Mercedes-Benz O405 MkV
The first Mercedes-Benz O405 bus, 3071, was delivered in December 1987. After trialling several different features, 256 similar vehicles entered service from early 1988.

As part of this batch of buses, Sydney's first Compressed Natural Gas buses, 3251 and 3252, joined the State Transit fleet in July 1989.
Facts & Figures
| Chassis: | Mercedes-Benz O405 |
| Built By: | Pressed Metal Corporation |
| Length: | 11.10 metres |
| Seating capacity: | 43 |
| 47 (buses 3134, 3143, 3237) | |
| 49 (buses 3083, 3112, 3113) | |
| Fuel: | Diesel (buses 3071, 3083-3250, 3305-3380) |
| Compressed Natural Gas (buses 3251, 3252) | |
| Number currently in service: | 257 |
| Fleet numbers: | 3071, 3083-3252, 3305-3380 |
| Years entered service: | 1987-1990 |
| Depot Locations: | Brookvale, North Sydney, Willoughby, Waverley, Randwick, Kingsgrove, Newcastle, Ryde |

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