The chassis of the MINI ALL4 Racing provides the perfect basis for the modifications required for use in rallying. The MINI ALL4 Racing is about five percent larger than the series version. Carbon fibre is the dominant element in the bodywork. The uniform 50-millimetre steel pipes used in the roll cage are in line with the standards applied by the aircraft construction industry (as are all the steel parts). The roll cage is partly adhered to the bodywork. The enclosed passenger cell is the only component of the car that cannot be taken apart, while all the remaining parts on the MINI ALL4 Racing can be dismantled separately into other individual parts.