2011 Jeep Wrangler Mojave

Chrysler has managed to squeeze a little extra fuel economy from the 2012 Jeep Wrangler. According to the Environmental Protection Agency, the model now gets up to 17 mpg city and 21 mpg highway, good for 18 mpg combined when saddled with a five-speed automatic or a six-speed manual transmission. That's a thirteen-percent improvement over the 2011 model's 15 mpg city and an 11 percent boost over the old bruiser's 19 mpg highway. Not surprisingly, the increases come from the fact that the Wrangler now boasts the Pentastar 3.6-liter V6 engine.

The better fuel economy doesn't come at the cost of horsepower, either. In fact, the new V6 rocks 285 horsepower and 260 pound-feet of torque. The old 3.8-liter V6 was only good for a comparatively asthmatic 202 horsepower and 237 lb-ft of twist.

The four-door Wrangler Unlimited shown above has also benefited from the Pentastar engine – its fuel economy has increased to 16 mpg city and 21 mpg highway when equipped with a six-speed manual transmission.