The Wrangler 4xe has quickly become FCA US’ most popular plug-in hybrid. It has two advantages for buyers—it can save money compared with the base V6 gasoline engine, despite having about the same rated mileage, because it can be driven for a while on pure battery; and its has V8 acceleration which comes close to the all-out (and pricier) 392 V8.
The EPA’s ratings are 20 mpg with the base V6 and 21 mpg with the hybrid setup, but this excludes the all-electric portion. (The Jeep Wrangler has never been known as one of the best cars for gas mileage.)
EPA testing found 22 miles of electric power; they rated it at 49 MPGe. As a pure hybrid, though, the combined figure was 20 mpg. The diesel remains the most fuel efficient engine, with a combined 25 mpg (and $2350/year estimated fuel costs), but its acceleration is a far cry from the quick 4xe, and diesel fuel is pricey….