The XC numbers (signifying "experimental car") were applied to projects headed up by Alec Issigonis at Longbridge. These cars (with the exception of XC9000) all went on to be developed into production cars.
| Codename |
Details |
Dates |
Picture |
|---|
| XC9000 |
1.5 litre saloon
Forerunner to the XC9001 – rear wheel drive saloon, resembled a due to its elongated wheelbase. |
Dev: 1956-1957 |
 |
|---|
| XC9001 |
1.5 litre saloon
Initially a front wheel drive XC9000, but restyled by Longbridge and Pininfarina. Renamed XC9005 in 1960. |
Dev: 1958-1960 |
 |
|---|
| XC9002 |
BMC 1100/1300
Initially a scaled down XC9001, but later restyled by Pininfarina. Became known as ADO16 from around July 1959. |
Dev: 1957-1959 |
 |
|---|
| XC9003 |
BMC Mini
Also known as the ADO15.
|
Dev: 1957-1959 |
 |
|---|
| XC9005 |
BMC 1800/2200
XC9001 refined in style and re-engined with the 1.8-litre version of the B-series engine. Became known as ADO17 from 1960. |
Dev: 1960-1962
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