For the transmission, a newly developed, electronically controlled 4-speed automatic transmission called the Super ECT (Electronically Controlled Transmission) was adopted. This transmission incorporated high precision hydraulic control for smooth shift quality and good response. Other highly advanced control technologies included an ascending and descending control and a flex lockup control. The flex lockup control, together with the reduced operating friction of the transmission itself, contributed to fuel economy, and equipping the ninth generation Corolla with this Super ECT resulted in good fuel efficiency with excellent response suited for the next-generation global standard.
With the adoption of a new platform, a MacPherson strut suspension was adopted for the front, and an ETA-beam or a double wishbone suspension was adopted for the rear. A MacPherson strut suspension with an L-shaped lower arm similar to that of the past was adopted for the front suspension but was entirely redesigned, and the suspension geometry was optimized. Also, stabilizers were adopted in all vehicles to ensure roll rigidity and superior riding comfort. The ETA-beam suspension adopted on the rear of FF (front engine, front wheel drive) models was a type of torsion beam suspension. This suspension uses the changes in the camber angle and toe angle that occur due to the toe-correct bushing and torsion of the axle beam to achieve riding comfort and stability both when turning and when driving in a straight line. The rear suspension used in the 4WD (four wheel drive) models was a compact double wishbone suspension with optimally positioned arms and a sub frame. This suspension was also equipped with a stabilizer, an ideal suspension configuration for 4WD properties.
The steering mechanism was also completely redesigned, and a power steering system was adopted in all vehicles. In some models, the newly developed column-type electric power steering system was adopted. This power steering system calculated the amount of assistance necessary based on vehicle speed and engine speed, used a motor and speed reduction device to generate the assist torque when steering and provided a natural steering feeling. Also, because assist force was only generated when steering, better fuel efficiency performance was achieved and the structure was simplified with fewer component parts.
In addition to the attractive appearance, aerodynamic characteristics were also pursued for the ninth generation Corolla, and smooth air flow was ensured along the underbody. Also, wind noise was reduced and aerodynamic performance was improved with a flush surface design for the merging points of the glass, pillars and roof and by adopting a fender liner spats.