In the catalogue, Commodore is best understood as a vehicle name used by different manufacturers over the years. The best known is Australia's Holden Commodore, sold from 1978 until 2020 and for decades the country's most popular family and performance car. European buyers knew the Opel Commodore, a six-cylinder coupe and sedan range produced from 1967 into the early 1980s. The name first appeared on American Hudsons in the 1940s, and the title was later kept alive in very different markets by Opel and Holden.

Commodore models are remembered for strong, simple engines: Holden's long-running straight-six and locally built V8 designs, and Opel's smooth six-cylinder units, matched to manual and automatic transmissions. Many Holdens also served as police cars, taxis and touring-car racers, which is why repair knowledge of these models remains so widely sought in Australia and beyond.

Workshop manuals for Commodore models cover engine overhaul and tune-up, cooling and fuel systems, gearboxes and differentials, suspension and brakes, electrical wiring diagrams, torque specifications, diagnostic routines and service schedules for the exact model and engine variant being repaired. Because engines changed through each generation, the manuals are organised by year and engine code so owners can select the right document quickly.

DIY owners, independent garages and enthusiasts restoring classic Australian and European Commodore models all benefit from factory documentation, which records the correct procedures and settings needed to keep these well-loved cars reliable and enjoyable to drive. Correct factory data is especially useful for Holden's later V8 models and for imported Opel Commodores that are now collector vehicles in several countries.