Depending on the equipment installed, the SL weighs between 125 and 140 kilograms less than its predecessor. The bodyshell is manufactured almost exclusively from aluminium. Systematic lightweight construction and intelligent detail solutions provide additional weight savings. In addition to a lighter rear axle, the design also features tube-in-tube concepts and thin-walled hollow profiles, for example.
The longitudinal members are also hollow-cast. This does not impair stability. To the contrary. In sum these measures add up to a lightweight and torsionally rigid bodyshell with an optimal ratio of rigidity to weight. Compared with its already torsion-resistant predecessor, torsional rigidity was increased by some 20 per cent. Ultimately the widespread use of aluminium not only makes the SL lighter, but also sportier, more economical and safer.