Everything else being equal I'd get a used sports car over a new compact car. Depreciation is a bitch and all other costs like parking and road tolls will be the same. 400k-500k will get you a used Porsche 911, Aston Martin DB9, Maserati Granturismo or maybe even an Audi R8. Insurance will be less than a new Tesla, they will depreciate way less and will be about as hard to sell when you wanna leave HK and you can repair it for relatively low cost at an independent shop instead having to use the expensive dealer just to keep your warranty. Since you don't NEED a car in HK, why not get one that is at least fun to drive?