- jeep's wrangler unlimited with the ecodiesel v-6 gets 29 mpg on the highway, 22 mpg in the city, and 25 mpg combined, the epa has reported.
- c/d's own recent highway fuel-economy testing yielded 22 mpg for the wrangler unlimited rubicon with the ecodiesel.
- we've tested eight different current-generation jl wranglers of varying powertrain and body configurations, achieving highway mileage that ranged from 18 mpg to 26 mpg.
now that fca has finally graced the jeephead masses with the 442-lb-ft ecodiesel v-6 engine in the wrangler unlimited, off-roaders can rejoice because, in addition to being the torquiest wrangler to date, the wrangler will also be the most fuel efficient, jeep says. now that the epa has released figures for the diesel-equipped wrangler, that promise would seem to be true—at least on paper, that is.
in addition to being highly efficient, the ecodiesel is surprisingly quick, in our first test of the oil burner, 60 mph came in a brisk 6.7 seconds, which matched the time of the gas v-6. according to the epa, the wrangler unlimited with the ecodiesel will return an impressive 25 mpg combined, 22 mpg in the city, and a whopping 29 mpg on the highway, which makes it the most fuel-efficient wrangler to date. however, we recently tested the 2020 wrangler unlimited rubicon ecodiesel on our 200-mile 75-mph highway fuel-economy loop and found that it only managed to get 22 mpg.
the rubicon's lesser performance is at least partially due to its knobby bfgoodrich all-terrain t/a k02 tires and the higher unsprung mass associated with them. and based on our testing of eight different current-generation jl wranglers of varying powertrain and body configurations, we doubt that the sahara, with its more street-focused bridgestone dueler tires, will be capable of achieving 29 mpg in our hfe test.
so far we’ve seen as low as 18 mpg (about 26 percent worse than its epa rating) from a two-door wrangler rubicon with the turbocharged 2.0-liter, and as high as 26 mpg (nearly 7 percent better than its epa rating) for the etorque turbocharged 2.0-liter wrangler unlimited. comparing our results for two v-6 wrangler unlimiteds—one rubicon and the other a sahara—the difference was only 1 mpg better for the sahara.
another relevant fact is that the four-wheel-drive ram 1500 ecodiesel shares the same 29-mpg rating with its diesel wrangler sibling. we've tested two ram diesels, a rebel that garnered 24 mpg and a limited that got 25. whether or not people will opt for this new powertrain due to promises of greater efficiency, or whether they'll be attracted more by the beefy torque and quick-as-the-gas-v-6 performance, but if we had to bet on it, we'd choose the latter.