1981 Australian Drivers' Championship
|1981 Australian Drivers' Championship|
The 1981 Australian Drivers' Championship was a CAMS sanctioned Australian motor racing title open to racing cars complying with Australian Formula 1. It was the 25th Australian Drivers' Championship. The title winner, Alfredo Costanzo  was awarded the 1981 CAMS "Gold Star".
The championship was contested over a two round series.
|Round ||Circuit ||Date ||Format ||Round winner ||Car |
|1||Sandown Park||22 February||One race||Alfredo Costanzo||McLaren M26 Chevrolet|
|2||Amaroo Park||12 July||Two heats||Alfredo Costanzo||McLaren M26 Chevrolet|
Car competed in two classes:
Championship points were awarded at each round on a 9-6-4-3-2-1 basis to the first six finishers in each class. Additional points were awarded at each round on a 4-3-2-1 basis to the first four finishers outright, regardless of class.
Where rounds were contested over more than one heat, round placings were determined by allocating points to the first 14 placegetters in each heat on a 20-16-13-11-10-9-8-7-6-5-4-3-2-1 basis and then aggregating these points. Where more than one driver earned the same number of points the relevant round placing was awarded to the driver who was higher placed in the last heat.
|Position||Driver ||Car ||Class||Entrant ||San.||Ama.||Total|
|1||Alfredo Costanzo||McLaren M26 Chevrolet||Over 1600cc||Porsche Cars Australia||13||13||26  |
|2||Ray Hanger||March 77B||Up to 1600cc ||Ray Hanger||9||10||19 |
|3||Rob Butcher||Lola T332 Chevrolet||Over 1600cc||John Blanden||6||9||15 |
|4||John Bowe||Elfin MR9 Chevrolet||Over 1600cc||Ansett Team Elfin||9||-||9|
|5||Ivan Tighe||Chevron B37||Over 1600cc||Ivan Tighe||-||6||6|
|6||Peter Edwards||Lola T332 Chevrolet||Over 1600cc||Peter Edwards||4||-||4|
|7||Bob Minogue||Lola T430||Over 1600cc||Bob Minogue||-||3||3|
|8||Colin Trengrove||Lola T332 Chevrolet||Over 1600cc||Colin Trengrove||2||-||2|
|=||John Wright||Lola T400 Chevrolet||Over 1600cc||John Wright||-||2||2|
|10||Peter Middleton ||Elfin MR8||Over 1600cc||Peter Middleton||1||-||1|
|=||Barry Singleton||Gardos||Over 1600cc||Barry Singleton||-||1||1|
The conditions for the 1981 championship were published by CAMS under the name "Australian Formula 1 Championship". Australian Motor Racing Year 1981/82 uses both Australian Drivers Championship and Australian Formula One Championship in its review of the series. Racing Car News, January 1982 uses Australian Drivers Championship. CAMS uses Australian Drivers' Championship in its historical records  and that has been followed here.
- Conditions for Australian Titles, 1981 CAMS Manual of Motor Sport, pages 91 to 93
- Records Titles & Awards, 2002 CAMS Manual of Motor Sport, page 14-4
- Australian Drivers Championship, Australian Motor Racing Year 1981/82, pages 130 to 135
- Lola T430, www.oldracingcars.com Retrieved on 13 April 2013
- Aust. Drivers C'ship, Racing Car News, January 1982, page 36
- Points for each round have been determined by applying the points system as published in the 1981 CAMS Manual of Motor Sport to the race results as published in Australian Motor Racing Year 1981/82
- Australian Drivers Championship, Australian Motor Racing Year 1981/82, page 135
- The championship table on page 131 of Australian Motor Racing Year 1981/82 shows Costanzo scoring 9 points for each of his two round wins for a total of 18 points. This conflicts with the text on page 135 of the same publication which shows his score after Amaroo Park as 26 points. It also conflicts with Racing Car News January 1982 which shows 26 points and with the points system as outlined in Conditions for Australian Titles, 1981 CAMS Manual of Motor Sport, as referenced.
- Listed as Peter Middleton in Racing Car News and as Chris Middleton in Australian Motor Racing Year