| 1 |
Group N up to 1400cc |
| 2 |
Group N 1401cc to 1600cc |
| 3 |
Group N 1601cc to 2000cc |
| 4 |
Group N over 2000cc |
| 5 |
Group A up to 1400cc |
| 6 |
Group A 1401cc to 1600cc |
| 7 |
Group A 1601cc to 2000cc |
| 8 |
Group A over 2000cc |
| 9 |
Modified cars up to 1450cc - 2 wheel drive, normally aspirated |
| 10 |
Modified cars 1451cc to 1650cc, not more than 2 valves per cylinder, 2 wheel drive, normally aspirated |
| 11 |
Modified cars 1451cc to 1650cc, more than 2 valves per cylinder, 2 wheel drive,normally aspirated |
| 12 |
Modified cars 1651cc to 2100cc, not more than 2 valves per cylinder, 2 wheel drive, normally aspirated |
| 13 |
Modified cars 1651cc to 2100cc, more than 2 valves per cylinder, 2 wheel drive, normally aspirated |
| 14 |
Modified cars 2101cc to 3500cc, 2 wheel drive, normally aspirated or turbo-charged |
| 15 |
Four-wheel drive whose homologation has expired and other specified cars |
| 16 |
Junior. As defined in MI Yearbook 2011 |