Regal is designed with your ultimate comfort and safety in mind. Browse the specifications on this page to find out exactly how Regal brings you the casual side of luxury.         Engine Type (LS) 3.8-liter 3800 SFI1 Series II V6 Horsepower 200 @ 5200 rpm Torque (lb-ft) 225 @ 4000 rpm Axle ratio 3.05 Fuel economy (city/hwy) 20/29mpg2   Type (GS) 3.8-liter 3800 SFI1 Series II Supercharged V6 Horsepower 240 @ 5200 rpm Torque (lb-ft) 280 @ 3600 rpm Axle ratio 2.93 Fuel economy (city/hwy) 18/27mpg2   Capacity Trunk (cu. ft.) 16.7 Fuel tank (gal.) 17.5 Base curb weight, lbs. LS 3,439 GS 3,543   Exterior Dimensions (inches) Length 196.2 Width 72.7 Height 56.6 Wheelbase 109.0 Front tread 62.0 Rear tread 61.3   Interior Dimensions (inches) front/rear Legroom 42.4/36.9 Headroom 39.4/37.4 Shoulder room 58.0/57.1 Hip room 54.4/53.3 1 Sequential-port fuel injection. 2 EPA estimated mpg.