Having lived in Singapore recently for a couple of years...on a VERY good expat package, I'll just modify listening watch's figure a little.
90K for a new Jap/EU car? I think not...unless it's a very basic, small, very gutless Hyundai....something that might cost 12K in Oz...does that include the 25k 10yr 'rego'..what do they call it?
Long term car rental = $1000/mth...much better idea.
Housing. Yup 2400/mth will get you a VERY nice condo out of town with all the amenities...mine was at Seasons Park at Yio Chu Kang and had 3+1 bedrooms/amah room/huge verandah overlooking Seletar Resevoir (12th floor)/huge kitchen/big living+dining room/split systems in every room baring kitchen. Complex had huge main pool + smaller pools for kids, Gym, 3 shade cloth covered tennis courts, pool room, bbq area, kids swings...10 minutes walk from MRT..5 minutes in the bus...10 minutes from my office/hangar at WSSL on my motor bike.
School fees at Australian International School = 20k/annum ++
Have no real argument for the other stuff...seems ball park, some a little low-some a little high.
With the exception of cars and schools it's probably not a LOT more expensive than Sydney in general terms.
Our F/Os were on Sin$90k (net/local package) and seemed to live reasonably well....spent more time in nightclubs and discos than I did as a 20 something