Hyundai launches special-edition Coupe
The car has the same 141bhp 2.0-litre petrol engine as the standard car, offering a 0-62mph time of 9.3secs and a top speed of 129mph.
However, sportier springs and lowered suspension are fitted, which Hyundai says help improve the car's handling.
Exterior changes include 17-inch alloy wheels, a special exhaust pipe and a larger rear spoiler with integral brake lights.
In the cabin, the TSIII has heated leather sports seats, chrome styling, air-con and cruise control.
The TSIII costs from £19,595 - the same price as the range-topping 2.7-litre V6 Coupe SIII and £1575 more than the 2.0-litre Coupe SIII.
Buyers willing to haggle are much more likely to get a bigger discount on standard models.