The Kia Optima IV, specifically the 2.0 CVVL (163 horsepower) variant produced from 2018 to 2020, represents a mid-cycle refresh of the fourth-generation Optima (known as the K5 in more recent models). This facelift brought updated styling, enhanced technology, and refinements to the powertrain. Positioned as a mainstream offering within the Optima lineup, the 2.0L engine and automatic transmission combination aimed to provide a balance of fuel efficiency and adequate performance for everyday driving. It served as a step up from the base engine option, appealing to buyers seeking a more refined driving experience without the higher cost of the more powerful turbocharged engines.
Technical Specifications
| Brand | Kia |
| Model | Optima |
| Generation | Optima IV (facelift 2018) |
| Type (Engine) | 2.0 CVVL (163 Hp) |
| Start of production | 2018 |
| End of production | 2020 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | Sedan |
| Seats | 5 |
| Doors | 4 |
| Combined fuel consumption (WLTP) | 7.8-8.3 l/100 km (30.2 – 28.3 US mpg, 36.2 – 34 UK mpg, 12.8 – 12 km/l) |
| CO2 emissions (WLTP) | 177-188 g/km |
| Fuel consumption (urban) | 10.4-10.6 l/100 km (22.6 – 22.2 US mpg, 27.2 – 26.6 UK mpg, 9.6 – 9.4 km/l) |
| Fuel consumption (extra urban) | 6.1-6.3 l/100 km (38.6 – 37.3 US mpg, 46.3 – 44.8 UK mpg, 16.4 – 15.9 km/l) |
| Fuel consumption (combined) | 7.7-7.9 l/100 km (30.5 – 29.8 US mpg, 36.7 – 35.8 UK mpg, 13 – 12.7 km/l) |
| CO2 emissions | 176-180 g/km |
| Fuel Type | Petrol (Gasoline) |
| Acceleration 0 – 100 km/h | 9.4 sec |
| Acceleration 0 – 62 mph | 9.4 sec |
| Acceleration 0 – 60 mph | 8.9 sec |
| Maximum speed | 210 km/h (130.49 mph) |
| Weight-to-power ratio | 8.9 kg/Hp, 112 Hp/tonne |
| Weight-to-torque ratio | 7.4 kg/Nm, 134.7 Nm/tonne |
| Power | 163 Hp @ 6500 rpm |
| Power per litre | 81.5 Hp/l |
| Torque | 196 Nm @ 4800 rpm (144.56 lb.-ft. @ 4800 rpm) |
| Engine layout | Front, Transverse |
| Engine Model/Code | Nu / G4ND |
| Engine displacement | 1999 cm3 (121.99 cu. in.) |
| Number of cylinders | 4 |
| Engine configuration | Inline |
| Cylinder Bore | 81 mm (3.19 in.) |
| Piston Stroke | 97 mm (3.82 in.) |
| Compression ratio | 10.3:1 |
| Number of valves per cylinder | 4 |
| Fuel injection system | Multi-port manifold injection |
| Engine aspiration | Naturally aspirated engine |
| Valvetrain | DOHC, CVVL |
| Engine oil capacity | 4.3 l (4.54 US qt | 3.78 UK qt) |
| Coolant | 5.9 l (6.23 US qt | 5.19 UK qt) |
| Kerb Weight | 1455-1565 kg (3207.73 – 3450.23 lbs.) |
| Max. weight | 2000 kg (4409.25 lbs.) |
| Max load | 435-545 kg (959.01 – 1201.52 lbs.) |
| Trunk (boot) space – minimum | 510 l (18.01 cu. ft.) |
| Fuel tank capacity | 70 l (18.49 US gal | 15.4 UK gal) |
| Permitted trailer load with brakes (12%) | 1700 kg (3747.86 lbs.) |
| Permitted trailer load without brakes | 750 kg (1653.47 lbs.) |
| Permitted towbar download | 80 kg (176.37 lbs.) |
| Length | 4855 mm (191.14 in.) |
| Width | 1860 mm (73.23 in.) |
| Height | 1465-1475 mm (57.68 – 58.07 in.) |
| Wheelbase | 2805 mm (110.43 in.) |
| Front track | 1597-1607 mm (62.87 – 63.27 in.) |
| Rear (Back) track | 1604-1614 mm (63.15 – 63.54 in.) |
| Front overhang | 965 mm (37.99 in.) |
| Rear overhang | 1085 mm (42.72 in.) |
| Ride height (ground clearance) | 135 mm (5.31 in.) |
| Minimum turning circle (turning diameter) | 10.9 m (35.76 ft.) |
| Drivetrain Architecture | The Internal combustion engine (ICE) drives the front wheels of the vehicle. |
| Drive wheel | Front wheel drive |
| Number of gears and type of gearbox | 6 gears, automatic transmission |
| Front suspension | Independent, type 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 (Anti-lock braking system) |
| Steering type | Steering rack and pinion |
| Power steering | Electric Steering |
| Tires size | 215/60 R16; 215/55 R17; 235/45 R18 |
| Wheel rims size | 6.5J x 16; 7.5J x 17; 7.5J x 18 |
Powertrain & Engine Architecture
At the heart of this Optima variant lies the Kia-Hyundai Nu family of engines, specifically the G4ND 2.0-liter inline-four cylinder. This engine utilizes a naturally aspirated configuration and employs multi-point fuel injection. The engine’s “CVVL” (Continuously Variable Valve Lift) technology adjusts the intake valve lift based on engine load and speed, optimizing both performance and fuel efficiency. This system allows for a broader powerband and improved responsiveness. The engine produces 163 horsepower at 6,500 rpm and 196 Nm (144.56 lb-ft) of torque at 4,800 rpm. The engine is transversely mounted in the front of the vehicle. Paired with this engine is a six-speed automatic transmission, designed for smooth shifting and efficient power delivery. This transmission was a common choice for Optima models aimed at comfort and ease of use.
Driving Characteristics
The 2.0L Optima with the six-speed automatic delivers a comfortable and predictable driving experience. Acceleration from 0-60 mph takes approximately 8.9 seconds, which is adequate for daily commuting and highway merging, but noticeably slower than the turbocharged variants. The automatic transmission is tuned for fuel economy, resulting in relatively conservative gear ratios. While it offers a manual shift mode, it’s primarily geared towards providing a relaxed and effortless drive. The CVVL system helps to mitigate some of the typical drawbacks of a naturally aspirated engine, providing a usable amount of torque across a wider range of engine speeds. However, it lacks the punch and responsiveness of the turbocharged options.
Equipment & Trim Levels
The 2.0L Optima typically came standard with features such as air conditioning, power windows and locks, a touchscreen infotainment system with Apple CarPlay and Android Auto compatibility, and a rearview camera. Higher trim levels added features like leather upholstery, a sunroof, upgraded audio systems, and advanced driver-assistance systems (ADAS) such as automatic emergency braking, lane departure warning, and adaptive cruise control. The specific trim levels available varied by market, but generally, the 2.0L engine was offered in LX, S, and EX trims, with the EX representing the more well-equipped option.
Chassis & Braking
The Optima IV utilizes 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 provides a comfortable ride quality, absorbing bumps and irregularities in the road surface effectively. Braking duties are handled by ventilated front discs and solid rear discs, equipped with an Anti-lock Braking System (ABS). The steering is electrically assisted, providing light and precise steering feel. The chassis is designed to balance ride comfort with handling stability, making it suitable for everyday driving conditions.
Market Reception & Comparison
The 2.0L Optima was generally well-received as a practical and affordable mid-size sedan. Critics praised its comfortable ride, spacious interior, and generous standard features. However, some reviewers noted that the engine lacked the power and refinement of the turbocharged alternatives. Compared to the 1.6L Turbo or 2.4L Turbo models, the 2.0L offered lower performance but better fuel economy. It was often seen as a good value proposition for buyers prioritizing fuel efficiency and affordability over outright performance. Reliability reports generally indicated good dependability for the 2.0L engine and automatic transmission combination.
Legacy
The Kia Optima IV 2.0L CVVL automatic has proven to be a relatively reliable powertrain in the used car market. The Nu engine family, while not without its minor issues (such as potential for oil consumption in some cases), is generally considered durable and long-lasting. The six-speed automatic transmission is also known for its dependability. Today, these Optimas represent an affordable and practical option for buyers seeking a comfortable and well-equipped mid-size sedan. Their relatively low maintenance costs and good fuel economy continue to make them an attractive choice in the used car segment.


