| July, 1962 |
It all begins. BMC B series 1798cc engine 18G, banjo rear axle, positive ground. |
| Feb, 1964 |
Closed circuit breathing. 18GA replaces 18G engine number. |
| Sep, 1964 |
18GB five main bearing engine series introduced with standard oil cooler and electric tach from chassis #48766. |
| Mar, 1965 |
12 gallon fuel tank replaces 10 gallon from chassis #56773. Door handles changed to pushbutton type. |
| Oct, 1965 |
GT coupe version of MGB introduced from chassis #71933. |
| Nov, 1966 |
Front sway bar on Roadster from chassis #108039. |
| 1967 |
Reverse lamp - Roadster from chassis #100414, GT from chassis #106928. |
| 1967 |
Tube rear axle on the Roadster from chassis #129287 (wire wheels) and #132463 (disc wheels). Tube axle used on the GT since introduction. |
| Oct, 1967 |
MK II MGB introduced from chassis #GHN-4-138401 on. Features dual brake master cylinders, negative ground electrics, alternator and all synchro transmission. Automatic transmission offered as option. |
| Sep, 1970 |
New recessed grille used through the 1972 model year. Air pump standard, new convertible top, courtesy light. |
| Oct, 1971 |
MK 3 introduced from chassis #258001 with 18V engine number. |
| 1973 |
New black faced grille, heated rear window standard on GT, from chassis #294251, black wipers from #296001. |
| Sep, 1974 |
74-1/2 model introduced, black soft nose front and rear bumpers, raised height, single Zenith/Stromberg carburetor, single 12 volt battery, servo assisted brakes and catalytic converter for California models. |
| Dec, 1974 |
GT withdrawn from the US market. |
| June, 1975 |
Overdrive standardized as optional equipment. |
| Aug, 1976 |
Thicker sway bar front, rear sway bar standard, 2 electric cooling fans, gear lever OVD switch, sealed cooling system. |
| Oct 24, 1980 |
MG production ceases at Abingdon as plant closes. |
