The semi-high architecture appeared on the 307 in 2001, enabling the model to stand apart completely from the other saloons in its segment. The 308 could only capitalise on this innovative architectural concept offering space, visibility, luminosity and compactness and providing its occupants with unmatched comfort and quality of on-board living.

With all these benchmark quality features, the 307 has already attracted more than three million buyers throughout the world. The semi-high architecture of the 308 allows a passenger compartment organisation fully dedicated to passenger well-being, with custom-made "furniture".