From 1977 to 1980, when British Leyland dropped out of U.S. racing, he won both the SCCA ProRally series and the North America Rally Championships. In 1981, he competed with an Audi 80 and Peugeot 504, but they were not competitive compared to Rod Millen's factory Mazda RX-7 rally cars.
In addition to his North American schedule, Buffum cherry-picked rallies in Europe, where he became the first and still the only American to win a European Rally Championship event, taking the 1983 Sachs Rally in West Germany and the 1984 Cyprus Rally, both with Audi Quattro. He also ran the 1969 Monte Carlo Rally in a Porsche 911. Buffum is the only driver in the world to compete in at least one World Rally Championship event in five continuous decades (1960's, 1970's, 1980's, 1990's and 2000).
Since the late 1980s, Buffum has owned and managed Libra Racing based in Colchester, Vermont. He has been responsible for building cars for the Hyundai Factory rally programme in the US and has worked alongside Vermont Sports Car on their Subaru Factory programme as a consultant. In 2009, he built the first open class Mitsubishi Evolution X, to campaign in the Rally America national series and the Canadian Rally series.
In 2014, Buffum was elected to the Vermont Sports Hall of Fame.
Rally Racing News John Buffum biography. Retrieved December 31, 2004.
- Libra Racing, John Buffum's company.
- JohnBuffum.com - John Buffum's homepage.
- In Like a Lamb...Out LIke a Lion Champion co-driver and former National PRO Rally Manager, Tom Grimshaw, tells John Buffum's story and the course of rally racing in the United States.
- 2006 SCCA Hall of Fame Class Announced
- Vermont Sports Hall of Fame Bio