Complex sentence: Austin was merged into the British Motor Corporation (BMC) in 1952, and unusually for BMC at the time, the body shape was only sold as an Austin; no other marque names were used to badge engineer it.
Split into simpler sentences: Austin was merged into the British Motor Corporation (BMC) in 1952. Unusually for BMC at the time, the body shape was only sold as an Austin; no other marque names were used to badge engineer it.