The Kia K5 replaces the Optima, and although it looks completely different it again it shares a lot with the Hyundai Sonata.
K5
Sonata
Both the Kia K5 and Hyundai Sonata use the new N3 platform.
K5
Sonata
Although both cars have very different styling, the overall proportions are the same. Both are sedans with a fastback design.
K5
Sonata
The Kia and Hyundai both a 2,850mm (112.2-inch) wheelbase. The Sonata is 4,900mm (192.9-in) long, and the K5 is 4,905mm (193.1-in) long.
K5
Sonata
In the US the Sonata's engines are: 2.5L I4 with 142kW (191hp) and 245Nm (181 lb-ft), a 1.6L turbo I4 with 134kW (180hp) and 264Nm (195 lb-ft), and a 2L I4 hybrid with 143kW (192hp).
K5
Sonata
For the US, the K5 is going for a sportier image. It will only be available with turbo engines: the 134kW (180hp) 1.6L I4 from the Sonata, and a more powerful 2.5L turbo I4 with 216kW (290hp) and 422Nm (311 lb-ft).
K5
Sonata
The dashboard and interior, like the exterior, has the same bones but different styling. Again the K5 is sportier, and the Sonata more restrained. Note the Kia has a traditional gear shifter, and the Hyundai has a controller dial for the automatic transmission.
K5
Sonata
The K5 is available with sportier seats with big side bolsters.
