The occasion of 1 nationality won the Formula 1 driver's and MotoGP/500cc rider's world title together in the same year was happened 10 times in 1950, 1952, 1958, 1962, 1963, 1964, 1965, 1973, 1976 and 1978.
Here are the lists:
1. Italy 1950 (Giuseppe Farina and Umberto Masetti)
2. Italy 1952 (Alberto Ascari and Umberto Masetti)
3. United Kingdom 1958 (Mike Hawthorn and John Surtees)
4. United Kingdom 1962 (Graham Hill and Mike Hailwood)
5. United Kingdom 1963 (Jim Clark and Mike Hailwood)
6. United Kingdom 1964 (John Surtees and Mike Hailwood)
7. United Kingdom 1965 (Jim Clark and Mike Hailwood)
8. United Kingdom 1973 (Jackie Stewart and Phil Read)
9. United Kingdom 1976 (James Hunt and Barry Sheene)
10. United States 1978 (Mario Andretti and Kenny Roberts Sr.)
Since 1979 until now, no 1 nationality has won the Formula 1 driver's title and MotoGP rider's title together respectively in the same year.
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