Design | Comfort | Tech | Performance | Safety | Fuel Economy | Pricing | FAQ Verdict 8.6 / 10 I don’t mean to speak ill of the dying, but the Jeep Grand Wagoneer’s 6.4-liter V8 was probably not the best choice for a flagship SUV. Perfectly at home in muscle cars and pickup trucks, the 471-horsepower Hemi wasn’t quite energetic or refined enough for a 6,000-plus-pound luxury SUV. The 2023 Grand Wagoneer’s new twin-turbocharged 3.0-liter straight-six, though, feels tailor-made for premium duty. In high-output guise (exclusive to the Grand member of the Wagoneer family), it packs 510 hp and 500 pound-feet of torque with a smooth, quiet charm. This…