Developed from the previous model, the new Kia Rio's suspension and running gear has been engineered to carry over that popular car's responsive handling while improving stability, ride quality and refinement - in line with heightened customer expectations.

The electric power-assisted rack and pinion steering now features a combined torque/angle sensor to protect against side wind gusts. It is geared to require 2.82 turns (lock-to-lock) and the steering wheel is adjustable for both height and reach.

Mounted on a sub-frame to isolate road shocks, the MacPherson strut front suspension is largely unchanged, with small alterations to accommodate the new model's longer wheelbase, wider track and different weight distribution.

The CTBA (coupled torsion beam axle) at the rear is stiffer (reducing under-steer) and the strength of the connection between the trailing-arms and the stub-axles is doubled, improving stability. Wheel travel is increased by 10 mm and the geometry is improved to reduce bump-steer and deliver a more compliant ride.

An all-disc braking system - with 256 / 262 mm (front / rear) diameter discs - is standard on all new Kia Rio models fitted with ESC (electronic stability control). Models not fitted with ESC feature 203 x 10 mm drum brakes at the rear. The performance of the braking system is supported by ABS anti-lock, electronic brake force distribution and emergency 'brake assist' systems.