1948 South Australian 100
The 1948 South Australian 100 was a motor race staged at the Lobethal Circuit in South Australia on 1 January 1948. It was contested as a handicap race with the slowest cars starting first and the fastest cars last. The race was staged over 12 laps, a total distance of 105 miles. It was open to cars of any engine size.
The race, which was the second South Australian 100 to be held at Lobethal, was won by Jim Gullan driving a Ballot Oldsmobile.
Results
| Position | Driver | No. | Car | Handicap | Time | Laps |
| 1 | Jim Gullan | 16 | Ballot Oldsmobile | 11:35 | 81m 5s | 12 |
| 2 | Granton Harrison | 11 | Phillips Ford V8 | 10:10 | 79m 49s | 12 |
| 3 | Ron Edgerton | 32 | MG TC Special | 16:00 | 86m 19s | 12 |
| 4 | R. Hamilton | 30 | MG TC | 16:00 | 12 | |
| 5 | A. Eadie | 34 | MG TC | 16:00 | 12 | |
| 6 | Norman Andrews | 4 | Stewand Austin | 7:00 | 12 | |
| 7 | Jim Skinner | 24 | Ballot Ford V8 | 13:50 | 12 | |
| 8 | Harold Clisby | 29 | MG TC | 16:00 | 12 | |
| 9 | Rick Howard | 37 | Austin 7 Ulster | 20:00 | 12 | |
| 10 | Harold Tribe | 10 | Willys Mercury V8 | 10:10 | 12 | |
| 11 | David Harvey | 35 | MG TA | 16:00 | 12 | |
| 12 | Tony Ohlmeyer | 28 | MG TA | 15:00 | 12 | |
| 13 | Gordon Stewart | 26 | MG L-type Magna | 14:00 | 12 | |
| NC | Tony Gaze | 17 | HRG Aerodynamic | ? | 11 | |
| NC | Gavin Sandford-Morgan | 27 | MG C-type s/c | 15:00 | 11 | |
| NC | D. Howard | 39 | MG PB | 23:00 | 11 | |
| DNF | Jack Nind | 14 | MG TB Special | 11:00 | 9 | |
| DNF | Bill Patterson | 19 | MG TC | 12:35 | 8 | |
| DNF | John Barraclough | 18 | MG NE Magnette | 12:35 | 7 | |
| DNF | Doug Whiteford | 6 | Ford V8 Special | 9:00 | 3 | |
| DNF | Ern Seeliger | 2 | Itala Ford V8 | Scratch | 1 | |
| DNS | Lex Davison | 22 | MG TC | 13:00 | - | |
| DNS | Peter Vennermark | 9 | MG Q-type s/c | 9:35 | - |