Nothing.
Absolutely hands down the best value for the money in the sports compact car segment. Civic killer performance, comfort and cargo capacity plus the price and style to beat any domestic vehicle on the road.
That car is the crappiest of the sx series and is nothing compared to even the non-turboed 300ZX's, at least in terms of acceleration and speed.
Got a 1989 180sx with turbo back exhaust and a t28 running 11psi. Unreal car to get around in, still draws looks. To whoever said that a 300zx n/a will beat one.. you have to be dreaming. You can't compare a 180sx to a GT Cruiser.