The book covers: the evolution of the 3-series from the BMW 2002, the first 3-series, the E36 and the E46; the design and evolution of the M3, Compact, Z3 and Z4; details of 3-series tuning and modifications, including the options available from specialist tuners such as Alpina, Hartge, AC Schnitzer and Racing Dynamics, and advice on DIY modifications; the 3-series in motorsport, including the BTCC and DTM cars; buying a 3-series, inspection advice, ownership, maintenance and modifications; and specifications for all models, specialists and clubs.