From 2000–2005 Optimas were a rebadged variant of the Hyundai Sonata , differing only from the Sonata in minor exterior styling details and equipment content.
The new Theta II 2. 4-liter I4 employs dual continuously variable valve timing (CVVT) and a variable intake system (VIS) to increase power to 131 kW (176 hp) while returning improved fuel consumption over its predecessor. Torque is rated at 229 N⋅m (169 lbf⋅ft) there is 2. 0 L for other markets middle east etc. a 2. 0 L 4cyl with 5 manual or 4 automatic gearbox with power 164 hp (122 kW)
at 6200 rpm and 197 N⋅m (145 lb⋅ft) torque takes it from 0–100 km/h (0–62 mph) in 9. 2 sec for manual and 10. 1 for auto with top speed up to 208 km/h (129 mph) outside the US. The 2. 7-liter V6 has few changes to the previous model, though power is increased to 144 kW (193 hp), and torque to 249 N⋅m (184 lbf⋅ft) with standard 5-speed automatic takes it from 0–60 mph (0–97 km/h) in 8. 9sec with top speed up to 220 km/h (137 mph). A five-speed manual transmission is standard in the base model, and a five-speed automatic is included with mid- and high-end levels (or as an option in the base model).