It's too difficult to compare the earlier touring car drivers to more recent ones as the cars and regulations have changed so much. I know Jim Clark won the BTCC in 1964 but I don't really regard him as a touring car driver. So to make things simple I'll just compare drivers from the last decade or so who have raced in Europe.

1) Yvan Muller -I reckon he is the best F/WD racer around
2) Laurent Aiello -Successful in F/WD Touring Cars and R/WD DTM
3) Alain Menu -Only man to win the BTCC supertouring title twice, but prone to the occasional error
4) Fabrizio Giovanardi - How many titles?
5) Bernd Schneider - How many DTM titles?