According to http://www.car-nection.com/jagbase/
the first V-12 to be
introduced into a production car was the XKE in 1971. Prior to that, the
engine of choice was primarily the 4.2 litre. The V-12, however was first
manufactured in 1954. Here is an article about the V-12 as published by Jag
"R P" <email@example.com> wrote in message
> What was the first year the V-12 engine was availble?.......I'm thinking
> 71-72, a friend of mine says 68-69.