Class boundaries abolished. It was the fifth Golf whose comfort and dynamics left many competitors in the upper mid-range behind. The same was true for quality. One value that underpins the stability of the laser-welded body was the 35 percent increase in torsional stiffness reported in 2003 when the Golf V debuted. For the first time, the Golf was also available with optional side airbags in the rear – together with the six standard airbags (front, front side, head airbags), eight of the protective air cushions were on board. In addition, the Golf V scored points with its new four-link rear suspension, a new 7-speed DSG, bi-xenon headlights, the debut of the first turbocharged direct-injection petrol engine in the Golf GTI and the world's first twincharger with turbocharging and supercharging. When the Golf VI was introduced in 2008, 3.4 million units of Generation V had been produced in all versions.