The Volvo B12BLE is a low-entry city and suburban bus chassis launched in 2001 with an engine mounted on the rear overhang. It replaced the Volvo B10BLE and is used as a base for single deck buses in Europe and Australia. It is a similar to the B7RLE in design, with the overall chassis being the same, however the B12BLE features the 12-litre Volvo DH12 engine and is equipped with 4-wheel disc brakes because of the extra weight. The engine is mounted horizontally, as opposed to vertically, for example, with the Volvo D7 engine in the B7L. The radiator is mounted low on the right hand side.