), 17/24–25 (V-6), 14/20–22 (5.7 V-8), 13/19 (6.4 V-8)