CAF is building 75 coaches of five different types for use on overnight services from London Euston to Glasgow, Edinburgh, Fort William, Inverness, and Aberdeen. The first coaches are due to enter service in 2018.
The vehicles will be formed into four sets of 16 coaches with 11 spare vehicles.
Caledonian Sleepers will offer various types of accommodation including en-suite berths, standard berths, standard seats, and pod flatbeds. Each rake will also include a brasserie-style Club Car.
The order is being financed by Caledonian Sleepers Rail Leasing, a subsidiary of Lombard North Central, which is part of the Royal Bank of Scotland Group, with the aid of a £60m grant from the Scottish government.