The win, remarkably Sutton’s first of his BTCC career at the Northamptonshire circuit, came after long-time leader Jake Hill suffered a misfire just as the race restarted following a half-distance safety-car interlude.
Hill, starting from pole in his West Surrey Racing BMW 330e M Sport, looked odds-on for victory, especially with Sutton, Tom Ingram, Colin Turkington and Dan Cammish starting in the bottom six following the dramatic opening race of the day.
