Lamborghini Premium 1100 and 1300 were named the R5 series in autumn 2003. At the same time, Same Silver models received water-cooled engines, so the differences between the brands were mainly limited to design and color. Unusually, the Hürlimann XT design resembled Same rather than Lamborghini, but in 2006 the color of the Hürlimann models changed to silver and the XT design also became more like Lamborghini’s. Until spring 2005, the cabin was old and angular both from the outside and inside. The newer model is easiest to recognize by its rounded roof section.

The engines were Tier II compliant and electronically controlled 6.0-liter units. The smaller model's power increased to 115 horsepower, and the larger one dropped to 130. There were many equipment options. Most commonly, creep gears were standard, resulting in speeds of 24+24 without a quick shift and 72+72 with a 3-speed quick shift. The direction reverser was either mechanical or hydraulic. The lift device was either mechanical or electric. A speed radar was standard on Lamborghinis sold in Germany. The power take-off (PTO) always had four speeds. The turning radius was slightly smaller than before. The cabin noise level dropped by one decibel to 75.

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