First-series motor cars had 59 second-class seats and trailers 72 seats (first class in the T cars or second class in the BT cars), divided into smoking and non-smoking sections. For the second series the internal partitions were removed, and capacities increased to 65 and 80 passengers respectively for a total gain of 50 seats per seven-car train. Smoking was then only permitted in the middle third of each carriage. Later, a policy change saw smoking permitted in the whole of each Motor carriage, and not at all in trailers.