Melbourne world's most liveable city, Mumbai among worst

Australia's second-largest city Melbourne has been rated the world's best city to live in, and Mumbai one of the worst, according to a new survey.

In the survey of 140 cities around the globe, Melbourne secured the top slot with a score of 97.5%, followed by Austrian capital Vienna (97.4%), and Vancouver in Canada (97.3%) which was rated the best last year.

Three other Australian cities in the top 10 included the country's capital Sydney, which ranked sixth best, while Perth and Adelaide bagged a joint eighth slot, the latest Economist Intelligence Unit's (EIU) Global Liveability Survey revealed.

Canada's Toronto secured the fourth position while Finland's capital Helsinki bagged the seventh place; Paris came 16th and Tokyo 18th; Hong Kong was ranked at 31st, San Francisco at 51st, as did Singapore, with both pipping London at 53rd and New York at 56th, the 'age.com.au' reported.

In the Asian region, the giant Chinese cities of Beijing and Shanghai came in at 72nd and 79th positions respectively, while India's financial capital Mumbai languished at 116th, just above Jakarta in Indonesia at 119th.

In the MiddleEast, the Libyan capital Tripoli, which has fallen under the control of rebel fighters in recent days, dived to 135th. Other worst places to live were Port Moresby in Papua New Guinea, Bangladesh's Dhaka and Zimbabwe's Harare.

According to the EIU, every city is assigned a rating of relative comfort for over 30 qualitative and quantitative factors across five broad categories -- stability; healthcare; culture and environment; education; and infrastructure.

Each factor in a city is rated as acceptable, tolerable, uncomfortable, undesirable or intolerable.