FCA rescinds 368-hp rating on 2018 Jeep Wrangler's 4-cylinder by deeperkins | Oct 11, 2017 | Uncategorized FCA has rescinded the information it filed with NHTSA concerning the power output of the 2.0-liter turbocharged I-4 engine it plans to put in some versions of the upcoming 2018 Jeep Wrangler. Source: Auto Feed