To maintain a near-ideal weight distribution, a rear transaxle is used, in addition to the mounting of the fuel tank ahead of the rear axle and the radiators at the rear. The windshield washer fluid reservoir is mounted in the center next to the fuel tank to improve further the center of weight. Overall 48% of the LFA's mass is distributed along with the front wheels with 52% at the rear. The fuel tank straddles the exhaust system keeping weight centered along the left-right axis. The engine is connected to the transaxle via a rigid carbon-fibre torque tube which the exhaust system runs directly below. This stacked driveshaft and exhaust arrangement decreases the width of the centre tunnel allowing for centrally located seating.