2005 Jeep Grand Cherokee Laredo on 2040-cars

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Watch this 650-hp Hennessey Jeep Grand Cherokee go from 0-60 in 3.9 seconds

Hennessey Performance Engineering has created an HPE650 package for the Jeep Grand Cherokee SRT fitted with the 6.4-liter Hemi engine. When it leaves the showroom floor it has 470 horsepower and gets from 0-60 miles per hour in 4.8 seconds. When it leaves Hennessey's garage floor after the upgrade it has 650 horsepower - 530 hp at the wheels, according to Hennessey - and gets to 60 mph in 3.9 seconds on its way to running the quarter-mile in 12.6 seconds.
There's more than just a Roots-type supercharger bolt-on, with ported cylinder heads and high-flow headers among the many changes made to the engine. You can watch this pre-2014 facelift silver model prove its spec sheet on the drag strip in the video below.

2020 Land Rover Defender vs. 2020 Jeep Wrangler: How they compare on paper

For ages, the Jeep Wrangler has had the serious off-road SUV market in America all to itself, especially when it comes to two-door variants. But competition is coming, and the first on its way is the 2020 Land Rover Defender, which was just revealed at the Frankfurt Motor Show. Each packages retro looks and impressive off-road capability, but does one have an advantage? We decided to take a look into each SUV's specifications and compare them on their engines, drivetrains, interior space and towing among other things, to see how they stack up. Since both SUVs are offered in two-door and four-door versions, we've made sure to feature both versions. You can find all the vital stats in the chart below, followed by more in-depth analysis. Engines and drivetrains The Land Rover is the clear high-performance option of these two SUVs. Its base turbocharged 2.0-liter four-cylinder, offered only in the four-door Defender 110, is more powerful than either of the gas engines offered on the Jeep Wrangler. The Wrangler's four-cylinder matches it on torque, at least. The optional turbocharged 3.0-liter inline-six in the Defender makes over 100 more horsepower and pound-feet of torque than either Jeep gas engine. But if you're looking for diesel propulsion, along with its associated torque and fuel economy, the Wrangler will be your only option. Final specs haven't been released, but in the Ram 1500, the same engine makes 260 horsepower and 480 pound-feet of torque. Fuel economy hasn't been announced for the Land Rover or the diesel Wrangler. But if fuel economy is a concern, the four-cylinder Wrangler is the most frugal of the SUVs we have numbers on. As for transmissions, the Wrangler is your only choice if you have to have a manual. It's available on both the two-door and four-door models, but only with the V6 engine. If you don't mind an automatic transmission, both SUVs come with variations on the ZF eight-speed auto. Getting the power to the wheels is another area where these two SUVs diverge. The Jeep is very traditional with a standard selectable four-wheel-drive system with two-wheel drive, and low- and high-range four-wheel drive modes. On the Sahara, there's an available full-time four-wheel drive mode, but the other modes are still available. On the Land Rover, you get full-time four-wheel drive, the same kind used on the Land Rover Range Rover.

Jeep first American carmaker to return to Tokyo show

Despite foreign-brand car sales in Japan declining six percent in the first four months of this year, Jeep sales are up 21 percent in the same period. That could explain why Jeep will be the first the US manufacturer to return to the Tokyo Motor Show after eight years away. Ford, General Motors, and Chrysler walked away during the global crisis that struck after the 2007 show. Jeep will be part of an eight-vehicle, four-brand showcase overseen by Fiat Chrysler Automobiles Japan, the local subsidiary. For the moment, it is the only US brand to sign up - neither Ford, GM, or even Chrysler are committed to attend. Stablemates Fiat, Alfa Romeo, and Abarth will be there, along with 13 other foreign makes, answering the "Technology & Fantasy" theme for this year's event. In total, organizers announced 15 brands from 14 Japanese manufacturers, and 27 brands from 17 foreign carmakers. The show opens to the public from Oct. 30 to Nov. 8. Related Video: