A - Accident, Spun Off; B - Brakes; C - Collision; E - Engine Failure; EX - Exhaust; F - Fuel; G - Gearbox; H - Hydraulics; L - Electrical; M - Mechanical Failure; O - Oil; R - Retired; ST - Steering; S - Suspension; T - Transmission; W- Water; WH - Wheel; DSQ - Disqualified; DNS - Did Not Start Number and letter indicates driver still classified