Since there was such a multiplicity of ID models, the following table attempts to identify the principal technical characteristics.
The ID range employed much the same range of engines as the DS, initially with lower power output. 
Transmissions were always manual, 4 speed at first but 5 speeds were offered later.
Similarly, steering was originally unassisted but power steering became an option and eventually standard on some models.
Again, braking was originally unassisted but later, a simplified version of the DS fully powered system was fitted.
Technical improvements were introduced more or less in line with those of the DS.

Model

Dates

Engine

Comments

ID 19 Normale

1957 - 1960

1 911cc, 62 bhp @ 4 000 rpm

Base model employing 11 CV engine

ID 19

1957 - 1964

1 911cc, 66 bhp @ 4 500 rpm

Available in Luxe and Confort trim and also Voiture de Maître with glass partition separating front and rear compartments
Fully powered brakes introduced in 1961
Power steering available as an option from 1962 

ID 19 Export

1962 - 1965

1 911cc, 83 bhp @ 4 500 rpm

Some export models were fitted with this DS engine
Fully powered brakes introduced in 1961
Power steering available as an option from 1962

ID 19

1964 - 1965

1 911cc, 75 bhp @ 4 500 rpm

Power steering available as an option from 1962

ID 19

1966

1 911cc, 81 bhp @ 4 500 rpm

ID 19

1966 - 1968

1 985cc, 84 bhp @ 5 250 rpm

ID 19

1968 - 1969

1 985cc, 91 bhp @ 5 500 rpm

D Spécial

1969 - 1971

1 985cc, 91 bhp @ 5 500 rpm

D Spécial

1971 - 1972

1 985cc, 98 bhp @ 5 500 rpm

ID 20

1968 - 1969

1 985cc, 103 bhp @ 5 500 rpm

D Super

1969 - 1972

1 985cc, 103 bhp @ 5 500 rpm

From 1970, a five speed gearbox was available as an option on all manual cars

D Spécial and D Super

1972 - 1975

1 985cc, 108 bhp @ 5 500 rpm

D Super 5

1972 - 1975

2 175cc, 115 bhp @ 5 500 rpm