The 2018 Jeep Wrangler JL can certainly be described as “all-new,” but the 3.6-liter Pentastar V-6 is largely carry-over from the outgoing Wrangler JK. Still, it’s got a new fuel-saving feature: Auto Start/Stop. The system automatically turns the engine off when stopped at traffic lights or other similar driving scenarios. Like other start/stop systems, the engine restarts automatically when the brake pedal is released, giving the engine time to rev back to idle before the driver has time to press the throttle. The result is less overall fuel consumption.
