Paired to an eight-speed automatic transmission, the four-cylinder engine returns 23 mpg in the city and 25 mpg on the highway, netting a 24-mpg combined rating. The turbocharged mill, however, requires premium gasoline, so the EPA estimates its annual fuel cost at $2,100. Opting for the Unlimited model decreases fuel economy to 22 mpg in the city and 24 mpg on the highway, resulting in a 23-mpg combined rating. Estimated annual fuel cost for the 2.0-liter Unlimited model is $2,300.
That’s compared to the standard 3.6-liter V6 engine, which returns 18 mpg in the city and 23 mpg on the highway (20 mpg combined) when paired to the eight-speed automatic transmission. Although it requires regular gasoline, EPA estimates annual fuel cost for the V6 to be $2,150. Fuel economy is the same on the Unlimited model with the automatic transmission.
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There is also a manual six-speed transmission available on the V6 engine, rated at 17 mpg in the city and 25 mpg on the highway for a 20-mpg combined rating. But unlike the automatic model, the Unlimited equipped with the manual transmission gets slightly worse highway fuel economy at 23 mpg. That results in a 19-mpg combined rating for the Jeep Wrangler Unlimited 3.6-liter V6 with a manual six-speed transmission.
The 2.0-liter turbocharged four-cylinder engine costs $1,000 additional, but can only be paired to the automatic transmission, which is $2,000. So compared to the manual-equipped V6 Wrangler, it costs $3,000 more. The turbo-four engine offers 270 horsepower and 295 pound-feet of torque, while the Pentastar V6 provides 285 hp and 260 lb-ft of torque.