After a change in legislation meaning that cars were now taxed based on displacement, with a major threshold at 1.5 litres, the Capital was available with a Twin Cam, 16-valve B5 engine in May 1990. This surprising development had on tap at 6,500 rpm. Top speed was , the same as for the fuel-injected 1.5, but 0–100 km/h acceleration time dropped from 13.5 to 10.0 seconds. After the 1990 introductions of stronger competitors such as the Daewoo Espero and Hyundai Elantra, the Capital received a facelift in November 1991. The facelift was not very deep, the most obvious difference being the relocation of the rear license plate to the bumper rather than between the taillights. The facelift version offered the 1.5 engine as well as a downgraded version of the 1.8, now to carburetted specifications and producing a mere at 5000 rpm. This was mainly intended for taxi usage. There was also an export version with the carburetted two-valve 1.5 for Kia's very few export markets, with .