Lexus Gs 350 F Sport Horsepower. Black line 4dr sedan awd (3.5l 6cyl 311 hp 6a) steering wheel; New cars » new cars; 2015 Lexus GS 350 F Sport review notes from www.autoweek.com This is no surprise because the existing lexus gs was launched in 2011. 3 owner, 9 days in market. Lexus gs 350 f sport hp. 2015 Lexus GS 350 F Sport review notes 2015 lexus gs 350 f sport specs. 4dr sedan (3.5l 6cyl 8a) no dealer price. 2015 lexus gs 350 f sport specs. The same car had been launched in 1991 as the toyota aristo in japan.