The Kia Optima III, launched in 2011, represented a significant step forward for the Korean automaker, aiming to challenge established mid-size sedan competitors. Within the Optima III range, the 2.4 CVVT (180 Hp) Automatic variant occupied a crucial position as the volume seller, offering a balance of performance, fuel efficiency, and features appealing to a broad customer base. Production of this specific configuration spanned the 2011 model year, forming a key part of the initial rollout of the third-generation Optima. It was built on the TF platform, shared with Hyundai’s i45 (Sonata in North America), and marked Kia’s increasing focus on design and overall refinement.
Technical Specifications
| Brand | Kia |
| Model | Optima |
| Generation | Optima III |
| Type (Engine) | 2.4 CVVT (180 Hp) Automatic |
| Start of production | 2011 |
| End of production | 2011 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | Sedan |
| Seats | 5 |
| Doors | 4 |
| Fuel consumption (combined) | 8.1 l/100 km (29 US mpg, 34.9 UK mpg, 12.3 km/l) |
| CO2 emissions | 192 g/km |
| Fuel Type | Petrol (Gasoline) |
| Acceleration 0 – 100 km/h | 9.5 sec |
| Acceleration 0 – 62 mph | 9.5 sec |
| Acceleration 0 – 60 mph | 9 sec |
| Maximum speed | 210 km/h (130.49 mph) |
| Emission standard | Euro 4 |
| Weight-to-power ratio | 8 kg/Hp, 125.3 Hp/tonne |
| Weight-to-torque ratio | 6.2 kg/Nm, 160.9 Nm/tonne |
| Power | 180 Hp @ 6000 rpm |
| Power per litre | 76.3 Hp/l |
| Torque | 231 Nm @ 4000 rpm (170.38 lb.-ft. @ 4000 rpm) |
| Engine layout | Front, Transverse |
| Engine displacement | 2359 cm3 (143.96 cu. in.) |
| Number of cylinders | 4 |
| Engine configuration | Inline |
| Cylinder Bore | 88 mm (3.46 in.) |
| Piston Stroke | 97 mm (3.82 in.) |
| Compression ratio | 10.5:1 |
| Number of valves per cylinder | 4 |
| Fuel injection system | Multi-port manifold injection |
| Engine aspiration | Naturally aspirated engine |
| Valvetrain | DOHC, CVVT |
| Kerb Weight | 1436 kg (3165.84 lbs.) |
| Max. weight | 1980 kg (4365.15 lbs.) |
| Max load | 544 kg (1199.31 lbs.) |
| Trunk (boot) space – minimum | 436 l (15.4 cu. ft.) |
| Fuel tank capacity | 70 l (18.49 US gal | 15.4 UK gal) |
| Length | 4845 mm (190.75 in.) |
| Width | 1830 mm (72.05 in.) |
| Height | 1455 mm (57.28 in.) |
| Wheelbase | 2795 mm (110.04 in.) |
| Front track | 1601 mm (63.03 in.) |
| Rear (Back) track | 1601 mm (63.03 in.) |
| Front overhang | 965 mm (37.99 in.) |
| Rear overhang | 1085 mm (42.72 in.) |
| Drag coefficient (Cd) | 0.285 |
| Minimum turning circle | 10.9 m (35.76 ft.) |
| Drivetrain Architecture | ICE, Front wheel drive |
| Number of gears | 6 |
| Gearbox type | Automatic transmission |
| Front suspension | Independent, McPherson with coil spring and anti-roll bar |
| Rear suspension | Independent multi-link spring suspension with stabilizer |
| Front brakes | Ventilated discs |
| Rear brakes | Disc |
| Assisting systems | ABS |
| Steering type | Steering rack and pinion |
| Tires size | 205/65 R16 |
| Wheel rims size | 6J x 16 |
Powertrain & Engine Architecture
The heart of the Optima III 2.4 CVVT Automatic is the Theta II 2.4-liter inline-four cylinder engine. This engine, internally designated as the G4KD, is a naturally aspirated powerplant featuring multi-port fuel injection and a double overhead camshaft (DOHC) valvetrain. Kia’s Continuously Variable Valve Timing (CVVT) technology optimizes valve timing for improved performance and fuel efficiency across the engine’s operating range. The engine produces 180 horsepower at 6000 rpm and 231 Nm (170 lb-ft) of torque at 4000 rpm. Paired with this engine is a six-speed automatic transmission, providing smooth shifts and contributing to the vehicle’s overall refinement. This transmission was chosen for its balance of efficiency and responsiveness, catering to the needs of everyday drivers.
Driving Characteristics
The 2.4L engine and six-speed automatic combination delivered adequate, though not exhilarating, performance. Acceleration from 0 to 60 mph took approximately 9 seconds, making it competitive within its class but noticeably slower than Optima models equipped with the optional 2.0L Turbocharged engine. The automatic transmission was tuned for comfort and fuel economy, with gear ratios optimized for relaxed cruising. While it offered a manual shift mode, it wasn’t particularly sporty. The power delivery was linear, making it predictable and easy to manage in everyday traffic. Compared to the manual transmission versions, the automatic sacrificed some responsiveness, but gained in convenience.
Equipment & Trim Levels
The 2.4 CVVT Automatic trim typically included standard features such as air conditioning, power windows and locks, a six-speaker audio system with USB and auxiliary inputs, and keyless entry. Higher trim levels, such as the Limited, added features like leather upholstery, a sunroof, heated front seats, and a premium audio system. The interior design focused on a modern aesthetic with a user-friendly layout. Optional extras included navigation systems and upgraded alloy wheels. The base cloth upholstery was durable and comfortable, while the dashboard featured a straightforward design with easy-to-read gauges.
Chassis & Braking
The Optima III utilized a front-wheel-drive layout with an independent McPherson strut suspension in the front and an independent multi-link suspension in the rear. This suspension setup provided a comfortable ride quality, absorbing bumps and irregularities in the road effectively. The front brakes were ventilated discs, while the rear brakes were solid discs, providing adequate stopping power for the vehicle’s weight. Anti-lock Braking System (ABS) was standard, enhancing safety during emergency braking situations. Stabilizer bars were included both front and rear to reduce body roll during cornering.
Market Reception & Comparison
The Kia Optima III 2.4 CVVT Automatic was generally well-received by automotive critics. It was praised for its stylish design, spacious interior, and comfortable ride. However, some reviewers noted that the engine lacked the punch of some competitors, and the automatic transmission wasn’t as engaging as some dual-clutch transmissions available in other vehicles. Fuel economy was considered average for the class, at around 29 mpg combined. Compared to the more powerful 2.0T models, the 2.4L offered a more affordable entry point into the Optima range, appealing to buyers prioritizing value and fuel efficiency over outright performance.
Legacy
The Theta II 2.4L engine, when properly maintained, proved to be a relatively reliable powerplant. Common issues included occasional oil consumption and, in some cases, timing chain wear at higher mileage. The six-speed automatic transmission also demonstrated good durability. In the used car market, the Optima III 2.4 CVVT Automatic remains a popular choice due to its affordability, practicality, and relatively low running costs. It represents a turning point for Kia, showcasing the brand’s commitment to quality and design, and helped establish the Optima as a serious contender in the mid-size sedan segment.
