Number 6 in our list of Australia's worst cars goes to the Datsun 120y. Based on the chassis of the Datsun 1200 that was produced from 1970 to 1974 when the 120y was launched on the Australian market as its replacement. Both cars were known as the Sunny in Japan, but perhaps it was a good thing the 120y was not named this in Australia as it was a pretty dull car. Featuring a 1.2 L engine, dull breaks, a choppy ride and a sloppy gearbox, the 120y was surprisingly popular. We are not sure why that is as it was an fairly ordinary looking too. You could option up to the Japanese built 2 door coupe version that was a popular way to look sporty when you are taking almost 17 seconds to get from 0 to 100km/h. The 120y was replaced by the next series in the very dull Sunny line (and also now named Sunny) in 1978.