What further possibilities of optimisation are conceivable ?
At least a further 80 kg of weight could be saved by a more comprehensive redesign of the body with fibre composite materials and replacing the glass windows by polycarbonate. This further potential was not made use of in view of the short-term implementation of the SmILE concept. A smaller tank would also contribute to a further reduction in weight. Considerable additional potentials for reducing consumption are to be found in a more far-reaching concept which would redesign the entire vehicle structure: even smaller dimensioned engine; further weight savings; improving the aerodynamics (for instance, a cw value 15 % better could be achieved by a rear interior of the Twingo a few percent smaller); automatic inertia utilisation or engine switch-off systems; braking energy recovery (recuperation) etc.