Charles
Google
Best go karting track in Singapore, by far.
Uses petrol karts, which in my opinion are better than electric ones which can sometimes be hit or miss at other places.
Very well designed track, outdoors, and also has leaderboard displayed on the Jumbotron screen. Also very reasonable prices, cheapest per minute as far as I'm aware in Singapore, though it is further from the centre so may need to account for a travelling.