The Lexus GX is powered a 4.6-liter V8 engine that pours out 301 horsepower and 319 lb-ft of peak torque through a 6-speed automatic transmission with full-time four-wheel drive. Fuel economy is rated at 15 mpg city and 19 mpg highway, for a combined average of 16 mpg. The powertrain gives the GX a towing capacity of 6,500 pounds. Hopping inside, the Lexus SUV’s black interior is roomy and beautiful. The NuLuxe-trimmed 10-way power adjustable front seats are accompanied by sliding/reclining second-row 40/20/40 seats. The third row seat folds down flat for excellent cargo space. I must confess I had some challenges with the Lexus Memory System. It was difficult to remove the seat and mirror settings left by the previous driver to save my own settings. Dual-zone automatic climate control with interior air filter provides excellent air quality at the perfect cabin temperature. Although the passengers can just simply …